How to Save 15% on Delta SkyMiles Awards With a Delta Credit Card by Tyler Glatt and Harrison Pierce June 17, 2025 2 If you have a Delta SkyMiles credit card, you can book Delta-operated award flights cheaper than anyone else. Thanks to the staple TakeOff 15 benefit that adorns almost every Delta American Express co-branded card, you can save 15% on Delta award tickets. While it may not seem like much, this perk can be the key to unlocking unparalleled savings on award bookings. Here's what cardholders need to know about the TakeOff 15 benefit.