EXHIBIT 31.3 I, Gerald Grinstein, certify that: 1. I have reviewed this amendment to the annual report on Form 10-K of Delta Air Lines, Inc. for the fiscal year ended December 31, 2005; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report; Date: April 28, 2006 /s/ Gerald Grinstein -------------------- Gerald Grinstein Chief Executive Officer