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

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0 Children (2~11)
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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 January , February 2026

30 Jan - 05 Feb $ 106.00
CHI
Chicago
Frontier Airlines
DIRECT
DEN
Denver
DEN
Denver
Frontier Airlines
DIRECT
CHI
Chicago
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22 Jan - 05 Feb $ 119.00
CHI
Chicago
Frontier Airlines
1 STOPS
DEN
Denver
DEN
Denver
Frontier Airlines
DIRECT
CHI
Chicago
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22 Jan - 05 Feb $ 176.00
CHI
Chicago
Frontier Airlines
DIRECT
DEN
Denver
DEN
Denver
Frontier Airlines
DIRECT
CHI
Chicago
Pick dates

Last minute flights from Chicago to Denver

30 Jan - 31 Jan $ 149.00
CHI
Chicago
Frontier Airlines
DIRECT
DEN
Denver
DEN
Denver
Frontier Airlines
1 STOPS
CHI
Chicago
Pick dates
22 Jan - 31 Jan $ 162.00
CHI
Chicago
Frontier Airlines
1 STOPS
DEN
Denver
DEN
Denver
Frontier Airlines
1 STOPS
CHI
Chicago
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20 Jan - 31 Jan $ 386.00
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

12:07 PM - 12:07 PM
Frontier Airlines
0 Stops
2h 58m
CHI - DEN
$ 74
Kiwi
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8:00 AM - 3:16 PM
Frontier Airlines
1 Stops
9h 47m
CHI - DEN
$ 87
Kiwi
Pick dates
7:00 AM - 7:00 AM
United Airlines
0 Stops
2h 49m
CHI - DEN
$ 184
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.