United Airlines SAN Terminal refers to the specific terminal used by United Airlines at San Diego International Airport (SAN). United Airlines operates from Terminal 2 at SAN for both domestic and international flights. Passengers flying with United Airlines will check in, go through security, and board their flights from this terminal. Terminal 2 at SAN offers a variety of amenities, including dining options, retail stores, and comfortable seating areas, providing a smooth and convenient experience for travelers flying with United Airlines at San Diego International Airport.