Willing to postpone your Sun Country flights? You must first familiar yourself with the Sun Country cancellation policy. You won't have a better understanding of the flight cancellation process until after that. A full ticket refund is available to customers who cancel their flights within 24 hours of the original booking time. In contrast, if you don't finish the Sun Country airline cancellation within this time frame, the airline will charge you an additional fee.
https://airlinespolicy.com/cancellation-policy/sun-country-cancellation-policy/