Popular Articles

  1. How do I change my flight time or date?

    Last Updated: 05/28/2025 in Change & Cancel Policies
    You can change your departure time or date through the Frontier website or mobile app. On the website: • Go to  My Trips/Check-In • Enter your  Last Name  and  Confirmation Code • Click  Search • Select  Change Flights  and follow the...

  2. How do I add my Known Traveler Number (KTN) to my reservation?

    Last Updated: 03/15/2023 in Airport Information
    Enter your Known Traveler Number (KTN) when you book your flight on flyfrontier.com. This can be done on the Passenger Information page during the booking process.  Forgot to add your Known Traveler Number (KTN) when you booked?  No wo...

  3. I am experiencing a website or app error, what should I do?

    Last Updated: 03/14/2023 in Contact Us
    Website or mobile app technical problems are frustrating.    If you are on the website ( flyfrontier.com ) try the following:   Make sure you are connected to the internet   Clear the website cache & browser history   Restart t...

  4. What is the difference between a personal item and a carry-on?

    Last Updated: 10/27/2022 in Bags and Seats Bags & Seats General Info
    Personal item : It cannot be larger than 14"H, 18"W, 8"D. These are usually purses, totes, computer bags, briefcases, small backpacks and diaper bags! This b ag must be no larger than 14”X18”x8”. Carry-on bag : Your carry-on bag must be able ...

  5. What is included in my fare?

    Last Updated: 02/06/2024 in My Booking Fares & Payment
    Our fares include: 1 Personal Item Change or Cancel option (will require a fee + fare difference) Same Day Confirmed Flight option (will require a fee ) Ticket Transfer option (might require a fee + fare difference) Interested in addin...

  6. May I bring medicine and/or medical devices on the plane?

    Last Updated: 06/04/2025 in Special Services
    Yes. You are allowed to bring both medicine and medical devices on board. Medicine should always  be packed in your carry-on bag, not in checked luggage. This ensures you have access to it during the flight and protects it from temperature cha...

  7. How do I get FRONTIER Miles credit for a flight I've already taken?

    Last Updated: 01/09/2024 in FRONTIER Miles
    If travel was completed in the last 180 days, you may receive credit by logging into your account online and clicking the “Add Trips” button. Check your FRONTIER Miles account online to be sure your recent flights were not posted. Please note...

  8. How do I use a Voucher ?

    Last Updated: 02/14/2023 in Vouchers
    To use a voucher, simply book your new flight on FlyFrontier.com. Once you reach the payment screen, select " Frontier Voucher " and enter the voucher number. Please Note Vouchers are not redeemable for cash. Vouchers are valid for 90 d...

  9. How does Kids Fly Free Work?

    Last Updated: 07/14/2020 in Discount Den
    By joining our Discount Den® fare club, you not only get access to the lowest available fares, but now o n valid Kids Fly Free flights, one kid under 15 can fly for free for every adult Discount Den® fare purchase. Find more information on our...

  10. What should I expect if Frontier cancels or changes my flight?

    Last Updated: 09/04/2024 in Change & Cancel Policies
    There are times that Frontier will have to cancel or make changes to a flight. These changes or cancellations can happen for many reasons and are handled with care because we realize there may be impacts to our customers.  In the event, you...