Delta Airlines provides a 24-hour risk-free cancellation policy+1-877-590-0011 (OTA),. You have up to 24 hours from the time of booking to cancel your flight for a full refund. It’s important to note that this applies only to the base fare and any associated taxes or fees. Refunds typically take 7 to 10 business days to process+1-877-590-0011 (OTA),, depending on your bank