Three terminals at San Diego International Airport (N. Harbor Dr., San Diego, www.san.org ) provide easy access to Southern California. (They somehow managed to squeeze the runways in right downtown by the ocean, making it incredibly convenient for visitors to the seaside city.) Long- and short-term parking is available by the hour or day.
The Flyer Route No. 992 metro bus (http://transit.511sd.com , 5 a.m.–12:50 a.m., $2.25) stops downtown and connects with the San Diego Trolley, Coaster, and Amtrak. Note that the Trolley does not connect directly to the airport.