If you are really looking to save some money, I would suggest to try searching flights leaving from Seattle. Even with parking the car for the week, we saved a TON of money flying out of Seattle. I was able to find a flight last December from Seattle to SNA for $250.00 each including taxes. I can't remember if you mentioned when you wanted to go, but Virgin Airlines is offering a lot of $79.00 each flight from SEA to LAX. With tax you can get a return ticket for $179.00 including tax as far as I can see. If you can't find any good flights that fit your schedule with Virgin, keep trying other sites from Seattle. Or even if you can get a good flight from Bellingham. It's close to the border. The only thing is that they all stop in Seattle, so you might have to wait there for a bit to change planes.
Anyways, hope this helps.
Spacemouseneer