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Cheap flights to Illinois, United States

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Cheap flights found on Fly.com within the past 48 hours(per person, including taxes and fees)

OriginDestinationPrice R/TDatesAirline
ClevelandCLEtoChicagoORD$9510/16 - 10/19Frontier Airlines
Kansas CityMCItoChicagoORD$9512/04 - 12/08Spirit Airlines
MinneapolisMSPtoChicagoORD$9509/10 - 09/13Spirit Airlines
Washington, DCIADtoChicagoORD$10512/03 - 12/06Frontier Airlines
TrentonTTNtoChicagoMDW$11510/25 - 10/27Frontier Airlines
DecaturDECtoChicagoORD$12209/12 - 09/21Air Choice One
AtlantaATLtoChicagoORD$12510/24 - 10/28Frontier Airlines
DenverDENtoChicagoMDW$14511/11 - 11/15Frontier Airlines
DallasDFWtoChicagoORD$15509/10 - 09/17Spirit Airlines
BostonBOStoChicagoORD$15509/13 - 09/17Spirit Airlines
New OrleansMSYtoChicagoORD$15511/04 - 11/18Spirit Airlines
BaltimoreBWItoChicagoORD$16509/13 - 09/20Spirit Airlines

Cheap Roundtrip Fares to Chicago from:(per person, including taxes and fees)

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Cheap Flights to Illinois