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Cheap flights from Seattle (BFI) to Chicago (CHI)

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How to find the cheapest flight from Seattle (BFI) to Chicago (CHI)

How to find the cheapest flight from Seattle (BFI) to Chicago (CHI)
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How to find the cheapest flight from Seattle (BFI) to Chicago (CHI)
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How to find the cheapest flight from Seattle (BFI) to Chicago (CHI)
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Cheap flights from Seattle to Chicago in September , October 2026

28 Sep - 29 Oct $ 771.00
BFI
Seattle
Air Excursions
2 STOPS
CHI
Chicago
CHI
Chicago
Air Excursions
2 STOPS
BFI
Seattle
Pick dates
28 Sep - 27 Oct $ 771.00
BFI
Seattle
Air Excursions
2 STOPS
CHI
Chicago
CHI
Chicago
Air Excursions
2 STOPS
BFI
Seattle
Pick dates
28 Sep - 20 Oct $ 771.00
BFI
Seattle
Air Excursions
2 STOPS
CHI
Chicago
CHI
Chicago
Air Excursions
2 STOPS
BFI
Seattle
Pick dates

Last minute flights from Seattle to Chicago

28 Sep - 01 Oct $ 1,001.00
BFI
Seattle
Air Excursions
2 STOPS
CHI
Chicago
CHI
Chicago
Air Excursions
2 STOPS
BFI
Seattle
Pick dates
28 Sep - 01 Oct $ 1,080.00
BFI
Seattle
Air Excursions
2 STOPS
CHI
Chicago
CHI
Chicago
Air Excursions
2 STOPS
BFI
Seattle
Pick dates
28 Sep - 01 Oct $ 1,080.00
BFI
Seattle
Air Excursions
2 STOPS
CHI
Chicago
CHI
Chicago
Air Excursions
2 STOPS
BFI
Seattle
Pick dates

One-way flights to Chicago from Seattle

5:25 AM - 8:55 PM
Frontier Airlines
2 Stops
16h 58m
BFI - CHI
$ 505
Kiwi
Pick dates
8:05 PM - 8:55 PM
Frontier Airlines
2 Stops
26h 18m
BFI - CHI
$ 539
Kiwi
Pick dates
8:05 AM - 8:55 PM
Frontier Airlines
2 Stops
14h 18m
BFI - CHI
$ 584
Kiwi
Pick dates

How to find the cheapest flight from Seattle (BFI) to Chicago (CHI)

Related info for your journey
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How to find the cheapest flight from Seattle (BFI) to Chicago (CHI)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Seattle (BFI) to Chicago (CHI)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.