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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 September , October 2026

29 Sep - 27 Oct $ 373.00
STL
St Louis
United Airlines
DIRECT
CHI
Chicago
CHI
Chicago
United Airlines
DIRECT
STL
St Louis
Pick dates
27 Sep - 11 Oct $ 587.00
STL
St Louis
United Airlines
DIRECT
CHI
Chicago
CHI
Chicago
United Airlines
DIRECT
STL
St Louis
Pick dates
27 Sep - 11 Oct $ 587.00
STL
St Louis
United Airlines
DIRECT
CHI
Chicago
CHI
Chicago
United Airlines
DIRECT
STL
St Louis
Pick dates

Last minute flights from St Louis to Chicago

28 Sep - 30 Sep $ 423.00
STL
St Louis
Frontier Airlines
1 STOPS
CHI
Chicago
CHI
Chicago
Frontier Airlines
1 STOPS
STL
St Louis
Pick dates
29 Sep - 30 Sep $ 555.00
STL
St Louis
United Airlines
DIRECT
CHI
Chicago
CHI
Chicago
United Airlines
DIRECT
STL
St Louis
Pick dates
27 Sep - 30 Sep $ 574.00
STL
St Louis
United Airlines
DIRECT
CHI
Chicago
CHI
Chicago
United Airlines
DIRECT
STL
St Louis
Pick dates

One-way flights to Chicago from St Louis

2:29 PM - 10:50 PM
Frontier Airlines
1 Stops
9h 15m
STL - CHI
$ 217
Kiwi
Pick dates
5:33 PM - 5:33 PM
United Airlines
0 Stops
1h 29m
STL - CHI
$ 264
Kiwi
Pick dates
5:36 PM - 5:36 PM
United Airlines
0 Stops
1h 29m
STL - CHI
$ 264
Kiwi
Pick dates

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.