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Cheap flights from Chicago (CHI) to Denver (DEN)

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0 Children (2~11)
0 Infants (0~2)
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How to find the cheapest flight from Chicago (CHI) to Denver (DEN)

How to find the cheapest flight from Chicago (CHI) to Denver (DEN)
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How to find the cheapest flight from Chicago (CHI) to Denver (DEN)
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How to find the cheapest flight from Chicago (CHI) to Denver (DEN)
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Cheap flights from Chicago to Denver in October , November 2026

31 Oct - 06 Nov $ 199.00
CHI
Chicago
Frontier Airlines
DIRECT
DEN
Denver
DEN
Denver
Frontier Airlines
DIRECT
CHI
Chicago
Pick dates
21 Oct - 10 Nov $ 216.00
CHI
Chicago
Frontier Airlines
DIRECT
DEN
Denver
DEN
Denver
Frontier Airlines
DIRECT
CHI
Chicago
Pick dates
21 Oct - 06 Nov $ 216.00
CHI
Chicago
Frontier Airlines
DIRECT
DEN
Denver
DEN
Denver
Frontier Airlines
DIRECT
CHI
Chicago
Pick dates

Last minute flights from Chicago to Denver

28 Oct - 31 Oct $ 273.00
CHI
Chicago
Frontier Airlines
DIRECT
DEN
Denver
DEN
Denver
Frontier Airlines
DIRECT
CHI
Chicago
Pick dates
21 Oct - 31 Oct $ 277.00
CHI
Chicago
Frontier Airlines
DIRECT
DEN
Denver
DEN
Denver
Frontier Airlines
1 STOPS
CHI
Chicago
Pick dates
24 Oct - 31 Oct $ 620.00
CHI
Chicago
United Airlines
DIRECT
DEN
Denver
DEN
Denver
United Airlines
DIRECT
CHI
Chicago
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One-way flights to Denver from Chicago

6:30 AM - 6:30 AM
Frontier Airlines
0 Stops
2h 49m
CHI - DEN
$ 143
Kiwi
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8:30 AM - 12:30 PM
Frontier Airlines
1 Stops
6h 17m
CHI - DEN
$ 156
Kiwi
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5:00 AM - 5:00 AM
United Airlines
0 Stops
2h 39m
CHI - DEN
$ 273
Kiwi
Pick dates

How to find the cheapest flight from Chicago (CHI) to Denver (DEN)

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