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Ultra Low Fare Flights from Boston (BOS) to Chicago (ORD) with Spirit

Fly Boston to Chicago and Save Big

*Fares presented below are available at the beginning of each day, but may sell out. Additional baggage fees and fees for other services may apply. Other terms and conditions may apply.

Ultra Low Fare Flights from Boston (BOS) to Chicago (ORD) with Spirit

Weather in Chicago

Monday ,moderate rain
62°F 10/21/2019
Tuesday ,light rain
50°F 10/22/2019
Wednesday ,moderate rain
52°F 10/23/2019
Thursday ,scattered clouds
45°F 10/24/2019
Friday ,sky is clear
43°F 10/25/2019
Saturday ,sky is clear
49°F 10/26/2019
Sunday ,sky is clear
53°F 10/27/2019
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