Can I Cancel My Allegiant Flight Without a Penalty?

Yes, Allegiant Air allows you to cancel your flight under specific conditions. To avoid penalties, cancellations must be made within the 24-hour booking window and at least 7 days before the departure date. If your cancellation falls outside these parameters, you may incur fees. For the most accurate information and to initiate a cancellation, visit Allegiant’s official website or contact their customer support.

Source: https://central.xero.com/s/question/0D58V00009Mq6vQSAR/can-i-cancel-my-allegiant-flight-without-a-penalty