Q: Or is using the on-site parking your only option if you don't want to take a shuttle?
A: I just came from Sacramento airport on Tuesday and did not see any off site parking. We parked at the airport in the economy lot which is the first lot you come to on your right as you start to get to the airport.. We paid $54 for 5 nights there in the economy parking lot. The economy parking lot has a shuttle(free) that takes you to your terminal. It comes around every 15 minutes. We did not have any wait at all for this shuttle. I find the Sac airport so much easier to use then Oakland or SFO. You can pay for your parking with a credit card or debit card if you wish.