I'm heading out in about 10 days to Salt Lake to visit my brother, and decided to get a cheap flight with Sun Country. Unfortunately, my return flight doesn't get into MSP until almost 10 pm. There's no way I am going to drive 2 1/2 hours up to Duluth at that hour so I figured I'd get a hotel that night. Plus it allows me to do a Trader Joe's run the next day. :-)
Usually I take the shuttle (which would have cost me around $120 RT), but since I was spending the night (and wanted to stop at TJ's), I needed my car. I checked on the Minneapolis subreddit for parking options, and spotted a few posts about Park Sleep Fly. This allows you to book a hotel room and also lets you park your car there while you're gone all for the one price.
When I went to the site, there were at least 50 hotels in the MSP area, ranging in price from budget to pricey. I wound up going with a Holiday Inn about 7 miles from the airport. It has airport shuttle service and I can park my car there for the 6 days I am gone. All I had to do was input the date I would start parking, and whether I wanted to stay at the beginning of my trip or the end, and then the departure date.
The total price for the one night stay and 6 days of parking was $167, including taxes and fees (and is completely refundable). Parking at the lowest-priced off-airport lot would have cost me $98 for 6 days, and I would have still had to pay for a hotel. The reviews on Reddit from those who have used it are excellent. It looks like they offer this in all major cities and airports in the US and also Canada.
I'll come back and let you know how it went, but it seems like a great option.