Passengers have the right to change their flights at least 10 minutes before departure if they need to postpone or change flights for any reason. Southwest Airlines will not charge you an extra fee if they change your flight for any reason. According to Southwest Airlines' trip change policy, if you rebook a more expensive flight than your initial booking, you must pay the difference in fare.
https://flightcancellationpoli....cy.com/southwest-air
The Flight Cancellation Policy understands that travel plans can change unexpectedly. That\s why we are dedicated to providing flight cancellation and rebooking services to our customers 24/7. Our experienced team works 24/7 to ensure you can cancel and modify your reservation or your baggage policy, whether you booked directly with an airline or through an online travel agency.