INDIANAPOLIS—(BUSINESS WIRE)—March 21, 2002—ATA (American Trans Air, Inc.) (Nasdaq:AMTR), the nation`s 10th largest carrier (based on revenue passenger miles), today announced that it will no longer pay base commissions for tickets issued by travel agents in the United States and its territories, effective immediately.

The decision applies to all tickets, Miscellaneous Change Orders (MCOs), Prepaid Ticket Advices (PTAs) and bookings made online via the Internet for travel on ATA or Chicago Express Airlines, Inc. (doing business as ATA Connection).

ATA will have no further comment on this announcement. Travel agents may obtain additional information by referring to the key word “commission” on the Direct Reference System (DRS) of the computer reservation system.

ATA offers significant scheduled service from Chicago-Midway and Indianapolis to 36 business and vacation destinations. For more information about the Company, visit the website at www.ata.com.

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