I know people are discouraging you about driving into the airport and using the Park n Fly (except beattyfamily) but for me the peace of mind of being at the airport (Holiday Inn) the night before, knowing my car is about as safe as it can be and being able to get back home as hasslefree as possible, it just works.Also the new tunnel to Logan from the Mass Pike makes it very painless!! We do from the Cape Cod end. Did you get any prices for Park n Fly rates? I have never used Priceline but my understanding is that you cannot use them for Park n Fly. I also am not willing on a vacation to chance where I wind up.....the travel part is not so much fun anyways and I like to make it as easy as possible.