Flights from Chicago to Denver with Frontier Airlines

Our cheapest offers for flights from Chicago to Denver

Here you can compare cheap flights from Chicago (CHI) to Denver (DEN) for one-way or return trips. The following offers were searched for and found on idealo during the last few days. Or start your own flight search to Denver. Prices and availability may change at any time.

Outbound Return Airlines Shop Baggage Price
Chicago
Denver
Outbound
12/25/25
direct
F91483
02h 56min
Return
01/01/26
1 Stopover (MSP)
SY0658, SY0259
14h 37min
Frontier Airlines ?
$348
Chicago
Denver
Outbound
12/25/25
direct
F91483
02h 56min
Return
01/01/26
direct
F93172
02h 27min
Frontier Airlines
$354
Prices based on recent searches, subject to last-minute changes
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Important flight information

Flight information: Chicago - Denver

Roundtrip from 267,67 USD
Flight duration min. 02:38 / max. 09:35
Return flight duration min. 02:10/ max. 10:50
Distance 1450 km
Flights per week 256
Departure airport Airport Chicago-IL, all airports (CHI)
Arrival airport Airport Denver International Airport, CO (DEN)
Destination country Flights to United States
Alternative routes to United States
Alternative flights to Denver
Flight destinations with a similar price