In addition, you can call the customer support team to get instant advice from Southwest's cancellation policy experts if you need more information on the airline's cancellation policy or want to Cancel Southwest flight reservation. Southwest Airlines' cancellation policy states that after cancelling a flight, you must wait at least 24 hours before receiving your refund in your specified bank account. The Southwest Airlines cancellation policy will apply if there is a delay in the refund or you do not receive any information about the refund. You should not hesitate to speak with specialists that can offer you a number of strategies and easy ways to manage an airline ticket that has already been purchased in less time. than in a flash and give you details on Southwest Airlines' cancellation policy.