If you're wondering What terminal is United Airlines at SAN?, United Airlines operates out of Terminal 2 at San Diego International Airport (SAN). The What terminal is United Airlines at SAN? question can be easily answered by noting that Terminal 2 is where passengers can check in for United Airlines flights, go through security, and board their flights. Terminal 2 at SAN is equipped with a range of amenities, including dining options, shops, and lounges, making it a convenient and comfortable choice for United Airlines travelers. visit us : https://airlineofficedetails.com/united-airlines-san-francisco-airport-terminal-sfo/