Southwest Airlines will charge you a Cancellation fee
if you change your flight plans after the 24-hour grace period has passed. The cost varies according to the route, fare type, and moment the cancellation occurs. The following is a list of costs you would incur if you had to cancel the flight:
Wanna Get Away tickets have a $200 per traveller cancellation fee.
Anytime tickets have a $150 per passenger cancellation fee.
Business Select tickets have a 125 USD per passenger cancellation fee.
For Wanna Get Away fares, No Show is not allowed. The cost of Anytime tickets is USD 150 plus USD 50 for each person. Additionally, in the event of a no-show, the passenger for Business Select must pay USD 125 plus USD 75 per person.Check more : Jetblue cancellation fee