| - Illinois Valley Regional-Walter A Duncan Field Airport
FAA / IATA Airport Code: VYS
Peru, IL
- Whiteside County-Joseph H. Bittorf Field
FAA / IATA Airport Code: SQI
Sterling-Rock Falls, IL
- Aurora Municipal Airport -- also ARR
FAA / IATA Airport Code: AUZ
Chicago-Aurora, IL
- Rockford, IL - Greater Rockford
FAA / IATA Airport Code: RFD
Rockford, IL
- Rockford, IL
FAA / IATA Airport Code: ZRF
Rockford, IL
- Val Galder Bus Terminal
FAA / IATA Airport Code: ZRK
Rockford, IL
- Dupage Airport
FAA / IATA Airport Code: DPA
Chicago (West Chicago), IL
- Albertus Airport
FAA / IATA Airport Code: FEP
Freeport, IL
- Peoria, IL - Greater Peoria Airport
FAA / IATA Airport Code: PIA
Peoria, IL
- Clinton Municipal Airport
FAA / IATA Airport Code: CWI
Clinton, IA
- Moline, IL - Quad City Airport
FAA / IATA Airport Code: MLI
Moline, IL
- Davenport Municipal Airport
FAA / IATA Airport Code: DVN
Davenport, IA
- Normal Airport
FAA / IATA Airport Code: BMI
Bloomington, IL
- Schaumburg Marriott Heliport
FAA / IATA Airport Code: JMH
Chicago-Schaumburg, IL
- Galesburg, IL - Galesburg Municiple Airport
FAA / IATA Airport Code: GBG
Galesburg, IL
- Chicago, IL - O'hare International Airport
FAA / IATA Airport Code: ORD
Chicago, IL
- Greater Kankakee Airport
FAA / IATA Airport Code: IKK
Kankakee, IL
- Rock County Airport
FAA / IATA Airport Code: JVL
Janesville, WI
- Chicago, IL - Midway
FAA / IATA Airport Code: MDW
Chicago, IL
- Margny
FAA / IATA Airport Code: XCP
Compiegne, IL
- Chicago, IL - Pal-Waukee Airport
FAA / IATA Airport Code: PWK
Chicago, IL
- Lake Geneva Aire Estates Airport
FAA / IATA Airport Code: XES
Lake Geneva, WI
- Meigs Field Airport
FAA / IATA Airport Code: CGX
Chicago, IL
- Gary, IN
FAA / IATA Airport Code: GYY
Gary, IN
- Muscatine Municipal Airport
FAA / IATA Airport Code: MUT
Muscatine, IA
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