Can I cancel my Allegiant flight without a penalty? Allegiant offers free cancellation within 24 hours of booking if the flight is at least a week away. To cancel within this timeframe, contact Allegiant at +1-8/6/6-884-3315 (USA) or +52 (55) 7100 2030 (UK). Cancellation Fees: After 24 hours, a cancellation fee will apply. https://us.community.sony.com/s/question/0D5Dp00002ARxdpKAD/aayflight-can-i-cancel-my-%F0%9D%96%A0%F0%9D%97%85%F0%9D%97%85egiant-flight-without-a-penalty-cancellationpolicy-?language=en_US