UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON, DC 20549

                                    FORM 8-K

                             CURRENT REPORT PURSUANT
                          TO SECTION 13 OR 15(D) OF THE
                         SECURITIES EXCHANGE ACT OF 1934


         Date of report (Date of earliest event reported) May 30, 2005

                               ATA Holdings Corp.
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             (Exact Name of Registrant as Specified in Its Charter)

                                     Indiana
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                 (State or Other Jurisdiction of Incorporation)

        000-21642                                      35-1617970
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   (Commission File Number)                   (IRS Employer Identification No.)

                7337 West Washington Street
                   Indianapolis, Indiana                            46231
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         (Address of Principal Executive Offices)                 (Zip Code)

                                 (317) 247-4000
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              (Registrant's Telephone Number, Including Area Code)

                                 Not Applicable
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          (Former Name or Former Address, if Changed Since Last Report)

     Check the  appropriate  box below if the Form 8-K  filing  is  intended  to
simultaneously  satisfy the filing obligation of the registrant under any of the
following provisions (see General Instruction A.2. below):

     |_| Written communications pursuant to Rule 425 under the Securities Act
         (17 CFR 230.425)

     |_| Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17
         CFR 240.14a-12)

     |_| Pre-commencement communications pursuant to Rule 14d-2(b) under the
         Exchange Act (17 CFR 240.14d-2(b))

     |_| Pre-commencement communications pursuant to Rule 13e-4(c) under the
         Exchange Act (17 CFR 240.13e-4(c))


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Item 1.01         Entry into a Material Definitive Agreement.

     On December  23, 2004,  ATA  Holdings  Corp.  (the  "Company"),  its debtor
affiliates  and and  subsidiaries  (collectively,  the  "Debtors") and Southwest
Airlines  Co.  ("Southwest")  executed  a document  entitled  "Bid  Proposal  to
Purchase  From,  Provide a DIP Facility and Exit Facility To, and Codeshare With
ATA  Holdings  Corp."  which  was  dated  as of  December  22,  2004  (the  "Bid
Proposal"),  pursuant to which  Southwest  agreed,  among other  things,  to (i)
provide  the   Company's   subsidiary,   ATA   Airlines,   Inc.   ("ATA")   with
debtor-in-possession  loan facility and (ii) codeshare with ATA out of specified
airports.  As required by the Bid  Proposal,  ATA and  Southwest  entered into a
Secured  Debtor-in-Possession Credit and Security Agreement dated as of December
22, 2004 (the "Credit  Agreement")  and the  Southwest-ATA  Codeshare  Agreement
dated as of December 22, 2004 (the "Codeshare Agreement").

     Pursuant  to the Bid  Proposal,  the  Credit  Agreement  and the  Codeshare
Agreement,  Debtors were required to have a plan of reorganization  confirmed by
the  Bankruptcy  Court by September 30, 2005.  On May 30, 2005,  the Company and
ATA, as the case may be, and Southwest entered into (i) a letter of amendment to
the Bid  Proposal  dated as of May 23,  2005,  (ii) a Fifth  Amendment to Credit
Agreement  dated as of May 30, 2005 and (iii) a First Amendment to the Codeshare
Agreement  dated as of May 30, 2005,  effectively  extending  the time period by
which the Debtors must have a confirmed plan of  reorganization  to December 31,
2005.

     The amendments have been approved by the Air  Transportation  Stabilization
Board and the  Official  Creditors  Committee  for the Company in its Chapter 11
case.


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                                     SIGNATURES

         Pursuant to the requirements of the Securities Exchange Act of 1934,
the registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.

                                     Dated:  June 1, 2005

                                     ATA HOLDINGS CORP.



                                     By:/s/Brian T. Hunt
                                     ------------------------------------------
                                     Name:    Brian T. Hunt,
                                     Title: Vice President and General Counsel


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