All ActivityMost RecentMost LikesSolutionsRe: Camping Overnight at Airport Parking LotAbout 3 years ago my husband and I stayed at Chicago's O'hare airport in the Long term parking area. It cost $13/day and we had public transportation into the city. We stayed 2 nights, just basically sleeping in our B rig and touring during the day. No one bothered us and we were too tired from walking all day to notice any noise at night.