Sun Country applies a flight change fee to all passengers who purchase non-refundable tickets. The airline does not apply a flight change fee if Sun Country Airlines reschedules your flight. Check out the details below to learn more about the flight change fee structure.
If you book your ticket 60 days prior to scheduled departure and wish to make changes to your reservation, It will be subject to free of charge.
However, if you make changes 14-59 days before departure, the departure charges will apply to 36 dollars per passenger.
79-dollar charges will apply if your changes are made 14 days before the departure.
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What Is Sun Country Airlines Flight Change Policy, Fee

A guide to Sun Country flight change policy, Find out how to change your flight (date/destination) or find out the fare and cost of changing your flight