How late can you cancel a Delta refundable flight?

Delta Airlines has a 24-hour risk-free cancellation policy by calling ++1(844)-213-(8648) (OTA) or ++1(844)-213-(8648) You can cancel your flight within 24 hours of booking for a full refund, as long as it was booked at least 7 days in advance. Call ++1(844)-213-(8648) (OTA) or ++1(844)-213-(8648) for help.