What Are My Options to Cancel My Allegiant Flight Without a Penalty?

You can cancel your Allegiant flight without penalties by utilizing their 24-hour cancellation policy. If you book your flight at least seven days before the scheduled departure, you have up to 24 hours from the time of booking to cancel and receive a full refund without paying any fees. This is a great option for travelers who may need to make last-minute adjustments to their plans.

Another way to avoid penalties is by purchasing Allegiant’s Trip Flex add-on during booking. Trip Flex allows you to cancel or make changes to your flight without paying the usual cancellation fee of $75 per passenger, provided you make these changes at least 72 hours before departure. If you cancel after the 24-hour risk-free period and did not purchase Trip Flex, the cancellation fee will apply, and the remainder will be credited for future travel.

Source: https://www.springborojuneteenth.com/forum/general-discussion/can-i-cancel-my-allegiant-flight-without-a-penalty