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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 August , September 2026

28 Aug - 28 Sep $ 786.00
BFI
Seattle
Air Excursions
2 STOPS
CHI
Chicago
CHI
Chicago
Air Excursions
2 STOPS
BFI
Seattle
Pick dates
28 Aug - 21 Sep $ 787.00
BFI
Seattle
Air Excursions
2 STOPS
CHI
Chicago
CHI
Chicago
Air Excursions
2 STOPS
BFI
Seattle
Pick dates
28 Aug - 10 Sep $ 806.00
BFI
Seattle
Air Excursions
2 STOPS
CHI
Chicago
CHI
Chicago
Air Excursions
2 STOPS
BFI
Seattle
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Last minute flights from Seattle to Chicago

28 Aug - 01 Sep $ 946.00
BFI
Seattle
Air Excursions
2 STOPS
CHI
Chicago
CHI
Chicago
Air Excursions
3 STOPS
BFI
Seattle
Pick dates
28 Aug - 01 Sep $ 1,005.00
BFI
Seattle
Air Excursions
2 STOPS
CHI
Chicago
CHI
Chicago
Air Excursions
3 STOPS
BFI
Seattle
Pick dates
28 Aug - 31 Aug $ 1,100.00
BFI
Seattle
Air Excursions
2 STOPS
CHI
Chicago
CHI
Chicago
Air Excursions
3 STOPS
BFI
Seattle
Pick dates

One-way flights to Chicago from Seattle

2:35 PM - 11:59 PM
Frontier Airlines
2 Stops
13h 42m
BFI - CHI
$ 446
Kiwi
Pick dates
8:05 AM - 11:41 PM
Frontier Airlines
2 Stops
19h 54m
BFI - CHI
$ 454
Kiwi
Pick dates
2:35 PM - 11:59 PM
Frontier Airlines
2 Stops
13h 42m
BFI - CHI
$ 529
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.