Exhibit 23.3

The Board of Directors
Ambac Assurance Corporation

We consent to the incorporation by reference in the Form S-4 2000-1 Pass
Through Trusts Pass Through Certificates, Series 2000-1 of Amtran, Inc. and
American Trans Air, Inc. (the "Registrants") of our report dated January
21, 2000 on the consolidated financial statements of Ambac Assurance
Corporation and subsidiaries as of December 31, 1999 and December 31, 1998
and for each of the years in the three-year period ended December 31, 1999,
which report appears in the Form 10-K of Ambac Financial Group, Inc., which
was filed with the Securities and Exchange Commission on March 13, 2000 and
to the reference to our firm under the heading "Experts" in the
registration statement.

/s/ KPMG LLP

New York, New York
August 11, 2000