The last time I parked at Indy it was $5.50 for the economy lots and $7 for the Tiger (closer) lots. This has been about 18 months ago because now we have discovered Park & Fly ( I don't think the rates have changed). We stay at the Radisson and can leave the car for free up to a week, and it is soooo convenient. We always take early flights and are an hour and a half from the airport. So nice to walk out the back door of the hotel and be in the airport!