US AIRWAYS GROUP, INC. 19,000,000 SHARES OF COMMON STOCK UNDERWRITING AGREEMENT

Exhibit 1.1

EXECUTION VERSION

US AIRWAYS GROUP, INC.

19,000,000 SHARES OF COMMON STOCK

UNDERWRITING AGREEMENT

August 14, 2008

Xxxxxxx Xxxxx & Co.
Xxxxxxx Lynch, Pierce, Xxxxxx & Xxxxx
Incorporated
As Underwriter

x/x Xxxxxxx Xxxxx & Xx.
Xxxxxxx Lynch, Pierce, Xxxxxx & Xxxxx
Incorporated
0 Xxxxx Xxxxxxxxx Xxxxxx
Xxx Xxxx, Xxx Xxxx 00000

Ladies and Gentlemen:

US Airways Group, Inc., a Delaware corporation (the “Company”), proposes to issue and sell to Xxxxxxx Xxxxx & Co., Xxxxxxx Lynch, Pierce, Xxxxxx & Xxxxx Incorporated (the “Underwriter”) the 19,000,000 shares of its common stock, par value $0.01 per share (the “Firm Shares”). The Company also proposes to issue and sell to the Underwriter not more than 2,850,000 additional shares of its common stock, par value $0.01 per share (the “Additional Shares”), if and to the extent that the Underwriter shall have determined to exercise the right to purchase such shares of common stock granted to the Underwriter in Section 2 hereof. The Firm Shares and the Additional Shares are hereinafter collectively referred to as the “Shares.” The shares of common stock, par value $0.01 per share of the Company to be outstanding after giving effect to the sales contemplated hereby are hereinafter referred to as the “Common Stock.”

The Company has filed with the Securities and Exchange Commission (the “Commission”) a registration statement, including a prospectus, (the file number of which is set forth in Schedule II hereto) on Form S-3, relating to the securities (the “Shelf Securities”), including the Shares, to be issued from time to time by the Company. The registration statement as amended to the date of this Agreement, including the information (if any) deemed to be part of the registration statement at the time of effectiveness pursuant to Rule 430A or Rule 430 B under the Securities Act of 1933, as amended (the “Securities Act”), is hereinafter referred to as the “Registration Statement”, and the related prospectus covering the Shelf Securities dated October 4, 2006 in the form first used to confirm sales of the Shares (or in the form first made available to the Underwriter by the Company to meet requests of purchasers pursuant to Rule 173 under the Securities Act) is hereinafter referred to as the “Base Prospectus.” The Base Prospectus, as supplemented by the prospectus supplement specifically relating to the Shares in the form first used to confirm sales of the Shares (or in the form first made available to the Underwriter by the Company to meet requests of purchasers pursuant to Rule 173 under the Securities Act) is hereinafter referred to as the “Prospectus,” and the term “preliminary prospectus” means any preliminary form of the Prospectus.

For purposes of this Agreement, “free writing prospectus” has the meaning set forth in Rule 405 under the Securities Act, “Time of Sale Prospectus” means the preliminary prospectus, together with the free writing prospectuses, if any, and the final offering terms, each included in Schedule I hereto, and “broadly available road show” means a “bona fide electronic road show” as defined in Rule 433(h)(5) under the Securities Act that has been made available without restriction to any person. As used herein, the terms “Registration Statement,” “Base Prospectus,” “preliminary prospectus,” “Time of Sale Prospectus” and “Prospectus” shall include the documents, if any, incorporated by reference therein. The terms “supplement,” “amendment,” and “amend” as used herein with respect to the Registration Statement, the Base Prospectus, the Time of Sale Prospectus, and any preliminary prospectus or free writing prospectus shall include all documents subsequently filed by the Company with the Commission pursuant to the Securities Exchange Act of 1934, as amended (the “Exchange Act”), that are deemed to be incorporated by reference therein.

1. Representations and Warranties. The Company represents and warrants to, and agrees with, the Underwriter that:

(a) The Company meets the requirements for the use of Form S-3 under the Securities Act; the Registration Statement has become effective; no stop order suspending the effectiveness of the Registration Statement is in effect, and no proceedings for such purpose are pending before or, to the Company’s knowledge, threatened by the Commission. The Registration Statement is an automatic shelf registration statement (as defined in Rule 405 under the Securities Act), the Company is a well-known seasoned issuer (as defined in Rule 405 under the Securities Act) eligible to use the Registration Statement as an automatic shelf registration statement and the Company has not received notice that the Commission objects to the use of the Registration Statement as an automatic shelf registration statement.

(i) Each document, if any, filed or to be filed pursuant to the Exchange Act and incorporated by reference in the Time of Sale Prospectus or the Prospectus complied, or will comply when so filed, in all material respects with the Exchange Act and the applicable rules and regulations of the Commission thereunder, (ii) each part of the Registration Statement, when such part became effective, did not contain, and each such part, as amended or supplemented, if applicable, will not contain any untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary to make the statements therein not misleading, (iii) the Registration Statement as of the date hereof does not contain any untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary to make the statements therein not misleading, (iv) the Registration Statement and the Prospectus comply as to form, and as amended or supplemented, if applicable, will comply as to form, in all material respects with the Securities Act and the applicable rules and regulations of the Commission thereunder, (v) the Time of Sale Prospectus does not, and at the time of each sale of the Shares in connection with the offering when the Prospectus is not yet available to prospective purchasers and at the Closing Date (as defined in Section 4), the Time of Sale

Prospectus, as then amended or supplemented by the Company, if applicable, will not, contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading, (vi) each broadly available road show, if any, when considered together with the Time of Sale Prospectus, does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading and (vii) the Prospectus, as of the date hereof, does not contain and as amended or supplemented, if applicable, at the Closing Date (as defined in Section 4) will not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading, except that the representations and warranties set forth in this paragraph do not apply to statements or omissions in the Registration Statement, the Time of Sale Prospectus or the Prospectus, based upon information relating to the Underwriter furnished to the Company in writing by the Underwriter expressly for use therein.

(b) The Company is not an “ineligible issuer” in connection with the offering pursuant to Rules 164, 405 and 433 under the Securities Act. Any free writing prospectus that the Company is required to file pursuant to Rule 433(d) under the Securities Act has been, or will be, filed with the Commission in accordance with the requirements of the Securities Act and the applicable rules and regulations of the Commission thereunder. Each free writing prospectus that the Company has filed, or is required to file, pursuant to Rule 433(d) under the Securities Act or that was prepared by or on behalf of or used or referred to by the Company complies or will comply in all material respects with the requirements of the Securities Act and the applicable rules and regulations of the Commission thereunder. Except for the free writing prospectuses, if any, identified in Schedule I hereto forming part of the Time of Sale Prospectus, and electronic road shows, if any, each furnished to the Underwriter before first use, the Company has not prepared, used or referred to, and will not, without the prior consent of the Underwriter, prepare, use or refer to, any free writing prospectus.

(c) The Company has been duly incorporated, is validly existing as a corporation in good standing under the laws of the State of Delaware, has the corporate power and authority to own its property and to conduct its business as described in the Time of Sale Prospectus and the Prospectus and is duly qualified to transact business and is in good standing in each jurisdiction in which the conduct of its business or its ownership or leasing of property requires such qualification, except to the extent that the failure to be so qualified or be in good standing would not have a material adverse effect on the Company and its subsidiaries, taken as a whole.

(d) Each subsidiary of the Company has been duly incorporated or organized, is validly existing as a corporation or limited liability company, as the case may be, in good standing under the laws of the jurisdiction of its incorporation or organization, has the corporate or other power and authority to own its property and to conduct its business as described in the Time of Sale Prospectus and the Prospectus and is duly qualified to transact business and is in good standing in each jurisdiction in which the conduct of its business or its ownership or leasing of property requires such qualification, except to the

extent that the failure to be so duly incorporated, organized or qualified or be in good standing would not have a material adverse effect on the Company and its subsidiaries, taken as a whole; all of the issued shares of capital stock or membership interests, as the case may be, of each subsidiary of the Company have been duly and validly authorized and issued, are fully paid and non-assessable and are owned directly or indirectly by the Company, free and clear of all liens, encumbrances, equities or claims.

(e) This Agreement has been duly authorized, executed and delivered by the Company.

(f) The authorized capital stock of the Company conforms in all material respects as to legal matters to the description thereof contained in each of the Time of Sale Prospectus and the Prospectus.

(g) The shares of Common Stock outstanding prior to the issuance of the Shares have been duly authorized and are validly issued, fully paid and non-assessable.

(h) The Shares have been duly authorized and, when issued and delivered in accordance with the terms of this Agreement, will be validly issued, fully paid and non-assessable, and the issuance of such Shares will not be subject to any preemptive or similar rights.

(i) The execution and delivery by the Company of, and the performance by the Company of its obligations under, this Agreement will not contravene any provision of applicable law or the certificate of incorporation or by-laws of the Company or any agreement or other instrument binding upon the Company or any of its subsidiaries that is material to the Company and its subsidiaries, taken as a whole, or any final judgment, order or decree of any governmental body, agency or court having jurisdiction over the Company or any subsidiary, and no consent, approval, authorization or order of, or qualification with, any governmental body or agency is required for the performance by the Company of its obligations under this Agreement, except such as may be required by the securities or Blue Sky laws of the various states in connection with the offer and sale of the Shares

(j) There has not occurred any material adverse change, or any development reasonably likely to involve a material adverse change, in the condition, financial or otherwise, or in the earnings, business or operations of the Company and its subsidiaries, taken as a whole, from that set forth in the Time of Sale Prospectus.

(k) There are no legal or governmental proceedings pending or, to the Company’s knowledge, threatened to which the Company or any of its subsidiaries is a party or to which any of the properties of the Company or any of its subsidiaries is subject (i) other than proceedings accurately described in all material respects in the Time of Sale Prospectus and proceedings that would not have a material adverse effect on the Company and its subsidiaries, taken as a whole, or on the power or ability of the Company to perform its obligations under this Agreement or to consummate the transactions contemplated by the Time of Sale Prospectus or (ii) that are required to be

described in the Registration Statement or the Prospectus and are not so described; and there are no statutes, regulations, contracts or other documents that are required to be described in the Registration Statement or the Prospectus or to be filed as exhibits to the Registration Statement that are not described or filed as required.

(l) Each preliminary prospectus filed as part of the Registration Statement as originally filed or as part of any amendment thereto, or filed pursuant to Rule 424 under the Securities Act, complied when so filed in all material respects with the Securities Act and the applicable rules and regulations of the Commission thereunder.

(m) The Company is not, and after giving effect to the offering and sale of the Shares and the application of the proceeds thereof as described in the Time of Sale Prospectus and the Prospectus, will not be required to register as an “investment company” as such term is defined in the Investment Company Act of 1940, as amended.

(n) The Company and its subsidiaries (i) are in compliance with any and all applicable foreign, federal, state and local laws and regulations relating to the protection of human health and safety, the environment or hazardous or toxic substances or wastes, pollutants or contaminants (“Environmental Laws”), (ii) have received all permits, licenses or other approvals required of them under applicable Environmental Laws to conduct their respective businesses and (iii) are in compliance with all terms and conditions of any such permit, license or approval, except where such noncompliance with Environmental Laws, failure to receive required permits, licenses or other approvals or failure to comply with the terms and conditions of such permits, licenses or approvals would not, singly or in the aggregate, have a material adverse effect on the Company and its subsidiaries, taken as a whole.

(o) There are no costs or liabilities associated with Environmental Laws (including, without limitation, any capital or operating expenditures required for clean-up, closure of properties or compliance with Environmental Laws or any permit, license or approval, any related constraints on operating activities and any potential liabilities to third parties) which would, singly or in the aggregate, have a material adverse effect on the Company and its subsidiaries, taken as a whole.

(p) There are no contracts, agreements or understandings between the Company and any person granting such person the right to require the Company to file a registration statement under the Securities Act with respect to any securities of the Company or to require the Company to include such securities with the Shares registered pursuant to the Registration Statement.

(q) The consolidated financial statements included or incorporated by reference in the Registration Statement and the Time of Sale Prospectus present fairly the consolidated financial position of the Company and its consolidated subsidiaries as of the dates indicated and the consolidated results of operations and cash flows or changes in financial position of the Company and its consolidated subsidiaries for the periods specified. Except as stated therein, such financial statements have been prepared in conformity with generally accepted accounting principles applied on a consistent basis

throughout the periods involved. The financial statement schedules, if any, included or incorporated by reference in the Registration Statement and the Time of Sale Prospectus present fairly the information required to be stated therein. The summary consolidated financial data included in the Time of Sale Prospectus present fairly the information shown therein in all material respects and have been compiled on a basis consistent with that of the audited consolidated financial statements included or incorporated by reference in the Registration Statement.

(r) Subsequent to the respective dates as of which information is given in the Registration Statement and the Time of Sale Prospectus, (i) neither the Company nor any of its subsidiaries has incurred any material liability or obligation, direct or contingent, or entered into any material transaction, in each case, not in the ordinary course of business or as described in, contemplated by or incorporated by reference into the Time of Sale Prospectus and the Prospectus (including, without limitation, aircraft acquisitions or financing and equity incentive plan grants so described in or contemplated by the Time of Sale Prospectus and the Prospectus); (ii) the Company has not purchased any of its outstanding capital stock, nor declared, paid or otherwise made any dividend or distribution of any kind on its capital stock (other than repurchases of unvested shares of the Company’s capital stock pursuant to its equity incentive plans); (iii) there has not been any material change in the capital stock, short-term debt or long-term debt of the Company except in each case as described in, contemplated by or incorporated by reference into the Time of Sale Prospectus and the Prospectus (including, without limitation, aircraft financing and equity incentive plan grants so described in, contemplated by or incorporated by reference into the Time of Sale Prospectus and the Prospectus); and (iv) there has been no prohibition or suspension of the Company’s operating certificate for the operation of the Company’s aircraft, including as a result of action taken by the Federal Aviation Administration (“FAA”) or the Department of Transportation.

(s) Each of the Company and its subsidiaries has good and marketable title in fee simple to all real property and good and marketable title to all personal property owned by it which is material to the business of the Company and its subsidiaries, in each case free and clear of all liens, encumbrances and defects, except liens on real property, aircraft and engines, parts, rotables, and other equipment of the Company and such as are described in or incorporated by reference into the Time of Sale Prospectus or such as do not materially affect the value of such property or do not interfere with the use made and proposed to be made of such property by the Company or its subsidiaries, as the case may be; and any real property and buildings held under lease by the Company or any of its subsidiaries are held by it under valid, subsisting and enforceable leases with such exceptions as are not material and do not interfere with the use made and proposed to be made of such property and buildings by the Company or its subsidiaries, in each case except as described in or contemplated by the Time of Sale Prospectus and the Prospectus.

(t) (i) Each of the Company and its subsidiaries possesses such permits, licenses, approvals, consents and other authorizations (collectively, “Government Licenses”) issued by the appropriate federal, state, local or foreign regulatory agencies or bodies, including the Department of Transportation, the FAA or the Federal Communications Commission necessary to conduct the business now operated by it, except where the failure to possess any such Government License would not, singly or in the aggregate, have a material adverse effect on the Company and its subsidiaries, taken as a whole; (ii) each of the Company and its subsidiaries is in compliance with the terms and conditions of all such Governmental Licenses, except where the failure so to comply would not, singly or in the aggregate, have a material adverse effect on the Company and its subsidiaries, taken as a whole; (iii) all of the Government Licenses are valid and in full force, except where the invalidity of such Governmental Licenses or the failure of such Governmental Licenses to be in full force and effect would not, singly or in the aggregate, have a material adverse effect on the Company and its subsidiaries, taken as a whole; and (iv) the Company has not received any notice of proceedings relating to the revocation or modification of any such Governmental Licenses which, singly or in the aggregate, is reasonably likely to have a material adverse effect on the Company and its subsidiaries, taken as a whole.

(u) Except as described in or contemplated by the Time of Sale Prospectus and the Prospectus, no material labor dispute with the employees of the Company or its subsidiaries exists or, to the knowledge of the Company, is imminent; and the Company is not aware, but without any independent investigation or inquiry, of any existing, threatened or imminent labor disturbance by the employees of any of its principal suppliers, manufacturers or contractors that could reasonably likely result in any material adverse change in the condition, financial or otherwise, or in the earnings, business or operations of the Company and its subsidiaries, taken as a whole.

(v) Each of the Company and its subsidiaries is insured by insurers of recognized financial responsibility against such losses and risks and in such amounts as are customary in the businesses in which it is engaged; provided, that the Company currently maintains war risk insurance on its aircraft under the FAA’s insurance program authorized under 49 U.S.C. § 44301 et seq. (“War Risk Insurance”); each of the Company and its subsidiaries has not been refused any insurance coverage sought or applied other than in connection with instances where the Company was seeking to obtain insurance coverage at more attractive rates; and, other than with respect to War Risk Insurance coverage, the Company has no reason to believe that it will not be able to renew its existing insurance coverage as and when such coverage expires or to obtain similar coverage from similar insurers as may be necessary to continue its business at a cost that would not have a material adverse effect on the Company and its subsidiaries, taken as a whole, except as described in or contemplated by the Time of Sale Prospectus and the Prospectus.

(w) The Company maintains a system of internal accounting controls sufficient to provide reasonable assurance that (i) transactions are executed in accordance with management’s general or specific authorizations in all material respects and (ii) transactions are recorded as necessary to permit preparation of financial statements in conformity with generally accepted accounting principles and to maintain asset accountability.

(x) US Airways, Inc. (i) is an “air carrier” within the meaning of 49 U.S.C. Section 40102(a); (ii) holds an air carrier operating certificate issued by the Secretary of Transportation pursuant to Chapter 447 of Title 49 of the United States Code for aircraft capable of carrying 10 or more individuals or 6,000 pounds or more of cargo; and (iii) is a “citizen of the United States” as defined in 49 U.S.C. Section 401102.

(y) KMPG LLP, who reported on the annual consolidated financial statements of the Company incorporated by reference in the Registration Statement and the Prospectus, is an independent registered public accounting firm as required by the Securities Act.

(z) Neither the Company nor any of its subsidiaries or affiliates, nor, to the Company’s knowledge, any director, officer, or employee, any agent or representative of the Company or of any of its subsidiaries or affiliates, has taken any action in furtherance of an offer, payment, promise to pay, or authorization or approval of the payment or giving of money, property, gifts or anything else of value, directly or indirectly, to any “government official” (including any officer or employee of a government or government-owned or controlled entity or of a public international organization, or any person acting in an official capacity for or on behalf of any of the foregoing, or any political party or party official or candidate for political office) to influence official action or secure an improper advantage; and the Company and its subsidiaries and affiliates have conducted their businesses in compliance with applicable anti-corruption laws, including the Foreign Corrupt Practices Act of 1977, as amended, and the rules and regulations thereunder, and have instituted and maintain and will continue to maintain policies and procedures designed to promote and achieve compliance with such laws and with the representation and warranty contained herein.

(aa) The operations of the Company and its subsidiaries are and have been conducted in material compliance with all applicable financial recordkeeping and reporting requirements, including those of the Bank Secrecy Act, as amended by Title III of the Uniting and Strengthening America by Providing Appropriate Tools Required to Intercept and Obstruct Terrorism Act of 2001 (USA PATRIOT Act), and the applicable anti-money laundering statutes of jurisdictions where the Company and its subsidiaries conduct business, the rules and regulations thereunder and any related or similar rules, regulations or guidelines, issued, administered or enforced by any governmental agency (collectively, the “Anti-Money Laundering Laws”), and no action, suit or proceeding by or before any court or governmental agency, authority or body or any arbitrator involving the Company or any of its subsidiaries with respect to the Anti-Money Laundering Laws is pending or, to the knowledge of the Company, threatened.

(bb) (i) The Company represents that neither the Company nor any of its subsidiaries (collectively, the “Entity”) or, to the knowledge of the Entity, any director or officer of the Entity, is an individual or entity (“Person”) that is, or is owned or controlled by a Person that is:

(A) the subject of any sanctions administered or enforced by the U.S. Department of Treasury’s Office of Foreign Assets Control (“OFAC”), the United Nations Security Council (“UNSC”), the European Union (“EU”), Her Majesty’s Treasury (“HMT”) or other relevant sanctions authorities (collectively, “Sanctions”), nor

(B) located, organized or resident in a country or territory that is the subject of Sanctions (including, without limitation, Burma/Myanmar, Cuba, Iran, North Korea, Sudan or Syria).

(ii) The Entity represents and covenants that it will not, directly or indirectly, use the proceeds of the offering, or lend, contribute or otherwise make available such proceeds to any subsidiary, joint venture partner or other Person:

(A) to fund or facilitate any activities or business of or with any Person or in any country or territory that, at the time of such funding or facilitation, is the subject of Sanctions; or

(B) in any other manner that will result in a violation of Sanctions by any Person (including any Person participating in the offering, whether as underwriter, advisor, investor or otherwise).

(iii) The Entity represents and covenants that, for the past four years, it has not engaged in, is not now engaged in, and will not engage in, any dealings or transactions with any Person, or in any country or territory, that at the time of the dealing or transaction is or was the subject of Sanctions.

(cc) The Company and its subsidiaries’ internal controls over financial reporting are effective and the Company and its subsidiaries are not aware of any material weakness in their internal controls over financial reporting.

(dd) The Company and its subsidiaries maintain “disclosure controls and procedures” (as such term is defined in Rule 13a-15(e) under the Exchange Act); such disclosure controls and procedures are effective.

2. Agreements to Sell and Purchase. The Company hereby agrees to sell to the Underwriter, and the Underwriter, upon the basis of the representations and warranties herein contained, but subject to the conditions hereinafter stated, agrees to purchase from the Company the number of Firm Shares set forth in Schedule I hereto at the purchase price set forth in Schedule II hereto (the “Purchase Price”).

On the basis of the representations and warranties contained in this Agreement, and subject to its terms and conditions, the Company agrees to sell to the Underwriter the Additional Shares, and the Underwriter shall have the right to purchase up to the number of Additional Shares set forth in Schedule I hereto at the Purchase Price. The Underwriter may exercise this right in whole or from time to time in part by giving written notice to the Company not later than 30 days after the date of the Prospectus. Any exercise notice shall specify the number of Additional Shares to be purchased by the Underwriter and the date on which such Shares are to be purchased. Each purchase date must be at least one business day after the written notice is given and may not be earlier than the closing date for the Firm Shares nor later

than ten business days after the date of such notice. Additional Shares may be purchased as provided in Section 4 hereof solely for the purpose of covering over-allotments made in connection with the offering of the Firm Shares. On each day, if any, that Additional Shares are to be purchased (an “Option Closing Date”), the Underwriter agrees to purchase the total number of Additional Shares to be purchased on such Option Closing Date.

3. Public Offering. The Company is advised by the Underwriter that the Underwriter proposes to make a public offering of the Shares (the “Public Offering”), as soon after this Agreement has become effective as in the judgment of the Underwriter is advisable. The Company is further advised by the Underwriter that the Shares are to be offered to the public upon the terms set forth in the Prospectus.

4. Payment and Delivery. Payment for the Firm Shares, against delivery of the Firm Shares, shall be made to the Company in Federal or other funds immediately available in New York City on the closing date and time set forth in Schedule II hereto, or at such other time on the same or such other date, not later than the fifth business day thereafter, as may be designated in writing by the Underwriter. The time and date of such payment are hereinafter referred to as the “Closing Date.”

Payment for any Additional Shares, against delivery of such Additional Shares, shall be made to the Company in Federal or other funds immediately available in New York City on the date specified in the corresponding notice described in Section 2 or at such other time on the same or on such other date, in any event not later than the tenth business day thereafter, as may be designated in writing by the Underwriter.

The documents to be delivered on any Closing Date on behalf of the parties hereto pursuant to Section 5 of this Agreement shall be delivered to the offices of Xxxxxx Xxxxxxxx Xxxxx & Xxxxxxxx LLP at the address specified in Schedule II hereto, and the Shares shall be delivered, all on the applicable Closing Date. The Firm Shares and the Additional Shares shall be in definitive form or global form, as specified by the Underwriter, and registered in such names and in such denominations as the Underwriter shall request in writing not later than one full business day prior to the Closing Date or the applicable Option Closing Date, as the case may be, for the account of the Underwriter, with any transfer taxes payable in connection with the transfer of the Shares to the Underwriter duly paid, against payment of the Purchase Price therefor.

5. Conditions to the Underwriter’s Obligations. The obligations of the Underwriter herein are subject to the following conditions:

(a) Subsequent to the execution and delivery of this Agreement and prior to the Closing Date:

(i) there shall not have occurred any downgrading, nor shall any notice have been given of any intended or potential downgrading or of any review for a possible change that does not indicate the direction of the possible change, in the rating accorded any of the securities of the Company or any of its subsidiaries or in the rating outlook for the Company by any “nationally recognized statistical rating organization,” as such term is defined for purposes of Rule 436(g)(2) under the Securities Act; and

(ii) there shall not have occurred any change, or any development reasonably likely to involve a change, in the condition, financial or otherwise, or in the earnings, business or operations of the Company and its subsidiaries, taken as a whole, from that set forth in the Time of Sale Prospectus as of the date of this Agreement that, in the Underwriter’s judgment, is material and adverse and that makes it, in the Underwriter’s judgment, impracticable to market the Shares on the terms and in the manner contemplated in the Time of Sale Prospectus.

(b) The Underwriter shall have received on the Closing Date a certificate, dated the Closing Date and signed by an executive officer of the Company, to the effect set forth in Section 5(a)(i) above and to the effect that: (i) the representations and warranties of the Company contained in this Agreement are true and correct as of the Closing Date, and (ii) the Company has complied in all material respects with all of the agreements and satisfied in all material respects all of the conditions on its part to be performed or satisfied hereunder on or before the Closing Date. The officer signing and delivering such certificate may rely upon the best of his or her knowledge as to proceedings threatened.

(c) The Underwriter shall have received on the Closing Date an opinion of XxXxxxx Long & Xxxxxxxx LLP, outside counsel for the Company, dated the Closing Date, to the effect that:

(i) the Company is a corporation, and, based solely on a certificate from the Secretary of State of Delaware, is validly existing and in good standing, under the laws of the State of Delaware, and has the corporate power and authority to own its property and to conduct its business as described in the Time of Sale Prospectus and the Prospectus;

(ii) based solely on an examination of the Certificate of Incorporation, Bylaws and corporate minute book of the Company and a certificate from the authorized officers of the Company, the shares of Common Stock outstanding prior to the issuance of the Shares have been duly authorized and are validly issued, fully paid and non assessable;

(iii) the Shares have been duly authorized and, when issued and delivered in accordance with the terms of this Agreement, will be validly issued, fully paid and non assessable, and the issuance of such Shares will not be subject to any preemptive rights under the Delaware General Corporation Law, the Company’s Certificate of Incorporation or Bylaws or any Material Written Agreement;

(iv) this Agreement has been duly authorized, executed and delivered by the Company;

(v) the execution and delivery by the Company of this Agreement do not, and if the Company were now to perform its obligations under this Agreement, such performance would not (except as may be required by the securities or “blue sky” laws of the various states or from the NASD, Inc. in connection with the offer and sale of the Shares), result in any: (i) violation of the Company’s Certificate of Incorporation or Bylaws; (ii) violation of any existing federal statute, order, or law to which the Company is subject which either prohibit performance by the Company of its obligations under this Agreement or subject the Company to a fine, penalty, or other similar sanction; (iii) breach of or default under any Material Written Agreement to which the Company is a party or by which the Company or its assets are bound; or (iv) violation of any judicial or administrative decree, writ, judgment or order to which, to our knowledge, the Company or its assets are subject.

Such counsel shall assume that the term “Material Written Agreements” used in clause (iii) and clause (v)(iii) above includes only those agreements filed by the Company pursuant to Item 601(a)(10) of Regulation S-K in the Company’s (a) Annual Report on Form 10-K for the year ended December 31, 2007, filed on February 21, 2008, (b) Quarterly Report on Form 10-Q for the quarter ended March 31, 2008, filed on April 24, 2008, and (c) Quarterly Report on Form 10-Q for the quarter ended June 30, 2008, filed on July 25, 2008 (such agreements shall be listed on a schedule to such counsel’s opinion letter);

(vi) no consent, approval, authorization or order of, or filing with, any governmental authority of the United States (collectively, “Consents”) is required for the Company’s execution and delivery of this Agreement and consummation of the transaction contemplated hereby, except as may be required by the applicable securities or “blue sky” laws of the various states or from the NASD, Inc. in connection with the purchase, offer and sale of the Shares;

(vii) the statements relating to legal matters, documents or proceedings included in the Time of Sale Prospectus and the Prospectus under the caption “Description of Capital Stock” fairly summarize in all material respects the matters described therein;

(viii) the Company is not, and after giving effect to the offering and sale of the Shares and the application of the proceeds thereof as described in the Time of Sale Prospectus and the Prospectus under the caption “Use of Proceeds” will not be, required to register as an “investment company” as such term is defined in the Investment Company Act of 1940, as amended; and

(ix) nothing has come to such counsel’s attention that causes such counsel to believe that (1) each document filed pursuant to the Exchange Act and incorporated by reference in the Registration Statement, the Time of Sale Prospectus or the Prospectus (except for the financial statements and financial schedules and other financial and accounting information and statistical data included therein as to which such counsel need not express any opinion) did not

comply as to form in all material respects, as of its filing date, with the requirements of the Exchange Act and the applicable rules and regulations of the Commission thereunder, or (2) the Registration Statement, the Time of Sale Prospectus or the Prospectus (except for the financial statements and financial schedules and other financial and accounting information and statistical data included therein as to which such counsel need not express any opinion) do not on their face comply as to form in all material respects with the requirements of the Securities Act and the applicable rules and regulations of the Commission thereunder.

In addition, the opinion shall include a confirmation by such counsel that without independent investigation or verification and without assumption of any responsibility for the factual accuracy or completeness of statements or materials contained in the Registration Statement, the Time of Sale Prospectus or the Prospectus, nothing has come to such counsel’s attention to cause such counsel to believe that (a) any part of the Registration Statement, at the time such part became effective (except for the financial statements and financial schedules and other financial and accounting information and statistical data included therein as to which such counsel need not express any opinion or belief), contained any untrue statement of a material fact or omitted to state a material fact required to be stated therein or necessary to make the statements therein not misleading, (b) the Time of Sale Prospectus (except for the financial statements and financial schedules and other financial and accounting information and statistical data included therein as to which such counsel need not express any opinion or belief), as of the date of this Agreement, contained any untrue statement of a material fact or omitted to state a material fact required to be stated therein, in light of the circumstances under which they were made, or necessary to make the statements therein not misleading, or (c) the Prospectus, as of the date thereof or of the closing date (except for the financial statements and financial schedules and other financial and accounting information and statistical data included therein as to which such counsel need not express any opinion or belief), included any untrue statement of a material fact or omitted to state a material fact necessary in order to make the statements contained therein, in light of the circumstances under which they were made, not misleading.

(d) The Underwriter shall have received on the Closing Date an opinion of Xxxxx Xxxxxxx, Senior Vice President and General Counsel of the Company, dated the Closing Date, to the effect that:

(i) the Company is a corporation and is validly existing and in good standing under the laws of the State of Delaware and has the corporate power and authority to own its property and to conduct its business as described in the Time of Sale Prospectus and the Prospectus. The Company is duly qualified to transact business and is in good standing in each jurisdiction in which the conduct of its business or its ownership or leasing of property requires such qualification, except to the extent that the failure to be so qualified or be in good standing would not have a material adverse effect on the Company and its subsidiaries, taken as a whole;

(ii) each subsidiary of the Company is a corporation or limited liability company, as the case may be, and is validly existing and in good standing under the laws of the jurisdiction of its incorporation or organization, as applicable, and has the corporate or limited liability company, as applicable, power and authority to own its property and to conduct its business as described in the Time of Sale Prospectus and the Prospectus. Each subsidiary of the Company is duly qualified to transact business and is in good standing in each jurisdiction in which the conduct of its business or its ownership or leasing of property requires such qualification, except to the extent that the failure to be so qualified or be in good standing would not have a material adverse effect on the Company and its subsidiaries, taken as a whole;

(iii) all of the issued shares of Common Stock of the Company have been duly authorized and are validly issued, fully paid and non-assessable, and free and clear of all liens, encumbrances, equities or claims;

(iv) all of the issued shares of capital stock or membership interests, as the case may be, of each subsidiary of the Company have been duly authorized and are validly issued, fully paid and non-assessable, and free and clear of all liens, encumbrances, equities or claims;

(v) (A) the Company possesses the Government Licenses necessary to conduct the business now operated by it as described in the Time of Sale Prospectus and the Prospectus, except where the failure to so comply would not, singly or in the aggregate, have a material adverse effect on the Company; (B) the Company is in compliance with the terms and conditions of all such Government Licenses, except where the failure to so comply would not, singly or in the aggregate, have a material adverse effect on the Company; and (C) all of the Government Licenses are valid and in full force and effect, except where the invalidity of such Government Licenses or the failure of such Government Licenses to be in full force and effect would not, singly or in the aggregate, have a material adverse effect on the Company;

(vi) The statements incorporated by reference in the Time of Sale Prospectus and the Prospectus from the Company’s 2007 Annual Report on Form 10-K, as amended, under the caption “Business — Industry Regulation and Airport Access”, insofar as such statements constitute summaries of legal or regulatory matters, documents or proceedings referred to therein, fairly summarize in all material respects the matters referred to therein.

(vii) US Airways, Inc. is an “air carrier” and a “citizen of the United States” within the meaning of that portion of the United States Code comprising those provisions formerly referred to as the Federal Aviation Act of 1958, and now primarily codified in Title 49 of the United States Code, as amended, and holds an “air carrier operating certificate issued by the Secretary of Transportation” within the meaning of 11 U.S.C. Section 1110. The statements in the Time of Sale Prospectus and the Prospectus as to the routes which the Company presently operates or is authorized to operate are correct in all material respects and such routes presently operated are being operated pursuant to valid certificates or authorizations issued by the Federal Aviation Authority.

In addition, the opinion shall include a confirmation that, to her knowledge after due inquiry, other than proceedings fairly summarized in all material respects in the Time of Sale Prospectus and the Prospectus and proceedings that are not required to be described in the Time of Sale Prospectus and the Prospectus, no material litigation, mediation, arbitration, other alternative dispute resolution proceeding, or adversarial or sanction-oriented investigation or proceeding before any court or governmental agency or any self-regulatory organization, against the Company or any of its properties or any of its subsidiaries is pending or overtly threatened by a written communication to the Company or any of its subsidiaries.

(e) The Underwriter shall have received on the Closing Date an opinion of Xxxxxx Xxxxxxxx Xxxxx & Xxxxxxxx LLP, counsel for the Underwriter, dated the Closing Date, covering the matters referred to in Sections 5(c)(iii), 5(c)(iv), 5(c)(vii) (but as to the statements under “Underwriting” in each of the Time of Sale Prospectus and the Prospectus instead of the statements under “Description of Capital Stock” ) and the paragraph immediately following clause 5(c)(ix) above.

With respect to the paragraph immediately following Section 5(c)(ix) above, counsel for the Company may state that their opinions and beliefs are based upon their participation in the preparation of the Registration Statement, the Time of Sale Prospectus, the Prospectus, any free writing prospectuses identified as part of the Time of Sale Prospectus in Schedule I hereto, and any amendments or supplements thereto (other than the documents incorporated by reference) and review and discussion of the contents of the Registration Statement, the Time of Sale Prospectus and the Prospectus (including documents incorporated by reference), but are without independent check or verification, except as specified. With respect to the paragraph immediately following clauses 5(c)(ix) above, Xxxxxx Xxxxxxxx Xxxxx & Xxxxxxxx LLP may state that their opinions and beliefs are based upon their participation in the preparation of the Registration Statement, the Time of Sale Prospectus, the Prospectus, any free writing prospectuses identified as part of the Time of Sale Prospectus in Schedule I hereto, and any amendments or supplements thereto (other than the documents incorporated by reference) and upon review and discussion of the contents of the Registration Statement, the Time of Sale Prospectus and the Prospectus (including documents incorporated by reference), but are without independent check or verification, except as specified. The opinion of counsel for the Company described in Section 5(c) above shall be rendered to the Underwriter at the request of the Company and shall so state therein.

(f) The Underwriter shall have received, on each of the date hereof and the Closing Date, a letter dated the date hereof or the Closing Date, as the case may be, in form and substance satisfactory to the Underwriter, from KPMG LLP, independent public accountants, containing statements and information of the type ordinarily included in accountants’ “comfort letters” to underwriters with respect to the financial statements and certain financial information contained in or incorporated by reference into the Registration Statement, the Time of Sale Prospectus and the Prospectus; provided that the letter delivered on the Closing Date shall use a “cut-off date” not earlier than the date hereof.

(g) The “lock-up” agreements, each substantially in the form of Exhibit A hereto, between you and certain officers and directors of the Company relating to sales and certain other dispositions of shares of Common Stock or certain other securities, delivered to you on or before the date hereof, shall be in full force and effect on the Closing Date.

(h) The Underwriter shall have received on the Closing Date a certificate, dated the Closing Date, signed by an executive officer of the Company and in form and substance reasonably satisfactory to the Underwriter, with respect to the accuracy of certain statistical information included or incorporated by reference in the Time of Sale Prospectus and the Prospectus.

6. Covenants of the Company. The Company covenants with the Underwriter as follows:

(a) To furnish to the Underwriter, without charge, a signed copy of the Registration Statement (including exhibits thereto) and to deliver to the Underwriter during the period mentioned in Section 6(e) or 6(f) below, as many copies of the Time of Sale Prospectus, the Prospectus, any documents incorporated by reference therein and any supplements and amendments thereto or to the Registration Statement as the Underwriter may reasonably request.

(b) Before amending or supplementing the Registration Statement, the Time of Sale Prospectus or the Prospectus, to furnish to the Underwriter a copy of each such proposed amendment or supplement and not to file any such proposed amendment or supplement to which the Underwriter reasonably objects; provided that, if in the opinion of counsel to the Company, any such amendment or supplement shall be required by law or regulation to be filed, that the Company shall be permitted to make such filing after taking into account such comments as the Underwriter and its counsel may reasonably make on the content, form or other aspects of such proposed amendment or supplement; and to file with the Commission such amendment or supplement.

(c) To furnish to the Underwriter a copy of each proposed free writing prospectus to be prepared by or on behalf of, used by, or referred to by the Company and not to use or refer to any proposed free writing prospectus to which the Underwriter reasonably objects; provided that, if in the opinion of counsel to the Company, any such free writing prospectus shall be required by law or regulation to be used, that the Company shall be permitted to use such free writing prospectus after taking into account such comments as the Underwriter and its counsel may reasonably make on the content, form or other aspects of such proposed free writing prospectus.

(d) Not to take any action that would result in the Underwriter or the Company being required to file with the Commission pursuant to Rule 433(d) under the Securities Act a free writing prospectus prepared by or on behalf of the Underwriter that the Underwriter otherwise would not have been required to file thereunder.

(e) If the Time of Sale Prospectus is being used to solicit offers to buy the Shares at a time when the Prospectus is not yet available to prospective purchasers and any event shall occur or condition exist as a result of which it is necessary to amend or supplement the Time of Sale Prospectus in order to make the statements therein, in the light of the circumstances, not misleading, or if any event shall occur or condition exist as a result of which the Time of Sale Prospectus conflicts with the information contained in the Registration Statement then on file, or if, in the opinion of counsel for the Underwriter, it is necessary to amend or supplement the Time of Sale Prospectus to comply with applicable law, forthwith to prepare, file with the Commission and furnish, at its own expense, to the Underwriter and to any dealer upon request, either amendments or supplements to the Time of Sale Prospectus so that the statements in the Time of Sale Prospectus as so amended or supplemented will not, in the light of the circumstances when the Time of Sale Prospectus is delivered to a prospective purchaser, be misleading or so that the Time of Sale Prospectus, as amended or supplemented, will no longer conflict with the Registration Statement, or so that the Time of Sale Prospectus, as amended or supplemented, will comply with applicable law.

(f) If, during such period after the first date of the public offering of the Shares as in the opinion of counsel for the Underwriter the Prospectus (or in lieu thereof the notice referred to in Rule 173(a) under the Securities Act) is required by law to be delivered in connection with sales by an Underwriter or dealer, any event shall occur or condition exist as a result of which it is necessary to amend or supplement the Prospectus in order to make the statements therein, in the light of the circumstances when the Prospectus (or in lieu thereof the notice referred to in Rule 173(a) under the Securities Act) is delivered to a purchaser, not misleading, or if, in the opinion of counsel for the Underwriter, it is necessary to amend or supplement the Prospectus to comply with applicable law, the Company shall forthwith prepare, file with the Commission and furnish, at its own expense, to the Underwriter and to the dealers (whose names and addresses the Underwriter will furnish to the Company) to which Shares may have been sold by the Underwriter and to any other dealers upon request, either amendments or supplements to the Prospectus so that the statements in the Prospectus as so amended or supplemented will not, in the light of the circumstances when the Prospectus (or in lieu thereof the notice referred to in Rule 173(a) under the Securities Act) is delivered to a purchaser, be misleading or so that the Prospectus, as amended or supplemented, will comply with applicable law.

(g) During the period when a prospectus relating to the Shares is required to be delivered under the Securities Act and the Securities Act Regulations, to file promptly all documents required to be filed with the Commission pursuant to Section 13 or 14 of the Exchange Act.

(h) To take all reasonable actions to qualify the Shares for offer and sale under the securities or Blue Sky laws of such jurisdictions as the Underwriter shall reasonably request; provided that the Company shall not be required to register as a foreign corporation or file any general consent to service of process or subject itself to any additional taxation.

(i) To make generally available to the Company’s security holders and to the Underwriter as soon as practicable an earning statement covering a period of at least twelve months beginning with the first fiscal quarter of the Company occurring after the date of this Agreement which shall satisfy the provisions of Section 11(a) of the Securities Act and the rules and regulations of the Commission thereunder.

(j) Whether or not the transactions contemplated in this Agreement are consummated or this Agreement is terminated, to pay or cause to be paid all expenses incident to the performance of its obligations under this Agreement, including: (i) the fees, disbursements and expenses of the Company’s counsel and the Company’s accountants in connection with the registration of the Shares under the Securities Act, the issuance, sale and delivery of the Shares and all other fees or expenses in connection with the preparation and filing of the Registration Statement, any preliminary prospectus, the Time of Sale Prospectus, the Prospectus, any free writing prospectus prepared by or on behalf of, used by, or referred to by the Company and amendments and supplements to any of the foregoing, including the filing fees payable to the Commission relating to the Shares (within the time required by Rule 456(b)(1), if applicable), all printing costs associated therewith, and the mailing and delivering of copies thereof to the Underwriter and dealers, in the quantities hereinabove specified, (ii) all costs and expenses related to the transfer and delivery of the Shares to the Underwriter, including any transfer or other taxes payable thereon, (iii) the cost of printing, producing or processing and distributing of the Underwriter’s Questionnaire or any Blue Sky or legal investment memorandum in connection with the offer and sale of the Shares under state securities laws and all expenses in connection with the qualification of the Shares for offer and sale under state securities laws as provided in Section 6(g) hereof, including filing fees and the reasonable fees and disbursements of counsel for the Underwriter in connection with such qualification and in connection with the Blue Sky or legal investment memorandum, (iv) all filing fees and the reasonable fees and disbursements of counsel to the Underwriter incurred in connection with the review and qualification of the offering of the Shares by the Financial Industry Regulatory Authority, Inc., (v) all costs and expenses incident to listing the Shares on The New York Stock Exchange, (vi) the costs and charges of any transfer agent, registrar or depositary, (vii) the costs and expenses of the Company relating to investor presentations on any “road show” undertaken in connection with the marketing of the offering of the Shares, including, without limitation, expenses associated with the preparation or dissemination of any electronic road show, expenses associated with the production of road show slides and graphics, fees and expenses of any consultants engaged in connection with the road show presentations with the prior approval of the Company and travel and lodging expenses of the representatives and officers of the Company and any such consultants as shall be agreed upon separately by the Company and the Underwriter (it being understood that the Underwriter shall be responsible for paying travel and lodging expenses of the Underwriter in connection with the road show and any ground transportation used by the Underwriter in connection with the road show as shall be so separately agreed), (viii) the document production charges and expenses associated with printing this Agreement, and (ix) all other costs and

expenses incident to the performance of the obligations of the Company hereunder for which provision is not otherwise made in this Section. It is understood, however, that except as provided in this Section, Section 8 entitled “Indemnity and Contribution” and the last paragraph of Section 10 below, the Underwriter will pay all of their costs and expenses, including fees and disbursements of their counsel, transfer taxes payable on resale of any of the Shares by them and any advertising expenses connected with any offers they may make.

(k) If the third anniversary of the initial effective date of the Registration Statement occurs before all the Shares have been sold by the Underwriter, prior to the third anniversary to file a new shelf registration statement and to take any other action reasonably necessary to permit the public offering of the Shares to continue without interruption; provided that such requirement to file a new registration statement shall not require the Company to file any registration statement other than on Form S-3 (or any successor form); references herein to the Registration Statement shall include the new registration statement declared effective by the Commission.

The Company also covenants with the Underwriter that, without the prior written consent of the Underwriter, it will not, during the restricted period set forth in Schedule II hereto, (1) offer, pledge, sell, contract to sell, sell any option or contract to purchase, purchase any option or contract to sell, grant any option, right or warrant to purchase, lend, or otherwise transfer or dispose of, directly or indirectly, any shares of Common Stock or any securities convertible into or exercisable or exchangeable for Common Stock or (2) enter into any swap or other arrangement that transfers to another, in whole or in part, any of the economic consequences of ownership of the Common Stock, whether any such transaction described in clause (1) or (2) above is to be settled by delivery of Common Stock or such other securities, in cash or otherwise or (3) file any registration statement with the Commission relating to the offering of any shares of Common Stock or any securities convertible into or exercisable or exchangeable for Common Stock. The foregoing sentence shall not apply to (a) the Shares to be sold hereunder, (b) the issuance of equity securities pursuant to the Company’s 2008 Equity Incentive Plan, (c) the issuance by the Company of shares of Common Stock upon the exercise of an option or warrant or the conversion of a security outstanding on the date hereof of which the Underwriter has been advised in writing, or (d) the establishment of a trading plan pursuant to Rule 10b5-1 under the Exchange Act for the transfer of shares of Common Stock, provided that such plan does not provide for the transfer of Common Stock during such restricted period.

7. Covenants of the Underwriter. The Underwriter severally covenants with the Company not to take any action that would result in the Company being required to file with the Commission under Rule 433(d) a free writing prospectus prepared by or on behalf of such Underwriter that otherwise would not be required to be filed by the Company thereunder, but for the action of that Underwriter. The Underwriter acknowledges and agrees that, except as set forth in Schedule I hereto, the Company has not authorized or approved any “issuer information” for use in any free writing prospectus.

8. Indemnity and Contribution. (a) The Company agrees to indemnify and hold harmless the Underwriter, each person, if any, who controls the Underwriter within the meaning of either Section 15 of the Securities Act or Section 20 of the Exchange Act, and each affiliate of the Underwriter within the meaning of Rule 405 under the Securities Act, from and against any and all losses, claims, damages and liabilities (including, without limitation, any legal or other expenses reasonably incurred in connection with defending or investigating any such action or claim) caused by any untrue statement or alleged untrue statement of a material fact contained in the Registration Statement or any amendment thereof, any preliminary prospectus, the Time of Sale Prospectus, any issuer free writing prospectus as defined in Rule 433(h) under the Securities Act, any Company information that the Company has filed, or is required to file, pursuant to Rule 433(d) under the Securities Act, or the Prospectus or any amendment or supplement thereto, or caused by any omission or alleged omission to state therein a material fact required to be stated therein or necessary to make the statements therein not misleading, except insofar as such losses, claims, damages or liabilities are caused by any such untrue statement or omission or alleged untrue statement or omission based upon information relating to the Underwriter furnished to the Company in writing by the Underwriter expressly for use therein.

(b) The Underwriter agrees, severally and not jointly, to indemnify and hold harmless the Company, its directors, its officers who sign the Registration Statement and each person, if any, who controls the Company within the meaning of either Section 15 of the Securities Act or Section 20 of the Exchange Act to the same extent as the foregoing indemnity from the Company to such Underwriter, but only with reference to information relating to such Underwriter furnished to the Company in writing by the Underwriter expressly for use in the Registration Statement, any preliminary prospectus, the Time of Sale Prospectus, any issuer free writing prospectus or the Prospectus or any amendment or supplement thereto.

(c) In case any proceeding (including any governmental investigation) shall be instituted involving any person in respect of which indemnity may be sought pursuant to Section 8(a) or 8(b), such person (the “indemnified party”) shall promptly notify the person against whom such indemnity may be sought (the “indemnifying party”) in writing and the indemnifying party, upon request of the indemnified party, shall retain counsel reasonably satisfactory to the indemnified party to represent the indemnified party and any others the indemnifying party may designate in such proceeding and shall pay the fees and disbursements of such counsel related to such proceeding. In any such proceeding, any indemnified party shall have the right to retain its own counsel, but the fees and expenses of such counsel shall be at the expense of such indemnified party unless (i) the indemnifying party and the indemnified party shall have mutually agreed to the retention of such counsel or (ii) the named parties to any such proceeding (including any impleaded parties) include both the indemnifying party and the indemnified party and representation of both parties by the same counsel would be inappropriate due to actual or potential differing interests between them. It is understood that the indemnifying party shall not, in respect of the legal expenses of any indemnified party in connection with any proceeding or related proceedings in the same jurisdiction, be liable for the fees and expenses of more than one separate firm (in addition to any local counsel) for all such indemnified parties and that all such fees and expenses shall be reimbursed as they are incurred. Such firm shall be designated in writing by the Underwriter, in the case of parties indemnified pursuant to Section 8(a), and by the Company, in the case of parties indemnified pursuant to Section 8(b). The indemnifying party shall not be liable for any settlement of any proceeding effected without its written consent, but if settled with such consent or if there be a final judgment for the plaintiff, the indemnifying party agrees to indemnify the indemnified party from and against any loss or

liability by reason of such settlement or judgment. Notwithstanding the foregoing sentence, if at any time an indemnified party shall have requested an indemnifying party to reimburse the indemnified party for fees and expenses of counsel as contemplated by the second and third sentences of this paragraph, the indemnifying party agrees that it shall be liable for any settlement of any proceeding effected without its written consent if (i) such settlement is entered into more than 30 days after receipt by such indemnifying party of the aforesaid request and (ii) such indemnifying party shall not have reimbursed the indemnified party in accordance with such request prior to the date of such settlement. No indemnifying party shall, without the prior written consent of the indemnified party, effect any settlement of any pending or threatened proceeding in respect of which any indemnified party is or could have been a party and indemnity could have been sought hereunder by such indemnified party, unless such settlement includes an unconditional release of such indemnified party from all liability on claims that are the subject matter of such proceeding.

(d) To the extent the indemnification provided for in Section 8(a) or 8(b) is unavailable to an indemnified party or insufficient in respect of any losses, claims, damages or liabilities referred to therein, then each indemnifying party under such paragraph, in lieu of indemnifying such indemnified party thereunder, shall contribute to the amount paid or payable by such indemnified party as a result of such losses, claims, damages or liabilities (i) in such proportion as is appropriate to reflect the relative benefits received by the Company on the one hand and the Underwriter on the other hand from the offering of the Shares or (ii) if the allocation provided by clause 8(d)(i) above is not permitted by applicable law, in such proportion as is appropriate to reflect not only the relative benefits referred to in clause 8(d)(i) above but also the relative fault of the Company on the one hand and of the Underwriter on the other hand in connection with the statements or omissions that resulted in such losses, claims, damages or liabilities, as well as any other relevant equitable considerations. The relative benefits received by the Company on the one hand and the Underwriter on the other hand in connection with the offering of the Shares shall be deemed to be in the same respective proportions as the net proceeds from the offering of the Shares (before deducting expenses) received by the Company and the total underwriting discounts and commissions received by the Underwriter bear to the aggregate initial public offering price of the Shares set forth in the Prospectus. The relative fault of the Company on the one hand and of the Underwriter on the other hand shall be determined by reference to, among other things, whether the untrue or alleged untrue statement of a material fact or the omission or alleged omission to state a material fact relates to information supplied by the Company or by the Underwriter and the parties’ relative intent, knowledge, access to information and opportunity to correct or prevent such statement or omission.

(e) The Company and the Underwriter agree that it would not be just or equitable if contribution pursuant to this Section 8 were determined by pro rata allocation or by any other method of allocation that does not take account of the equitable considerations referred to in Section 7(d). The amount paid or payable by an indemnified party as a result of the losses, claims, damages and liabilities referred to in Section 8(d) shall be deemed to include, subject to the limitations set forth above, any legal or other expenses reasonably incurred by such indemnified party in connection with investigating or defending any such action or claim. Notwithstanding the provisions of this Section 8, no Underwriter shall be required to contribute any amount in excess of the amount by which the total price at which the Shares underwritten by it and distributed to the public were offered to the public exceeds the amount of any damages

that such Underwriter has otherwise been required to pay by reason of such untrue or alleged untrue statement or omission or alleged omission. No person guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of the Securities Act) shall be entitled to contribution from any person who was not guilty of such fraudulent misrepresentation. The remedies provided for in this Section 8 are not exclusive and shall not limit any rights or remedies that may otherwise be available to any indemnified party at law or in equity.

(f) The indemnity and contribution provisions contained in this Section 8 and the representations, warranties and other statements of the Company contained in this Agreement shall remain operative and in full force and effect regardless of (i) any termination of this Agreement, (ii) any investigation made by or on behalf of the Underwriter, any person controlling the Underwriter or any affiliate of the Underwriter or by or on behalf of the Company, its officers or directors or any person controlling the Company and (iii) acceptance of and payment for any of the Shares.

9. Termination. The Underwriter may terminate this Agreement by notice to the Company, if after the execution and delivery of this Agreement and prior to any Closing Date (i) trading generally shall have been suspended or materially limited on, or by, as the case may be, any of the New York Stock Exchange, the American Stock Exchange or the NASDAQ Global Select Market, (ii) trading of any securities of the Company shall have been suspended on any exchange or in any over-the-counter market, (iii) a material disruption in securities settlement, payment or clearance services in the United States shall have occurred, (iv) any moratorium on commercial banking activities shall have been declared by Federal or New York State authorities, or (v) there shall have occurred any outbreak or escalation of hostilities, or any change in financial markets or any calamity or crisis that, in the judgment of the Underwriter, is material and adverse and which, singly or together with any other event specified in this clause (v), makes it, in the judgment of the Underwriter, impracticable to proceed with the offer, sale or delivery of the Shares on the terms and in the manner contemplated in the Time of Sale Prospectus or the Prospectus.

10. Effectiveness. This Agreement shall become effective upon the execution and delivery hereof by the parties hereto.

If this Agreement shall be terminated by the Underwriter because of any failure or refusal on the part of the Company to comply with the terms or to fulfill any of the conditions of this Agreement, or if for any reason the Company shall be unable to perform its obligations under this Agreement, the Company will reimburse the Underwriter for all out-of-pocket expenses (including the fees and disbursements of its counsel) reasonably incurred by the Underwriters in connection with this Agreement or the offering contemplated hereunder.

11. Entire Agreement. (a) This Agreement, together with any contemporaneous written agreements and any prior written agreements (to the extent not superseded by this Agreement) that relate to the offering of the Shares, represents the entire agreement between the Company and the Underwriter with respect to the preparation of any preliminary prospectus, the Time of Sale Prospectus, the Prospectus, the conduct of the offering, and the purchase and sale of the Shares.

(b) The Company acknowledges that in connection with the offering of the Shares: (i) the Underwriter has acted at arms length, are not agents of, and owe no fiduciary duties to, the Company or any other person, (ii) the Underwriter owes the Company only those duties and obligations set forth in this Agreement and prior written agreements (to the extent not superseded by this Agreement), if any, and (iii) the Underwriter may have interests that differ from those of the Company. The Company waives to the full extent permitted by applicable law any claims it may have against the Underwriter arising from an alleged breach of fiduciary duty in connection with the offering of the Shares.

12. Counterparts. This Agreement may be signed in two or more counterparts, each of which shall be an original, with the same effect as if the signatures thereto and hereto were upon the same instrument.

13. Applicable Law. This Agreement shall be governed by and construed in accordance with the internal laws of the State of New York.

14. Headings. The headings of the sections of this Agreement have been inserted for convenience of reference only and shall not be deemed a part of this Agreement.

15. Notices. All communications hereunder shall be in writing and effective only upon receipt and if to the Underwriter shall be delivered, mailed or sent to it at 4 World Financial Center, New York, New York 10080, Attention: Office of the General Counsel, facsimile number (000) 000-0000; and if to the Company shall be delivered, mailed or sent to it at 000 Xxxx Xxx Xxxxxx Xxxxxxx, Xxxxx, Xxxxxxx 00000; Attention: Xxxxx X. Xxxx; facsimile number (000) 000-0000, with a copy (at the same Company address) to the Office of the General Counsel; facsimile number (000) 000-0000.


	Very truly yours, US AIRWAYS GROUP, INC.
	By:
		Name:
		Title:

Accepted as of the date hereof

XXXXXXX XXXXX & CO.
XXXXXXX LYNCH, PIERCE, XXXXXX & XXXXX INCORPORATED

By: XXXXXXX LYNCH, PIERCE, XXXXXX & XXXXX INCORPORATED


By:

		Name:
		Title:

SCHEDULE I

1.		The initial public offering price per share for the Shares is $8.50.

2.		The number of Firm Shares purchased by the Underwriter is 19,000,000.

3.		The Company has granted the Underwriter the right to purchase up to 2,850,000 Additional Shares, solely to cover over-allotments.

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SCHEDULE II

1.		The initial public offering price per share for the Shares is $8.50.

2.		The Purchase Price for the Shares to be paid by the Underwriter shall be $8.19 a share, being an amount equal to the initial public offering price set forth above less $0.31 a share.

3.		The Lock-Up Restricted Period is 90 days.

4.		The Closing Date and Time shall be August 19, 2008, 9:00 a.m.

5.		The Closing Location shall be the offices of Xxxxxx Xxxxxxxx Xxxxx & Xxxxxxxx LLP, Xxx Xxxxxxx Xxxxx Xxx Xxxx, Xxx Xxxx 00000.

6.		The Registration Statement File No. is 333-137806.

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EXHIBIT C

[FORM OF LOCK-UP LETTER]

XXXXXXX XXXXX & CO.
Xxxxxxx Lynch, Pierce, Xxxxxx & Xxxxx Incorporated

As Underwriter

The undersigned understands that Xxxxxxx Xxxxx & Co., Xxxxxxx Lynch, Pierce, Xxxxxx & Xxxxx Incorporated (the “Underwriter”) proposes to enter into an Underwriting Agreement (the "Underwriting Agreement”) with US Airways Group, Inc., a Delaware corporation (the “Company”), providing for the public offering (the “Public Offering”) by the Underwriter of 19,000,000 shares (the “Shares”) of the common stock, par value $0.01 per share, of the Company (the “Common Stock”).

To induce the Underwriter to continue their efforts in connection with the Public Offering, the undersigned hereby agrees that, without the prior written consent of the Underwriter, it will not, during the period commencing on the date hereof and ending 90 days after the date of the final prospectus relating to the Public Offering (the “Prospectus”), (1) offer, pledge, sell, contract to sell, sell any option or contract to purchase, purchase any option or contract to sell, grant any option, right or warrant to purchase, lend, or otherwise transfer or dispose of, directly or indirectly, any shares of Common Stock or any securities convertible into or exercisable or exchangeable for Common Stock or (2) enter into any swap or other arrangement that transfers to another, in whole or in part, any of the economic consequences of ownership of the Common Stock, whether any such transaction described in clause (1) or (2) above is to be settled by delivery of Common Stock or such other securities, in cash or otherwise. The foregoing sentence shall not apply to (a) transactions relating to shares of Common Stock or other securities acquired in open market transactions after the completion of the Public Offering; provided that no filing under Section 16(a) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), shall be required or shall be voluntarily made in connection with subsequent sales of Common Stock or other securities acquired in such open market transactions, (b) transfers of shares of Common Stock or any security convertible into Common Stock to the undersigned’s affiliate or as a bona fide gift, or (c) distributions of shares of Common Stock or any security convertible into Common Stock to limited partners or stockholders of the undersigned; provided that in the case of any transfer or distribution pursuant to clause (b) or (c), (i) each affiliate, donee or distributee shall sign and deliver a lock-up letter substantially in the form of this letter, and (ii) no filing under Section 16(a) of the Exchange Act, reporting a reduction in beneficial ownership of shares of Common Stock, shall be required or shall be voluntarily made during the restricted period referred to in the foregoing sentence, (d) the issuance by the Company of Common Stock upon the exercise of an option or stock appreciation right or vesting of restricted stock units outstanding on the date hereof, (e) the sale of shares of common stock upon vesting of restricted stock units, but only to the extent necessary to pay withholding tax upon vesting or (f) the establishment of, or transactions pursuant to an

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existing, trading plan pursuant to Rule 10b5-1 under the Exchange Act for the transfer of shares of Common Stock; provided that a plan established after the date hereof does not provide for the transfer of Common Stock during the restricted period. In addition, the undersigned agrees that, without the prior written consent of the Underwriter, it will not, during the period commencing on the date hereof and ending 90 days after the date of the Prospectus, make any demand for or exercise any right with respect to, the registration of any shares of Common Stock or any security convertible into or exercisable or exchangeable for Common Stock. The undersigned also agrees and consents to the entry of stop transfer instructions with the Company’s transfer agent and registrar against the transfer of the undersigned’s shares of Common Stock except in compliance with the foregoing restrictions.

The undersigned understands that the Company and the Underwriter are relying upon this agreement in proceeding toward consummation of the Public Offering. The undersigned further understands that this agreement is irrevocable and shall be binding upon the undersigned’s heirs, legal representatives, successors and assigns.

Whether or not the Public Offering actually occurs depends on a number of factors, including market conditions. Any Public Offering will only be made pursuant to an Underwriting Agreement, the terms of which are subject to negotiation between the Company and the Underwriter. If for any reason, the Underwriting Agreement is terminated before any Shares are issued and sold, this agreement shall terminate.


		Very truly yours,


		(Name)


		(Address)

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US AIRWAYS GROUP, INC. 19,000,000 SHARES OF COMMON STOCK UNDERWRITING AGREEMENT

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