Sun Country Airlines offers a 24-hour risk-free cancellation policy, allowing you to cancel your flight for a full refund if booked at least 7 days before departure. After 24 hours, cancellation fees apply, and non-refundable tickets may be eligible for flight credits instead of a refund. Changes to flights can also be made for a fee, depending on availability.
https://www.airlinesticketoffice.com/blog/sun-country-airlines-cancellation-policy/