The document reconciles GAAP and non-GAAP financial measures for October 31, 2006 and October 31, 2005. It shows that mainline cost per available seat mile (CASM) excluding fuel expenses was 7.12 cents in 2006 and 7.42 cents in 2005. It also shows that passenger revenue per available seat mile (PRASM) adjusted for length of haul was 9.99 cents in 2006 and 8.68 cents in 2005.

1. Reconciliation of GAAP financial measures to Non-GAAP financial measures
October 31, 2006
For the For the
Month Ended Month Ended
October 31, 2006 October 31, 2005
Mainline CASM 10.44 ¢ 10.94 ¢
Fuel expense (3.32) (3.52)
Mainline CASM excluding fuel expense 7.12 ¢ 7.42 ¢
PRASM 10.40 ¢ 9.25 ¢
Length of haul adjustment to industry average (0.41) (0.57)
Length of haul adjusted PRASM 9.99 ¢ 8.68 ¢