https://www.americanexpress.com/en-us/benefits/offers/? Eligible/Select American Express Platinum/Centurion Cardholders: $100 Statement Credit when you book a flight w/ your enrolled American Express Card on American Express Travel for Delta Marketed Flights and spend $500+ in one or more purchases by July 31, 2025. Flights must originate in the U.S. and purchase must be in USD. Airline travel can occur after the promotional end date, provided that the booking was made within the applicable promotional period.