Thumb Score: +22

There are a couple of promotional codes on Groupon for airport parking. I did the best to list major cities. Check your airport location and see if you can score a deal for airport parking this summer.

Atlanta (ATL)[INDENT]3, 5, or 7 days of hassle-free parking at The Parking Spot (ATL) [groupon.com] use code: PARKING
2, 4, 6, or 10-Day ATL Airport Outdoor Parking, Up To 35% Off [groupon.com] use code: SUMMER