Frontier Airlines flight check-in
United States
Quick answer
Frontier Airlines online check-in opens 24 h before departure and closes 1 h before departure. Online check-in is free.
| Online check-in opens | 24 h before departure |
|---|---|
| Online check-in closes | 1 h before departure |
| Airport counters close | 1 h before departure |
| Check-in fee | online check-in is free |
| Boarding pass | mobile boarding pass, print at home |
| Mobile app check-in | available |
Times apply to most routes; long-haul, US and some airport-specific deadlines differ. Confirm on the official website before travelling.
How online check-in works
1
Open the airline website or app and enter your booking code and last name
Online check-in
Booking codeA1B2C3
Last nameSMITH
Continue
2
Pick a seat and confirm your travel details
Select your seat
Confirm
3
Download or print your boarding pass
Boarding pass
SMITH / JOHN14A
Online check-in for Frontier Airlines opens 24 hours before your flight departure and closes 60 minutes before departure for both domestic and international flights. Check-in is available through flyfrontier.com and the Frontier mobile app at no charge.
Steps to check in online:
- Visit flyfrontier.com or open the Frontier mobile app
- Enter your confirmation number and last name
- Review and confirm your passenger details and flight information
- Select your seat (if not already assigned)
- Add any last-minute baggage or services if needed
- Complete check-in and download your boarding pass
Practical tip: Check in as soon as the 24-hour window opens to secure the best available seat options, especially on popular routes.
What if I need to check baggage after online check-in?
If you purchased checked baggage during booking or at check-in, you may drop it at Frontier's bag drop counters at the airport. These counters close 1 hour before departure, so arrive with sufficient time to complete bag drop before online check-in closes at 60 minutes before departure.
Can I check in at the airport if I prefer not to use online check-in?
Yes. Frontier Airlines offers check-in and bag drop counters at the airport. However, be aware that counter check-in may incur additional fees not present with online check-in. Counters close 1 hour before departure, so arrive early to allow adequate time.