Southwest Airlines offers a flexible cancellation policy with no change fees. Cancellations made 10 minutes before departure provide a refund as a flight credit for non-refundable tickets, or a full refund for refundable tickets. Ensure to cancel online or via the mobile app for seamless processing.

https://www.rcyouthleague.com/forum/general-discussion/what-is-the-process-southwest-airlines-cancellation-and-refund-policy