Allegiant Air cancellation policy （＋１ ８４４ ６０４ ２９４４）provides several ways of canceling a booking. For instance, one may choose to visit (www.allegiantair.com) to cancel their booking. Kindly navigate the website and click on the cancel flight option. Another option is to contact customer care to request for assistance. Feel free to call（＋１ ８４４ ６０４ ２９４４） for immediate assistance. However, you must note that Allegiant air cancellation fees. The airline will subtract the service charge from the booking fees that have already been paid.