Yogi, I can't remember if you have any military benefits available. If so Camp Pendleton is probably about an hour south of the airport, at least on a good traffic day. There is a campground right on the beach and at least 40 years ago it was cheap for military and retirees. There is also the San Onofre State surf beach next to it but I don't know if they allow overnight camping. 25 years ago I lived in Ontario - about an hour east. That area can be hit and miss as far as safety and I'm sure the misses have moved in this amount of time. You also might check the Norco/Corona area for Motel 6 and other budget hotels.