Traveling through San Francisco International Airport (SFO) with Frontier Airlines? Whether you’re a frequent flyer or flying Frontier for the first time, knowing your terminal, check-in procedures, baggage policies, and amenities can make your experience much smoother. Frontier Airlines operates from Terminal 1 (Harvey Milk Terminal) at SFO, a recently modernized terminal offering enhanced passenger services, streamlined security, and plenty of dining and shopping options.
If you’re wondering where to check in, drop off your bags, or find your departure gate, this comprehensive guide will walk you through everything you need to know about flying with Frontier Airlines at SFO. For more details on terminal services, directions, and policies, visit the Frontier Airlines SFO Terminal.
Which Terminal Does Frontier Airlines Use at SFO?
Frontier Airlines operates from Terminal 1 (Harvey Milk Terminal) at San Francisco International Airport. This terminal is known for its modern infrastructure, efficient security screening process, and excellent passenger amenities. Whether you need to check in, grab a quick meal, or relax before your flight, Terminal 1 provides a comfortable experience.
If you're connecting to another flight at SFO, the AirTrain (SFO’s free airport transit system) connects Terminal 1 to other terminals, parking garages, rental car services, and BART (Bay Area Rapid Transit) for easy transfers.
1. Online Check-In
For the fastest check-in experience, Frontier allows passengers to check in online via their website or mobile app. Online check-in opens 24 hours before departure and allows you to:
✔ Select your seat
✔ Pay for baggage in advance (if needed)
✔ Print or download your boarding pass
2. Airport Check-In at SFO Terminal 1
If you need to check in at the airport, head to the Frontier Airlines check-in counters located in Terminal 1. Passengers checking baggage must visit these counters at least:
- 60 minutes before domestic flights
- 90 minutes before international flights
To avoid long lines, it’s always best to check in online before arriving at the airport.
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