Spirit Airlines’ flight change policy allows passengers to make changes to their flight for a fee, depending on the type of fare and how far in advance the change is made. Changes can be made up to 24 hours before the scheduled departure, with fees typically higher the closer the change is to the departure time. Fares for “Bare Fare” tickets may incur higher fees, while “Flight Flex” add-ons offer more flexibility, including free changes. Refunds for changes are generally not provided unless the change is due to airline cancellation.