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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 April , May 2026

27 Apr - 09 May $ 209.00
CHI
Chicago
Frontier Airlines
1 STOPS
DEN
Denver
DEN
Denver
Frontier Airlines
DIRECT
CHI
Chicago
Pick dates
28 Apr - 09 May $ 209.00
CHI
Chicago
Frontier Airlines
1 STOPS
DEN
Denver
DEN
Denver
Frontier Airlines
DIRECT
CHI
Chicago
Pick dates
25 Apr - 16 May $ 359.00
CHI
Chicago
United Airlines
DIRECT
DEN
Denver
DEN
Denver
United Airlines
DIRECT
CHI
Chicago
Pick dates

Last minute flights from Chicago to Denver

28 Apr - 30 Apr $ 325.00
CHI
Chicago
Frontier Airlines
1 STOPS
DEN
Denver
DEN
Denver
Frontier Airlines
1 STOPS
CHI
Chicago
Pick dates
25 Apr - 30 Apr $ 433.00
CHI
Chicago
United Airlines
DIRECT
DEN
Denver
DEN
Denver
United Airlines
DIRECT
CHI
Chicago
Pick dates
30 Apr - 30 Apr $ 763.00
CHI
Chicago
United Airlines
DIRECT
DEN
Denver
DEN
Denver
United Airlines
DIRECT
CHI
Chicago
Pick dates

One-way flights to Denver from Chicago

8:58 PM - 12:59 AM
Frontier Airlines
1 Stops
8h 1m
CHI - DEN
$ 135
Kiwi
Pick dates
2:35 PM - 2:35 PM
United Airlines
0 Stops
2h 54m
CHI - DEN
$ 185
Kiwi
Pick dates
3:00 PM - 3:00 PM
United Airlines
0 Stops
2h 52m
CHI - DEN
$ 389
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.