Allegiant Air generally does not offer refunds if you cancel your flight, as most of their tickets are non-refundable. However, there are a few exceptions. If you cancel your flight within 24 hours of booking, you may be eligible for a full refund, provided the reservation was made at least 7 days before the scheduled departure. Additionally, if Allegiant cancels your flight or makes significant schedule changes, you may be entitled to a refund or travel credit. In certain cases, such as medical emergencies, Allegiant may consider refund requests on a case-by-case basis. To determine your specific refund eligibility and to discuss your options, you can call +1-888-826-0067 to speak with an Allegiant representative.