As one of the dominant budget airlines in the United States, Spirit Airlines provides flexibility for customers who need to cancel their flights. With the cancellation policy of Spirit, you can cancel your booking up to 24 hours before the scheduled departure time without incurring any Spirit cancellation fee. Also, if you cancel within this window, you will get a refund to your original payment mode. However, outside the 24-hour free cancellation window, the airline will charge a fee depending on factors such as fare type, destination and when you cancel your reservation.