To cancel a flight on the Delta Air Lines app, open the app and tap “My Trips.” Find the reservation you want to cancel and select it. You should see a “Cancel Flight” option — tap that and follow the prompts to confirm. You’ll see any refund or travel credit details before you finish. If you cancel within 24 hours of booking, you’ll usually get a full refund; after that, many fares turn into eCredits you can use later. If you don’t see the cancel option in the app, you can also cancel online through Delta’s website or contact customer service for help.
