You can change your flight online or in the Frontier mobile app. Change fees may apply unless you purchased a qualifying bundle or have Elite status.
On the website:
• Go to the Frontier Airlines website
• Hover over My Trips and Travel Info and select Manage Trip
• Enter your Last Name and Confirmation Code
• Select Change Flights and follow the prompts
In the mobile app:
• Open the Frontier app
• Go to My Trips
• Tap Manage My Booking for the flight you want to change
• Select the Change Flight menu at the bottom of the screen
• Follow the prompts to complete your changes
You may need to pay a fare difference, even if no change fee applies.