Or get a CAA membership and park at an park n fly parking lot. Use the CAA card to get the membership discount on return. I did this last time(at YYC where I fly out of all the time) and got a whooping 35% discount. (25% special discount offer by park n fly + 10% discount via CAA membership) Saved me a bunch of $ when I parked my truck for a week when I flew to Atlanta earlier this year.

Sanosuke!