San Diego International Airport (SAN), formerly known as Lindbergh Field, is rather a small airport located northwest of Downtown San Diego. San Diego International Airport has three terminals:
Commuter Terminal Airlines – American Eagle (Los Angeles), SeaPort Airlines, SkyWest Airlines (Los Angeles), United Express (Los Angeles)
Terminal 1 Airlines – Alaska Airlines (Horizon Airlines), Southwest Airlines
Terminal 2 Airlines – Air Canada, Allegiant Air, American Airlines, British Airways, Delta Air Lines, Delta Connection (Salt Lake City), Frontier Airlines, Hawaiian Airlines (Terminal 2 East), Japan Airlines, JetBlue Airways, Spirit Airlines, Sun Country Airlines, United Airlines, US Airways, US Airways Express (Mesa Airlines), Virgin America, Volaris, WestJet
As of 7/13/2020, Delta Air Lines and Southwest Airlines are handling the COVID-19 pandemic the best. They are blocking middle seats and/or allowing free flight changes.