You can change or cancel your Sun Country flight before it takes off without incurring any fees. According to Sun Country Airlines flight change rules and fees, if you change your trip 60 days or more before your journey, you will not be charged any additional expenses. You may be charged a fee if you make adjustments close to your flight date. If you or someone going with you becomes ill unexpectedly and you are unable to complete your journey, Sun Country may let you utilise your ticket at a later time.
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