This document provides a reconciliation of certain GAAP financial measures for Delta Airlines for January 2007 and 2006. It shows PRASM adjusted to exclude charter revenue and length of haul adjustments. It also shows mainline CASM adjusted to exclude fuel expenses. These non-GAAP measures are used by management to provide more meaningful comparisons by removing factors outside of Delta's control, such as fuel prices and charter revenue, which management believes masks the progress toward its business plan targets.

1. Reconciliation of GAAP Financial Measures to Non-GAAP Financial Measures
January 31, 2007
One Month Ended
January 31,
2007 2006
PRASM 9.69 ¢ 9.34 ¢
Adjustment for charter revenue (0.05) (0.06)
PRASM excluding charter revenue 9.64 ¢ 9.28 ¢
Length of haul adjustment (0.41) (0.58)
Length of Haul adjusted PRASM excluding charter revenue 9.23 ¢ 8.70 ¢
Mainline CASM 10.09 ¢ 10.60 ¢
Fuel expense (2.90) (2.86)
Mainline CASM excluding fuel expense 7.19 ¢ 7.74 ¢
The above tables show reconciliations of certain GAAP financial measures adjusted for the items shown.
• Delta presents length of haul adjusted PRASM excluding charter revenue because management believes this
provides a more meaningful comparison of the company’s PRASM to the industry.
• Delta presents mainline CASM excluding fuel expense because management believes high fuel prices mask
the progress that Delta achieved toward its business plan targets.
F