However, to my knowledge, Allegiant does have a 24-hour cancellation policy whereby you can cancel your flight within the first twenty-four hours of booking and get a non-refundable value toward future travel. If you are in any way confronted with the issue of cancellation of your booked flight, then there is an easy laid-down process of Allegiant Flight Cancellation Policy to guide the travelers in such circumstances. In regard to ticket cancellation, passengers are permitted to cancel through a web-based self-service by visiting the airline’s website, or they can cancel through the company’s customer care services. Although it does not refund the amount of fares back to the passengers, it provides the value of future flights. Such credits are normally registered and utilized within one year from the time of registration. Thus, before you cancel the card, always make some reading on the policy so that you may understand whether one is charged for cancellation or not.