SAS allows passengers to cancel their flights within 24 hours of booking for a full refund, regardless of the fare type. After this window, the cancellation policy becomes dependent on the fare class. Flexible fares typically allow for cancellations with minimal fees, while non-refundable tickets may have stricter policies. It's essential to understand your fare rules before canceling. Head to the SAS website to explore the specifics or connect with their customer service team for support.