Exhibit 99.1 1 CONTACT: Investor Relations Corporate Communications 404-715-2170 404-715-2554 InvestorRelations@delta.com Media@delta.com Delta Air Lines Announces June Quarter 2024 Financial Results Delivered industry-leading operational performance, underpinning trusted brand and customer loyalty Record June quarter revenue with mid-teens operating margin and strong cash generation Continued debt repayment, progressing balance sheet toward investment grade metrics Announced a 50 percent increase to divide ...