Originally Posted by Tyler Payne

Southwest just announced today that Flight Credits no longer expire. I had a couple LUV Vouchers that I hadn't used yet, so I called the SW Customer Service line to ask if I could extend the expiration date. He suggested that I book a flight using the LUV Vouchers, then cancel the flight. Then the Voucher money used would go back to my account as a Flight Credit with no expiration date. It worked! Great loophole to get rid of the expiration date on your LUV Vouchers.