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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 May , June 2026

29 May - 20 Jun $ 125.00
CHI
Chicago
Frontier Airlines
DIRECT
DEN
Denver
DEN
Denver
Frontier Airlines
DIRECT
CHI
Chicago
Pick dates
23 May - 11 Jun $ 173.00
CHI
Chicago
Frontier Airlines
DIRECT
DEN
Denver
DEN
Denver
Frontier Airlines
1 STOPS
CHI
Chicago
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17 May - 15 Jun $ 465.00
CHI
Chicago
United Airlines
DIRECT
DEN
Denver
DEN
Denver
United Airlines
DIRECT
CHI
Chicago
Pick dates

Last minute flights from Chicago to Denver

23 May - 01 Jun $ 213.00
CHI
Chicago
Frontier Airlines
DIRECT
DEN
Denver
DEN
Denver
Frontier Airlines
1 STOPS
CHI
Chicago
Pick dates
29 May - 31 May $ 226.00
CHI
Chicago
Frontier Airlines
DIRECT
DEN
Denver
DEN
Denver
Frontier Airlines
DIRECT
CHI
Chicago
Pick dates
24 May - 31 May $ 424.00
CHI
Chicago
United Airlines
DIRECT
DEN
Denver
DEN
Denver
United Airlines
DIRECT
CHI
Chicago
Pick dates

One-way flights to Denver from Chicago

9:37 PM - 9:37 PM
Frontier Airlines
0 Stops
3h 7m
CHI - DEN
$ 66
Kiwi
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9:37 PM - 9:37 PM
Frontier Airlines
0 Stops
3h 7m
CHI - DEN
$ 78
Kiwi
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5:00 AM - 5:00 AM
United Airlines
0 Stops
2h 41m
CHI - DEN
$ 179
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.