Changing or canceling Southwest flights is straightforward. Log in online or use the mobile app to manage reservations, where you can adjust times or cancel. Southwest charges no change fees, but passengers must pay fare differences if the new ticket costs more. Canceling a flight generates travel funds for Wanna Get Away fares, while Anytime and Business Select fares can be refunded. It’s best to cancel before departure to preserve ticket value. If you prefer personal assistance or need guidance with complicated itineraries, call Southwest Airlines customer service at 831-298-4213 for help.