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Checking in for your Frontier flight

Check in online, add any bags before you go, and know the cutoffs — that's most of a smooth Frontier departure, and it keeps the cost down. Here's what to do and when, plus a number to call if anything won't go through.

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    How Frontier check-in generally works

    General timings. Exact windows depend on the airport and whether your flight is domestic or international.

    Online and app check-in:

    Frontier check-in on flyfrontier.com and the Frontier app generally opens 24 hours before departure and closes a set time before the flight. It's the easiest way — and adding bags here is cheaper than at the counter.

    Airport counters and bag drop:

    If you're checking a bag or need documents verified, use the counter or kiosk. Frontier's counters keep limited hours at some airports, so check when they open and arrive with time to spare.

    Boarding is by group:

    Frontier boards in numbered groups and closes boarding several minutes before departure — the gate can close earlier than you'd expect. Being there early matters, especially with a carry-on.

    Documents for international travel:

    For flights to Mexico, Central America and the Caribbean, your passport, visas and entry requirements are your responsibility and are checked before boarding. Verify them well ahead.

    Have everything on your fare ready:

    Because Frontier prices bags and seats separately, sort them before you reach the airport — adding them at the gate is the most expensive and slowest option.

    Check-in and boarding cutoffs vary by airport, route and aircraft, and Frontier has no phone line to call with a question. If online check-in fails or a document issue comes up, call us and we'll help you sort it before you travel.

    Your check-in timeline

    General timings — always confirm the exact windows for your airport and route.

    Online / Frontier app
    Opens ~24h before departure; closes a set time before the flight
    Airport counter / kiosk
    For checked bags and document checks — counters can keep limited hours
    Boarding
    By numbered group; closes several minutes before departure
    International
    Allow extra time for documents and security

    Before you leave for the airport

    A quick pre-flight check that prevents most day-of problems — and extra charges.

    • Check in online and save the mobile boarding pass
    • Add any bags online now — the gate is the most expensive place
    • Confirm passport, visa and entry requirements for international routes
    • Know your bag drop and boarding cutoffs for the airport

    If online check-in won't accept you, it's often just an international document check or ticket condition — usually you simply check in at the airport. With no Frontier phone line, call us and we'll confirm why so there's no surprise at the counter.

    Frequently asked

    When does Frontier check-in open and close?+
    Online check-in generally opens 24 hours before departure and closes a set time before the flight; airport cutoffs are earlier for international flights. Tell us your route and we'll give you the safe times to aim for.
    Online check-in won't accept me — what now?+
    It happens with certain international itineraries, document checks or ticket conditions, and with no Frontier phone line it's frustrating. It usually just means checking in at the airport — call us and we'll confirm why and what to do.
    How early should I get to the airport?+
    For international Frontier flights, arrive well ahead to allow for bag drop, security and document checks; even domestically, give yourself margin since Frontier counters can have limited hours. When in doubt, earlier is safer.
    Do I need to print a boarding pass?+
    Usually a mobile boarding pass in the Frontier app is fine, but some airports still want a printed copy, and a printed pass can help you avoid an airport-printing charge. If you're unsure for your route, ask us.

    Contact options

    Reach Frontier directly, or let us handle it.

    Contact Frontier Airlines directly

    The airline's own official channels — free.

    Websiteflyfrontier.com
    SupportOnline & chat at flyfrontier.com
    AppFrontier app

    Or let a BargainAirTicket agent do it

    Independent · 24/7 · English & Español · service fee applies.

    +1 (833) 667-2918
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    More Frontier Airlines help

    Related guides.

    Full Frontier Airlines guide Baggage policy Flight status Seats & upgrades

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