| Business | Phone |
| Chicago O'Hare Manager Ohare International Airport, Amf Ohare 60666 | (773) 686-2202 |
| Chicago O'Hare Terminal 2 Basement, Amf Ohare 60666 | (773) 686-2222 |
| Chicago O'Hare Facilities Po Box 66142, Amf Ohare 60666 | (773) 686-4604 |
| Standard Parking 10000 W Ohare Ave, Amf Ohare 60666 | (773) 686-7530 |
| Chicago O'Hare Tour Info Po Box 66142, Amf Ohare 60666 | (773) 686-2300 |