How To Change A Flight On Frontier Airlines?, visit their website and navigate to the "Manage Booking" or "My Trips" area. Edit your itinerary by choosing the desired flight and following the instructions. Flight adjustments can be made up to 24 hours before departure, but penalties and pricing variances may apply. Review all terms and conditions before finalizing the modification. Contact customer support for assistance. https://www.globalflightcheck.com/how-to-change-a-flight-on-frontier-airlines/