United Airlines operates mainly from Terminal 3 at San Francisco International Airport (SFO) for domestic flights.
International flights use the International Terminal G, which is connected airside to Terminal 3.
How to Reach the Terminal
Follow these steps to reach United’s SFO operations:
- Enter Terminal 3 for domestic United flights
- Use International Terminal entrance for international departures
- Locate United check-in counters in the appropriate terminal
- Complete check-in and baggage procedures
- Proceed through security checkpoints to gate areas
Check-In & Security
United check-in counters are prominently located in Terminal 3’s ticketing hall.
International check-in facilities are available in the International Terminal.
TSA security checkpoints serve passengers heading to all United gate areas.
Departures
Domestic United flights depart from gates throughout Terminal 3’s concourses.
International departures use gates in Terminal G’s various boarding areas.
Arrivals & Baggage Claim
Domestic arrivals collect baggage in Terminal 3’s baggage claim hall.
International passengers arrive through Terminal G and clear customs there.
Airside Connections
Terminal 3 and Terminal G are connected airside, making connections between domestic and international flights convenient.
United passengers can easily transfer between terminals without having to re-clear security.
Lounges
United Club lounges operate in both Terminal 3 and Terminal G.
Polaris lounges serve international business class passengers in Terminal G.
Ground Transportation
BART rail service provides direct connections from SFO to San Francisco and the Bay Area.
Rental car facilities are accessible via AirTrain from all terminals.
