We stayed at a Holiday Inn Express in Flint at hwy 69 & 495 for like $45 when we ent shopping in the Birch Run area through Priceline. I see that parking in the economy lot is only $6.00 a day or $36 a week. Its probably cheaper than a park and fly rate. Check betterbidding and take a look at winning bids on priceline. You could look at hotwire as well, We flew out of Pittsburgh and got a Marriott couple of times and we were able to leave our car at the hotel for free for 10 days. We are flying out of Pittsburgh again during the Christmas holidays.