Frontier Airlines Check-In Guide
Online check-in, airport deadlines, and boarding times for Frontier Airlines (F9).
Check in online
Online check-in opens 24 hours before departure. Skip the line by checking in on your phone or computer.
Check in on Frontier AirlinesOnline check-in opens24 hours before departure
Domestic check-in closes60 minutes before departure
International check-in closes60 minutes before departure
Domestic bag drop closes60 minutes before departure
International bag drop closes60 minutes before departure
Boarding door closes20 minutes before departure
Mobile boarding pass
Store your pass in Apple Wallet or Google Pay.
Airport kiosk check-in
Self-service kiosks available at most airports.
- Frontier enforces a stricter 60-minute check-in cutoff for ALL flights (since August 2023) — earlier than most US carriers.
- Miss the cutoff and your ticket is automatically cancelled as a No-Show with no rebooking.
- Boarding gate closes 20 minutes before departure — earlier than the major-3 carriers.
- Check in online to lock in your seat and speed up the airport experience.
- International flights usually require arriving 2-3 hours before departure.
- If checking bags, arrive early enough to beat the bag drop cutoff.
- Boarding typically begins 30-45 minutes before departure.
- Boarding doors close 20 minutes before departure — missing the cutoff means missing the flight.