United Airlines’ operations at SFO center around Terminal 3 and International Terminal G, both designed to support a comfortable travel experience. Terminal 3 offers quick check-in options, easy security access, and plenty of restaurants and retail choices. The United Airlines SFO Terminal bright, open design helps reduce stress before flying. International Terminal G handles United’s long-haul departures, featuring modern customs areas and large boarding gates. The AirTrain connects both terminals for effortless movement. With thoughtful services and strong connectivity, United passengers enjoy a well-organized journey through San Francisco International Airport.