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Cheap flights from St Louis (STL) to Chicago (CHI)

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1 Adults (11+)
0 Children (2~11)
0 Infants (0~2)
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How to find the cheapest flight from St Louis (STL) to Chicago (CHI)

How to find the cheapest flight from St Louis (STL) to Chicago (CHI)
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How to find the cheapest flight from St Louis (STL) to Chicago (CHI)
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How to find the cheapest flight from St Louis (STL) to Chicago (CHI)
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Cheap flights from St Louis to Chicago in November , December 2026

16 Nov - 14 Dec $ 507.00
STL
St Louis
Frontier Airlines
1 STOPS
CHI
Chicago
CHI
Chicago
Frontier Airlines
1 STOPS
STL
St Louis
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16 Nov - 11 Dec $ 507.00
STL
St Louis
Frontier Airlines
1 STOPS
CHI
Chicago
CHI
Chicago
Frontier Airlines
1 STOPS
STL
St Louis
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13 Nov - 11 Dec $ 508.00
STL
St Louis
Frontier Airlines
1 STOPS
CHI
Chicago
CHI
Chicago
Frontier Airlines
1 STOPS
STL
St Louis
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Last minute flights from St Louis to Chicago

16 Nov - 01 Dec $ 613.00
STL
St Louis
Frontier Airlines
1 STOPS
CHI
Chicago
CHI
Chicago
Frontier Airlines
1 STOPS
STL
St Louis
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13 Nov - 01 Dec $ 613.00
STL
St Louis
Frontier Airlines
1 STOPS
CHI
Chicago
CHI
Chicago
Frontier Airlines
1 STOPS
STL
St Louis
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16 Nov - 01 Dec $ 619.00
STL
St Louis
Frontier Airlines
1 STOPS
CHI
Chicago
CHI
Chicago
Frontier Airlines
2 STOPS
STL
St Louis
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One-way flights to Chicago from St Louis

12:14 PM - 4:35 PM
Frontier Airlines
1 Stops
7h 1m
STL - CHI
$ 338
Kiwi
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6:00 AM - 5:32 PM
Alaska Airlines
2 Stops
17h 49m
STL - CHI
$ 531
Kiwi
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6:00 AM - 11:23 AM
Alaska Airlines
1 Stops
11h 37m
STL - CHI
$ 659
Kiwi
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How to find the cheapest flight from St Louis (STL) to Chicago (CHI)

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