United Airlines operates from Terminal 2 at San Diego International Airport (SAN), offering passengers a smooth and efficient travel experience United Airlines SAN Terminal ensures comfort and convenience for both domestic and limited international flights, Check-in is quick and well-organized, with clear signage guiding travelers to their gates. The terminal provides free Wi-Fi, dining spots, retail stores, and a calm atmosphere. Eligible passengers can relax at the United Club Lounge near Gates 47–48. With reliable service and modern amenities.