Can I change a flight with Frontier Airlines? Passengers can easily change and reschedule their flights by following the guidelines given under the Frontier Flight Change Policy . According to this policy, travelers get alternate flying options or the choice of standby travel depending upon availability. You can only make changes to your booking if you have the correct details on your ticket and you will need to make the changes at least a week prior to the original departure date. In case you are making the changes 60 days or more from the scheduled departure you can do it for free, but after that certain fee may incur. You can also do it for free if you are doing it within 24 hours of booking.