Flying United from SFO? Here’s What to Expect at the United Airlines Terminal
The SFO United Airlines terminal offers a seamless and modern travel experience for passengers flying with United at San Francisco International Airport. United primarily operates out of Terminal 3 and the International Terminal (Boarding Area G), both of which are designed to provide efficient check-in, security screening, and a wide array of passenger services. Terminal 3, United’s main domestic hub at SFO, is equipped with advanced self-service kiosks, spacious gate areas, and numerous dining and shopping options, making it a preferred terminal for frequent flyers. For international flights, United utilizes Boarding Area G in the International Terminal, where travelers can enjoy expedited customs, luxurious United Polaris lounges, and direct access to global destinations. Whether departing, arriving, or connecting, travelers using the SFO United Airlines terminal benefit from world-class amenities and excellent connectivity across the airport’s transit systems.
Which Terminal Does United Airlines Use at SFO?
The SFO United Airlines Terminal is primarily Terminal 3, with some international flights operating from the International Terminal G (Concourse G). Terminal 3 serves as a major domestic hub for United Airlines and is one of the most modern and well-equipped terminals in the country.
If you’re flying domestically with United, your flight will almost always depart from Terminal 3. For international flights, especially those operated by United and its Star Alliance partners, you may check in at Terminal 3 and then depart from gates in Concourse G of the International Terminal.
Check-In and Baggage Services
United Airlines offers a variety of check-in options at SFO, including:
Self-service kiosks
Mobile check-in via the United app
Full-service counters for baggage drop-off and special assistance
Terminal 3 features a spacious check-in hall with clearly marked United Airlines counters, including dedicated Premier Access lanes for elite members and business class travelers. For domestic flights, it’s recommended to arrive at least 2 hours early, and 3 hours for international travel.
Security Screening and TSA PreCheck
The SFO United Airlines Terminal includes multiple TSA security checkpoints to handle high passenger volumes efficiently. TSA PreCheck lanes are available for eligible travelers, helping reduce wait times significantly.
Once through security, you’ll find a range of amenities and signage directing you to your gate. Terminal 3 is connected to the International Terminal via an airside walkway, which means you can transfer between terminals without going through security again — a major benefit for international connections.
United Club and Polaris Lounge
United passengers have access to several premium lounge options at SFO:
United Club: Located near Gates E4 and F11 in Terminal 3, and also in the International Terminal (G). These lounges offer comfortable seating, complimentary snacks and beverages, Wi-Fi, and a relaxed atmosphere.
United Polaris Lounge: Located in the International Terminal G, this premium lounge is exclusively for United Polaris business class passengers and features upscale dining, showers, and workspaces.
Dining and Shopping at Terminal 3
The SFO United Airlines Terminal is known for its excellent food and shopping options. Whether you want a quick snack, gourmet coffee, or a full sit-down meal, Terminal 3 has something for every traveler.
Popular restaurants include:
Napa Farms Market
Boudin Bakery
Klein’s Deli & Coffee Bar
Green Beans Coffee
Shops and services include:
Hudson News
San Francisco Travel Store
Tech Showcase
There are also art exhibits and plenty of charging stations located throughout the terminal, allowing you to relax or work while you wait.
Ground Transportation and Parking
Getting to and from the SFO United Airlines Terminal is simple. Terminal 3 is directly accessible via the airport’s AirTrain, which connects all terminals, parking garages, the BART station, and the Rental Car Center.
If you’re driving, there are parking garages close to Terminal 3. Rideshares, taxis, and public buses also serve the terminal with dedicated pickup and drop-off areas.
Final Thoughts
The SFO United Airlines Terminal at San Francisco International Airport offers travelers a modern, efficient, and comfortable experience. From check-in to boarding, United’s presence at Terminal 3 ensures that passengers have access to top-tier amenities, helpful staff, and seamless connections—especially for those traveling domestically or connecting internationally.