The main base of operations for Southwest Airlines is San Diego International Airport's Terminal 1 (SAN). Southwest Airlines oversees a number of gates in Terminal 1, guaranteeing seamless boarding Southwest Airlines SAN Terminal for both domestic and international flights. The terminal has facilities such as restaurants, shops, and cozy seats for travelers. Southwest is a major airline for passengers at SAN since it offers nonstop service to a number of locations. Because Terminal 1 might grow crowded during periods of high travel demand, passengers are advised to check flight information and leave enough time for security checks.