Exhibit 10.1




                               TPG ADVISORS, INC.

                         301 Commerce Street, Suite 3300
                             Fort Worth, Texas 76102

                                  May 19, 2005

America West Holdings Corporation
111 West Rio Salado Parkway
Tempe, Arizona 85281

Attention:   W. Douglas Parker
             Chairman, President and Chief Executive Officer

Gentlemen,

         Pursuant to our recent conversations, we are pleased to confirm the
arrangements under which TPG Advisors, Inc. ("TPG") will continue to provide
certain consulting and advisory services to, and will receive certain
contributions and reimbursements from, America West Holdings Corporation (the
"Company") in connection with the Agreement and Plan of Merger, dated as of
May 19, 2005, among the Company, US Airways Group, Inc., a Delaware corporation,
and a subsidiary to be formed by US Airways Group, Inc., a Delaware corporation
and a wholly owned subsidiary of US Airways Group, Inc. (the "Agreement"}.

1.       Scope of Engagement. As your non-exclusive financial consultant and
advisor, TPG will continue to perform such financial consulting and advisory
services for the Company in connection with (i) the transactions contemplated by
the Agreement (the "Transactions") and (ii) certain other matters, as you may
reasonably request, including without limitation assisting the Company in
analyzing, structuring, negotiating and effecting the Transactions on the terms
and conditions of this letter agreement (collectively, the "Services").

2.       Payment Amount. The Company agrees to pay to TPG in consideration of
TPG providing the Services, and in contribution for and reimbursement of certain
expenses incurred by TPG in connection with the Transactions and providing the
Services, a contingent payment of $6,400,000 (the "Payment Amount"), payable in
a lump sum at, and subject to the occurrence of, the Effective Time (as such
term is defined in the Agreement). No fee or expense reimbursement payable to
any other person, whether payable by the Company or any other party, in
connection with the subject matter of this engagement shall reduce or otherwise
affect any amount payable hereunder. The Payment Amount shall be the sole and
complete compensation to TPG for its consulting and advisory services rendered
to the Company and all expenses incurred in connection with the Transactions and
providing the Services. In the event that the Effective Time does not occur for
any reason, the Company shall have no further obligations to TPG with respect to
the subject matter of this letter agreement. The Payment Amount payable
hereunder shall be net of all applicable withholding and similar taxes.

3.       Disclosure. Any advice, opinion or analysis provided by TPG hereunder
will be solely for the use and benefit of the Board of Directors, any committee
thereof and senior management of the Company, and wilt not be quoted,
reproduced, summarized, or otherwise disclosed without TPG's prior written
consent.



4.       Independent Contractor. TPG has been retained to act solely as
financial consultant and advisor to the Company in providing the Services and,
in such capacity, shall act as an independent contractor and in no other
capacity, and any duties of TPG arising out of its engagement pursuant to this
letter agreement shall be owed solely to the Company and to no other party. TPG
shall have no obligation to the Company other than to provide the Services as
described hereunder.

5.       Termination. TPG's engagement under this letter agreement will continue
until the earlier of (i) the Effective Time, (ii) termination of the Agreement
for any reason, or (iii) written notice given by either the Company to TPG or
TPG to the Company; provided that the Company's obligations to pay the Payment
Amount provided by Section 2 above shall survive any such termination.

6.       Miscellaneous.

         (a)      TPG in providing the Services is acting solely as a financial
         consultant and advisor to the Company and is not an expert on, and
         cannot render opinions regarding, legal, accounting, regulatory or tax
         matters. You should consult with your other professional advisors
         concerning these matters before undertaking the Transactions or other
         actions. TPG makes no representations or warranties in respect of the
         Services, express or implied, and in no event shall TPG be liable to
         the Company or any affiliate for any act, alleged act, omission or
         alleged omission in connection with the Services that does not
         constitute willful misconduct as determined by a final, non-appealable
         determination of a court of competent jurisdiction.

         (b)      No waiver, amendment or other modification of this letter
         agreement shall be effective unless in writing and signed by each party
         to be bound thereby. This letter agreement shall inure to the benefit
         of and be binding on the Company, TPG and their respective successors.

         (c)      Nothing in this letter is intended to confer upon any other
         person (including the stockholders, employees or creditors of the
         Company) any rights or remedies hereunder or by reason hereof.

         (d)      In case any provision of this letter agreement shall be
         invalid, illegal or unenforceable, the validity, legality and
         enforceability of the remaining provisions of this letter agreement
         shall not in any way be affected or impaired thereby and such provision
         shall be construed by limiting it so as to be valid and enforceable to
         the maximum extent consistent with and possible under applicable law.

         (e)      This Agreement contains the entire understanding of the
         parties with respect to the subject matter hereof and supersedes any
         prior communication or agreement with respect thereto.

         (f)      This letter agreement shall be governed by, and construed and
         interpreted in accordance with, the laws of the State of New York.

         (g)      Any action or proceeding against the parties relating in any
         way to this letter agreement shall, be brought exclusively in the
         United States District Court for the Southern District of New York
         sitting in Manhattan or the Supreme Court of the State of New York for
         the County of New York (the "Chosen Courts") (to the extent subject
         matter jurisdiction exists therefore), and the parties (i) irrevocably
         submit to the jurisdiction of the Chosen Courts, (ii) waive any
         objection, to the fullest extent permitted by law, to laying venue in
         any such action or proceeding in the Chosen Courts, (iii) waive any
         objection, to the fullest extent permitted by law, that the Chosen
         Courts are an inconvenient forum or do not have jurisdiction over any
         party hereto and (iv) agree that any actions or proceedings to enforce
         a judgment issued by one of the foregoing courts may be enforced in any
         jurisdiction.

         (h)      To the extent not prohibited by applicable law that cannot be
         waived, each party to this letter agreement waives, and covenants that
         such party Will not assert (whether as plaintiff, defendant or
         otherwise), any right to trial by jury in any forum in respect of any
         issue, claim or proceeding arising out of this letter agreement or the
         subject matter hereof, in each case whether now existing



         or hereafter arising and whether in contract, tort or otherwise. Any
         party to this letter agreement may file an original counterpart or a
         copy of this provision with any court as written evidence of the
         consent of the parties to the waiver of their rights to trial by jury.

         (i)      This Agreement may be executed in any number of counterparts
         and by each of the parties hereto in separate counterparts, each of
         which when so executed shall be deemed to be an original and all of
         which together shall constitute one and the same agreement.

         Please confirm that the foregoing correctly sets forth our agreement by
signing and returning to TPG the duplicate copy of this letter agreement
enclosed herewith. We are delighted to accept this engagement and look forward
to working with you towards successful consummation of the Transactions.

                                                 Very truly yours,

                                                 TPG ADVISORS, INC.

                                                 By:  /s/ Richard Schifter
                                                      --------------------------
                                                      Name: Richard Schifter
                                                      Title: Vice President

Accepted and Agreed to as of the date first written above:

AMERICA WEST HOLDINGS CORPORATION

By:   /s/ W. Douglas Parker
   ------------------------------------
   Name:  W. Douglas Parker
   Title: Chairman and Chief
          Executive Officer Title: