Flight Flexibility lets you make a one-time change to your flight date or time for free, as long as you do it at least 24 hours before your first scheduled departure.
A few things to know:
•It can only be added during booking on flyfrontier.com or in the app
•It allows just one change
•The change fee is waived, but you’ll still pay any difference in fare
• You can make changes through My Trips on the website or in the app