We try to get there 1 1/2 -2 hrs before. Then we can just relax, get something to eat. The last time we flew out of Green, we parked in the multi-level garage to the side of the terminals. At the time it was less than $100 to park for a week, but someone told me it has gone up. But, it is very convienient to the terminals, and is covered(nice in the winter). This airport is extremely easy to use and to around in. We love it.