Chicago Approach Control Frequencies
- 135.07 West Feeder (ORD)
- 128.45 West Arrival (ORD)
- 124.35 East Feeder (ORD)
- 119.0 East Arrival (ORD)
- 124.35 Arrival (ORD)
- 135.02 Arrival (ORD)
- 128.57 Arrival (ORD)
- 126.05 Arrival (ORD)
- 118.92 Arrival (ORD)
- 133.5 South Satellite Sector 3 (MDW ARR DPA)
- 119.35 Sector 2 South Satellite (MDW JOT LOT)
- 118.4 Sector 1 South Satellite (MDW)
- 127.87 Sector 4 South Satellite (MDW CGX GYY)
- 132.75 South Satellite
- 133.1 South Satellite
- 124.42 South Satellite
- 125.0 East Departure (ORD)
- 124.7 West Departure (ORD)
- 127.4 South Departure (ORD)
- 132.3 North Departure (ORD)
- 120.55 North Satellite (PWK UGN 3CK)
- 126.8 VFR Advisories
Local Tower Frequencies
- 126.9 ORD North Local
- 120.75 ORD South Local
- 132.7 ORD Local 3
- 121.9 ORD Inbound Ground
- 121.75 ORD Outbound Ground
- 121.6 ORD Ground Meetering
- 121.75 ORD Clearance Delivery
- 118.7 MDW Local
- 119.45 MDW Class C