Here's some information to help you get to and around your beach accommodation in El Cajon more easily: Make your way to El Cajon with a flight to San Diego, CA (SEE-Gillespie Field), the closest major airport which is located 2.2 mi (3.6 km) from the city center. You can take advantage of metro transit at El Cajon Transit Center Station, Arnele Avenue Station, and Gillespie Field Station.