Short term parking is the most convenient. If you park on level 5, you can usually park right next to the elevator to the terminal. For less than 24 hours, it will cost $25.00 (despite the web site posted rate of $22). I would avoid the airport long term parking--infrequent buses and the same cost as the private parking lots. If you are coming from the south, you can use Anza Park and Fly. About $12/day and they have pretty good bus service (my travel agent provides coupons for a $9/day rate). From the north, there are several alternatives such as Park and Fly--all at about $12/day. Although I have never used them because I usually come from the south, SkyPark seems to have the most frequent buses: They give a discount to AAA members and they have some deluxe services such as washing your car.