United Airlines operates out of the South Satellite Terminal at Seattle-Tacoma International Airport (SEA). Modern amenities including comfortable seats, charging stations, and passenger-focused dining options are available at this United Airlines SEA Terminal .Passengers can enjoy a more peaceful environment in the United Club lounge, which also provides free food, drinks, and Wi-Fi for eligible members. Connecting to other aircraft is also made easy by the terminal's efficient design. SEA's shuttle system makes it simple for travelers flying with United to go about the airport and facilitates quick transfers.