Once you've successfully cancelled your flight, Allegiant Airlines will issue a confirmation email detailing the cancellation and any applicable refund or credit information. Keep this email for your records. If you encounter any issues or have questions post-cancellation, don't hesitate to reach out to Allegiant Airlines' customer service for further assistance. 8. Rebooking Options In cases where Allegiant Airlines initiates a schedule change or cancels a flight, passengers may be entitled to a full refund or rebooking options without penalties. It's advisable to monitor your flight status regularly and stay informed of any updates or notifications from Allegiant