The question What terminal is United Airlines at SAN refers to the specific terminal used by United Airlines at San Diego International Airport (SAN). United Airlines operates out of Terminal 2 at SAN, where passengers can check in, go through security, and board their flights. The “What terminal is United Airlines at SAN” query helps travelers quickly locate the correct terminal for their flight, ensuring a smooth journey through the airport. Terminal 2 at SAN is equipped with various services, including dining options, shops, and United’s customer service counters, making it a convenient location for passengers flying with United Airlines.