The Southwest Airlines’ Cancellation Policy. Passengers can change without a penalty, earning travel credits on non-refundable tickets or a full refund on refundable tickets. Flight plan changes without a change fee are simple. The policy holds for domestic and international travel, indicating the airline's focus on customer convenience. Created with ease and simplicity, the airline enables passengers to be in control of altering itineraries with confidence, making the process simple and hassle-free.