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Sun Country Airlines flight changes, cancellations & booking help
Sun Country's rules reward travellers who decide early and punish those who decide late, more sharply than most U.S. carriers. Here is exactly where the lines fall. Policy details verified 2026-09-20.
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Flights Cheap Fare is an independent travel agency. We are not affiliated with, endorsed by, or an agent of Sun Country Airlines. Sun Country Airlines trademarks belong to their owner. For the airline's official channels, visit its website directly. When you use our service, we assist as an independent agency and charge a service fee that is disclosed before any payment.
Sun Country Airlines policy at a glance
- 60 days or more before departure: Changes and cancellations are free. This is the most useful fact about Sun Country: move early and it costs nothing.
- Inside 60 days: Change and cancellation fees apply per direction, per traveller, and they are cumulative — change twice and you pay twice.
- Flexible Fare add-on: Buy it at booking, for every traveller on the reservation, and it waives the fee on one change made at least an hour before the first flight. After that, standard fees resume.
- Voucher expiry: Flight vouchers expire one year from the date the original itinerary was booked — not from the date you cancelled.
- No-show fee: $300 per direction if you simply do not turn up, under Rule 135 of the contract of carriage.
- 24-hour rule: Cancel within 24 hours of booking without penalty, provided the booking was made more than 7 days (168 hours) before departure.
Summary of publicly available airline policy as of 2026-09-20, taken from Sun Country's published payment, change and cancellation policy, including its 24-hour rule, Flexible Fare add-on terms, voucher expiry and the Rule 135 no-show fee. Your ticket's fare rules control — we verify them before any change. For official information, see the airline's own website.
The part that costs people money
Two things catch people here. The voucher clock starts at booking, not at cancellation, so if you booked in January for a December trip and cancel in November, the voucher may have weeks left rather than a year. And the $300 no-show fee, per direction, makes walking away silently the most expensive option on the board. Cancel, even an hour out.
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Our service fee for assisted requests is disclosed before you approve anything. No fee is ever added after authorization.
Your rights on every U.S. airline
Under U.S. DOT rules you can cancel any ticket within 24 hours of booking for a full refund (when departure is 7+ days away), and you are owed a cash refund — not just credit — when the airline cancels or significantly changes your flight.
Frequently asked questions
Can I change a Sun Country flight for free?
Yes, if you change 60 or more days before departure. Inside 60 days, change fees apply per direction and per traveller, and they are cumulative across multiple changes. The Flexible Fare add-on waives the fee for one change if you bought it at booking.
When do Sun Country flight vouchers expire?
One year from the date the original itinerary was booked, not from the date of cancellation. They can be used for travel beyond that date as long as the booking is made before it, and the credit is non-refundable and non-transferable.
What is Sun Country's no-show fee?
$300 per direction, as defined in Rule 135 of the contract of carriage. Cancelling before departure, even shortly before, avoids it.
Does Sun Country have a 24-hour cancellation rule?
Yes. A reservation made directly with Sun Country can be cancelled without penalty within 24 hours, provided it was booked more than 7 days (168 hours) before departure.
Related reading
Changing a flight · Cancellations and refunds · All airline guides · Blog
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