United Airlines uses Terminal 3 for its location within San Francisco International Airport (SFO). It is a United Airlines SFO Terminal contemporary terminal with the latest comforts in dining and shopping, besides being comfortable to sit and relax. United Airlines has checked-in counters, security checkpoints, and boarding gates in Terminal 3, where both domestic and international flight operations are carried out. The terminal also offers easy access to the AirTrain system, providing smooth connections to other terminals, parking, and rental car facilities. Travelers experience a convenient and efficient airport experience with United at SFO.