Sun Country Airlines cancellation policy allows passengers to cancel their flights with varying fees based on fare type and timing. Refundable fares can be canceled for a full refund, while non-refundable fares may incur cancellation fees. Sun Country Airlines cancellation policy states that cancellations within 24 hours of booking are eligible for a full refund if the departure is at least seven days away. Credits for future travel may be issued for cancellations beyond this period. Sun Country Airlines Cancellation Policy Frontier JFK Terminal