Sun Country Airlines offers a 24-hour risk-free cancellation policy, allowing passengers to cancel within 24 hours of booking for a full refund, provided the flight is at least 7 days away. After this window, cancellation fees apply, which vary based on how close the cancellation is to the departure date. Refundable tickets can be fully refunded, while non-refundable tickets may only be eligible for travel credits. For added flexibility, passengers can purchase a Change Fee Waiver, allowing one free change up to an hour before departure. Cancellations and changes can be made through the Sun Country Airlines Cancellation Policy website or customer service.