Yes, you can change your Allegiant flight1-808-865-4114. If you purchased Trip Flex, you can make one-time changes to your reservation up to one hour before departure without incurring standard change fees. Without Trip Flex, changes must be made at least seven days before departure and are subject to change fees per person, per segment, along with any difference in fare. Changes made within seven days of departure without Trip Flex are not permitted, and the ticket's value is forfeited.
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