There are parking facilities close to all terminals at Chicago O'Hare Airport. Additionally there are Long Term parking lots which can be reached by the ATS transfer train.
The Parking information line is (773) 686-7530.
There is a large multi-level parking garage in front of Terminal 2 and additional surface parking lots - Lot B close to Terminal 1 and Lot C near Terminal 3.
The parking garage offers Hourly, Daily and Valet Parking options. Hourly Parking is available on Level 1 and is intended primarily for dropping off and picking up passengers. Valet Parking is also available on Level 1 and is a quick and convenient option but at a price.
Daily Parking is available on Levels 2-6.
Terminal 5, the International Terminal, has its own parking area - Lot D. It is intended for short term parking. For longer stays use Lot E.
Economy Parking lots E and G are intended for longer stays and long term parking. Transportation to/from Lot E is by the ATS people mover.
Parking for users with disabilities is available in all parking areas. More information on (773) 686-7530.
The Cell Phone Waiting Lot at O'Hare is located at Economy Parking Lot F. Exit I-190 at North Mannheim Road and follow the signs to Economy Parking F/Cell Phone Lot.
The ParkNet radio station on 1630 AM provides regular parking information for O'Hare. As you approach the airport tune in and find out.