Most flights to San Diego International Airport-Lindbergh Field are domestic. The airfield sits just 3 miles west of Downtown; plane-spotters will thrill watching jets come in over Balboa Park for landing. Coming from overseas, you’ll likely change flights – and clear US customs – at one of the major US gateway airports, such as LA, San Francisco, Chicago, New York or Miami.
The standard one-way fare between LA and San Diego is about $100 and takes about 35 minutes; unless you’re connecting through LA, you’re usually better off driving or taking the train.
To/from other US cities, flights to San Diego are generally up to about $120 more expensive than those to LA. All major US airlines serve San Diego, plus Air Canada, British Airways, Japan Airlines, Mexico's Volaris and the Canadian carrier WestJet.