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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)
Save up to 31%
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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 October , November 2026

28 Oct - 11 Nov $ 269.00
STL
St Louis
Frontier Airlines
1 STOPS
CHI
Chicago
CHI
Chicago
Frontier Airlines
1 STOPS
STL
St Louis
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28 Oct - 04 Nov $ 269.00
STL
St Louis
Frontier Airlines
1 STOPS
CHI
Chicago
CHI
Chicago
Frontier Airlines
1 STOPS
STL
St Louis
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23 Oct - 02 Nov $ 364.00
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

28 Oct - 31 Oct $ 293.00
STL
St Louis
Frontier Airlines
1 STOPS
CHI
Chicago
CHI
Chicago
Frontier Airlines
1 STOPS
STL
St Louis
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28 Oct - 31 Oct $ 293.00
STL
St Louis
Frontier Airlines
1 STOPS
CHI
Chicago
CHI
Chicago
Frontier Airlines
1 STOPS
STL
St Louis
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26 Oct - 31 Oct $ 660.00
STL
St Louis
United Airlines
DIRECT
CHI
Chicago
CHI
Chicago
United Airlines
DIRECT
STL
St Louis
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One-way flights to Chicago from St Louis

6:44 PM - 10:48 PM
Frontier Airlines
1 Stops
5h 3m
STL - CHI
$ 144
Kiwi
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4:18 PM - 8:55 PM
Frontier Airlines
1 Stops
8h 3m
STL - CHI
$ 144
Kiwi
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1:08 PM - 1:08 PM
United Airlines
0 Stops
1h 27m
STL - CHI
$ 325
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.