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.