1
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549



                                    FORM 11-K


(X)   ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF
      1934 (FEE REQUIRED)

FOR THE FISCAL YEAR ENDED September 30, 2000

                                       or

( )   TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE
      ACT OF 1934 (NO FEE REQUIRED)

               For the transition period from ___________________

                         Commission file number 0-15495

                        MESA AIR GROUP, INC. 401(k) PLAN
                            (Full title of the plan)


                               Address of the plan

                              MESA AIR GROUP, INC.
          (Name of issuer of the securities held pursuant to the plan)

                        410 North 44th Street, Suite 700
                             Phoenix, Arizona 85008
                (Address of issuer's principal executive office)
   2
MESA AIR GROUP, INC. 401(k) PLAN
INDEPENDENT AUDITORS' REPORT

FINANCIAL STATEMENTS
Years Ended September 30, 2000 and 1999,
Supplemental Schedule
As of September 30, 2000
   3
MESA AIR GROUP, INC. 401(k) PLAN

TABLE OF CONTENTS
--------------------------------------------------------------------------------




                                                                            PAGE
                                                                        
INDEPENDENT AUDITORS' REPORT                                                   1


FINANCIAL STATEMENTS AS OF AND FOR THE YEARS
  ENDED SEPTEMBER 30, 2000 AND 1999:

   Statements of Net Assets Available for Benefits                             2

   Statements of Changes in Net Assets Available for Benefits                  3

   Notes to Financial Statements                                             4 - 6


SUPPLEMENTAL SCHEDULE AS OF SEPTEMBER 30, 2000  -
  Schedule of Assets Held for Investment Purposes at End of Year               7

   4
INDEPENDENT AUDITORS' REPORT


Trustee and Plan Participants
Mesa Air Group, Inc. 401(k) Plan
Phoenix, Arizona

We have audited the accompanying statements of net assets available for benefits
of the Mesa Air Group Inc. 401(k) Plan as of September 30, 2000 and 1999, and
the related statements of changes in net assets available for benefits for the
years then ended. These financial statements are the responsibility of the
Plan's management. Our responsibility is to express an opinion on these
financial statements based on our audits.

We conducted our audits in accordance with auditing standards generally accepted
in the United States of America. Those standards require that we plan and
perform the audit to obtain reasonable assurance about whether the financial
statements are free of material misstatement. An audit includes examining, on a
test basis, evidence supporting the amounts and disclosures in the financial
statements. An audit also includes assessing the accounting principles used and
significant estimates made by management, as well as evaluating the overall
financial statement presentation. We believe that our audits provide a
reasonable basis for our opinion.

In our opinion, such financial statements present fairly, in all material
respects, the net assets available for benefits of the Plan as of September 30,
2000 and 1999, and the changes in net assets available for benefits for the
years then ended in conformity with accounting principles generally accepted in
the United States of America.

Our audits were conducted for the purpose of forming an opinion on the basic
financial statements taken as a whole. The supplemental schedule listed in the
Table of Contents is presented for the purpose of additional analysis and is not
a required part of the basic financial statements, but is supplementary
information required by the Department of Labor's Rules and Regulations for
Reporting and Disclosure under the Employee Retirement Income Security Act of
1974. The schedule is the responsibility of the Plan's management. Such schedule
has been subjected to the auditing procedures applied in our audit of the basic
2000 financial statements and, in our opinion, is fairly stated in all material
respects when considered in relation to the basic financial statements taken as
a whole.



DELOITTE & TOUCHE LLP
Phoenix, Arizona

February 26, 2001
   5
MESA AIR GROUP, INC. 401(k) PLAN

STATEMENTS OF NET ASSETS AVAILABLE FOR BENEFITS
SEPTEMBER 30, 2000 AND 1999
-------------------------------------------------------------------------------



ASSETS                                                  2000                   1999
                                                                      
INVESTMENTS:
  Investments at fair value                          $24,906,500            $19,649,080
  Participant loans                                      562,576                507,142
                                                     -----------            -----------
           Total investments                          25,469,076             20,156,222
                                                     -----------            -----------
CONTRIBUTIONS RECEIVABLE:
  Employee                                               285,471                225,153
  Employer                                               118,084                 96,806
                                                     -----------            -----------
           Total contributions receivable                403,555                321,959
                                                     -----------            -----------
LIABILITIES                                                                       3,122
                                                     -----------            -----------
NET ASSETS AVAILABLE FOR BENEFITS                    $25,872,631            $20,475,059
                                                     ===========            ===========



See notes to financial statements.


                                      -2-
   6
MESA AIR GROUP, INC. 401(k) PLAN

STATEMENTS OF CHANGES IN NET ASSETS AVAILABLE FOR BENEFITS
YEARS ENDED SEPTEMBER 30, 2000 AND 1999
--------------------------------------------------------------------------------




                                                                 2000                     1999
                                                                                
ADDITIONS:
  Investment income:
    Interest and dividends                                   $  2,008,890             $  1,055,585
    Net appreciation in fair value of investments               3,360,520                3,446,277
                                                             ------------             ------------

           Total investment income                              5,369,410                4,501,862
                                                             ------------             ------------

  Contributions:
    Employee                                                    3,028,268                2,915,943
    Employer                                                    1,269,036                1,213,467
                                                             ------------             ------------

           Total contributions                                  4,297,304                4,129,410
                                                             ------------             ------------

           Total additions                                      9,666,714                8,631,272

DEDUCTIONS - Benefits paid to participants                     (4,269,142)              (3,206,562)
                                                             ------------             ------------

NET INCREASE                                                    5,397,572                5,424,710

NET ASSETS AVAILABLE FOR BENEFITS,
  BEGINNING OF YEAR                                            20,475,059               15,050,349
                                                             ------------             ------------

NET ASSETS AVAILABLE FOR BENEFITS,
  END OF YEAR                                                $ 25,872,631             $ 20,475,059
                                                             ============             ============



See notes to financial statements.


                                      -3-
   7
MESA AIR GROUP, INC. 401(k) PLAN

NOTES TO FINANCIAL STATEMENTS
YEARS ENDED SEPTEMBER 30, 2000 AND 1999
--------------------------------------------------------------------------------

1.    DESCRIPTION OF THE PLAN

      The following description of the Mesa Air Group, Inc. 401(k) Plan (the
      "Plan") provides only general information. Participants should refer to
      the Plan agreement for a more complete description of the Plan's
      provisions.

      a.    General - The Plan is a defined contribution plan sponsored by Mesa
            Air Group, Inc. (the "Employer"). Under the provisions of the Plan,
            as amended, union and nonunion employees of the Employer and its
            affiliates, other than West Air Holding, Inc. and CC Air, Inc., who
            are 21 years of age and have completed one year of service are
            eligible to participate. The Plan is subject to the provisions of
            the Employee Retirement Income Security Act of 1974 ("ERISA").
            Employees may elect to allocate their contributions and their share
            of Employer contributions to various investment options as specified
            in the Plan.

      b.    Contributions and Vesting - Various accounts have been established
            for pre-tax voluntary employee contributions, forfeitures and
            earnings or losses from Plan assets. Accounts in use and their major
            provisions are as follows:

            -     Employee Contribution Account - Salary Reduction Contribution
                  Accounts have been established for pre-tax voluntary employee
                  contributions ranging from 1 percent to 15 percent of employee
                  compensation up to the annual deferral limit set by the
                  Internal Revenue Code ("IRC"). All such balances are fully
                  vested.

            -     Employer Contributions Account - Contributions to this account
                  are at the discretion of the Employer. Employer contributions
                  currently match 50 percent of participant contributions up to
                  10 percent of compensation. In addition, the Employer may
                  contribute to the Plan a discretionary amount as determined by
                  the Employer's Board of Directors as a profit sharing
                  contribution. Employer discretionary contributions are
                  allocated to active participants based upon the ratio that
                  each participant's annual compensation bears to the total of
                  all active participants' annual compensation. Forfeitures are
                  reallocated as additional Employer matching contributions.

            -     Employees are 20 percent vested in Employer contribution
                  accounts after 3 years of service. Vesting subsequently
                  increases 20 percent per year until the participant becomes
                  fully vested. Participants also become fully vested upon
                  becoming disabled, reaching age 65, or death if still employed
                  by Mesa Air Group, Inc.

      c.    Participant Accounts - Each participant's account is credited with
            the participant's contribution, the employer's matching
            contribution, and an allocation of the employer's discretionary
            contribution and the Plan's earnings. The Employer's discretionary
            contribution is allocated to each participant in the ratio that each
            such participant's basic contribution (up to 4 percent) for the Plan
            year bears to all basic contributions of all participants. The
            Plan's earnings are allocated to each participant in the ratio that
            each such participant's account balance for each fund bears to the
            total balance in that fund of all eligible participants on the date
            of each such allocation.


                                      -4-
   8
      d.    Investment Options - As of September 30, 2000, participants may
            direct employee contributions in 1 percent increments in any of six
            investment options offered by Putnam and a fund that invests in Mesa
            Air Group, Inc. common stock.

      e.    Payment of benefits is available upon retirement, death, disability
            or termination. Benefits are paid in the form of a lump-sum payment,
            installments or a nontransferable annuity. Participants may withdraw
            amounts from their account as set forth in the provisions of the
            Plan document for certain hardship situations.

      f.    Participant Loans - Participants may borrow from their accounts a
            minimum of $1,000 and a maximum equal to the lesser of $50,000,
            reduced by the highest outstanding loan balance during the preceding
            twelve months, or 50 percent of their vested benefits. Loan terms
            range from one through five years unless funds are used to purchase
            a primary residence. The loans are secured by the balance in the
            participant's account. The loans accrue interest at a fixed rate
            determined by the Plan Administrator. The rate will be comparable to
            those currently available from commercial institutions. Interest
            rates range from 7 percent to 9.25 percent. Principal and interest
            are payable through monthly payroll deductions.

      g.    Plan Termination - Although it has not expressed any intent to do
            so, the Employer has the right under the Plan to discontinue its
            contributions at any time and to terminate the Plan subject to prior
            approval of the Internal Revenue Service and the Department of
            Labor. Upon complete discontinuance of contributions under the Plan,
            all employees' rights are non-forfeitable.

      h.    Tax Status - The Internal Revenue Service has determined and
            informed the Employer by letter dated December 23, 1998 that the
            Plan and related trust are designed in accordance with applicable
            sections of the IRC. The Plan has been amended since receiving the
            determination letter; however, the Plan Administrator believes the
            Plan is designed and is currently being operated in compliance with
            the applicable requirements of the IRC.

2.    SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

      The Plan prepares its financial statements in accordance with accounting
      principles generally accepted in the United States of America. Significant
      accounting policies are as follows:

      a.    Basis of Accounting - The accompanying financial statements of the
            Plan have been prepared in accordance with accounting principles
            generally accepted in the United States of America using the accrual
            basis of accounting.

      b.    Use of Estimates - The preparation of financial statements in
            conformity with accounting principles generally accepted in the
            United States of America requires the Plan Administrator to make
            estimates and assumptions that affect the reported amounts of net
            assets available for benefits and changes therein, and disclosure of
            contingent assets and liabilities. Actual results could differ from
            those estimates.

      c.    Investment Valuation - Mutual fund investments and Mesa Airlines
            Group, Inc. common stock are stated at market value based upon
            quoted market prices as determined by the Plan Trustee. Participant
            loans are valued at cost, which approximates fair value. Purchases
            and sales are recorded on a trade-date basis. Dividends are recorded
            on the ex-dividend date.

      d.    Administrative Expenses - All administrative expenses are paid by
            the Employer.

      e.    Payment of Benefits - Benefits are recorded when paid.


                                      -5-
   9
3.    INVESTMENTS

      The following presents investments that represent five percent or more of
      the Plan's net assets.



                                                        2000                  1999
                                                                      
            PUTNAM FIDUCIARY TRUST COMPANY
            Putnam Money Market Fund                  $1,583,661            $1,481,749
            Putnam Growth and Income Fund              3,797,321             4,036,641
            Putnam Global Growth Fund                  2,391,972             1,834,384
            Putnam Voyager Fund                        7,574,009             6,032,625
            Putnam New Opportunities                   7,725,566             4,643,236



      During the years ended September 30, 2000 and 1999, the Plan's investments
      (including investments bought and sold, as well as held during the year)
      appreciated by $3,360,520 and $3,446,277, respectively.

4.    RELATED-PARTY TRANSACTIONS

      Certain Plan investments are shares of mutual funds managed by Putnam
      Fiduciary Trust Company ("Putnam"). Putnam is the Trustee as defined in
      the Plan; therefore, these transactions qualify as party-in-interest
      transactions.

                                    * * * * *


                                      -6-
   10
MESA AIR GROUP INC. 401(k) PLAN

SUPPLEMENTAL SCHEDULE
SEPTEMBER 30, 2000
--------------------------------------------------------------------------------

SCHEDULE OF ASSETS HELD FOR INVESTMENT PURPOSES AT END OF YEAR




           COLUMN B                                 COLUMN C                         COLUMN E
------------------------------    -------------------------------------------      -------------
      IDENTITY OF ISSUER,                 DESCRIPTION OF INVESTMENT
       ISSUER, BORROWER,                  INCLUDING MATURITY DATE,
          LESSOR OR                      RATE OF INTEREST, COLLATERAL,                CURRENT
        SIMILAR PARTY                       PAR OR MATURITY VALUE                      VALUE
------------------------------    -------------------------------------------      -------------
                                                                             
Putnam Fiduciary Trust Company    Voyager Fund - 250,795.009 shares                $ 7,574,009
Putnam Fiduciary Trust Company    Growth and Income Fund - 198,604.652 shares        3,797,321
Putnam Fiduciary Trust Company    New Opportunities - 82,073.372 shares              7,725,566
Putnam Fiduciary Trust Company    Money Market Fund - 1,583,660.502 shares           1,583,661
Putnam Fiduciary Trust Company    Income Fund Portfolio - 113,848.161 shares           720,659
Putnam Fiduciary Trust Company    Global Growth Fund - 152,064.346 shares            2,391,972
Mesa Airlines, Inc.               Common stock - 203,576.978 shares                  1,113,312
Participant loans                 Maturing from 2001 to 2005, with interest
                                    rates ranging from 7.00% to 9.25%                  562,576
                                                                                   -----------

                                  Total assets held for investment purposes        $25,469,076
                                                                                   ===========



                                      -7-
   11
                                   SIGNATURES



      The Plan, pursuant to the requirements of the Securities Exchange Act of
1934, the Trustees (or other persons who administer the employee benefit plan)
have duly caused this Annual Report to be signed on its behalf by the
undersigned hereunto duly authorized.


                                    PUTNAM INVESTMENTS



Dated:  March 29, 2001                  By: /s/ Justine M. Woodard
        ----------------                --------------------------------
                                                Justine M. Woodard
   12
                                  EXHIBIT INDEX



Exhibit
Number      Description of Exhibit
------      ----------------------
         
23          Independent Auditors' Consent