Cheap Flights from Chicago, IL to Denver, CO from $108

Return flight: Denver – Chicago

On Cheapflightsplus.com you will find 12 direct and 53 connecting flights from Chicago to Denver. You can compare airfare deals from 5 airlines and multiple travel sites from $108, book and save on cheap plane tickets and last minute offers. Also check out CHI-DEN flight schedule to find best flight time, convenient departure and arrival airports.

Flight Information

Below we will explain in detail what the flights cost on the destination from Chicago to Denver depends on and how to choose the most interesting flight option for you.

Distance between Chicago and Denver is 1448 miles. Time difference between the cities is 1h. Airplanes depart 05:15 to 23:59 from 7 Chicago airports and arrive 05:15 to 23:59 to 2 Denver airports. Average flight time is 2h 49m.

  • The fastest flight 2h 41m
  • Average flight time 2h 49m
  • The earliest flight 05:15
  • The latest flight 23:59
  • Distance 900 ml

The cheapest months to travel to Denver are september (from 108 $), december (from 109 $), august (from 109 $).

The most expensive months are november (from 125 $), october (from 114 $), august (from 109 $).

What is the lowest airfare Chicago to Denver?

The cheapest plane ticket found by our users is $108. This airfare is for economy class on one-way UA1801 flight by United Airlines for November 17, 2025 which leaves O'Hare International in Chicago at 15:55 am and arrives at Denver Denver International at 17:45.

Economy class
$108
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Business class
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First class
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Flight Schedule Chicago (Illinois) to Denver (Colorado)

06:00 — 07:41
2h 41m flight time
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from$110
Chicago — Denver
F91483 Frontier Airlines
07:10 — 08:59
2h 49m flight time
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from$109
Chicago — Denver
UA791 United Airlines
08:47 — 10:35
2h 48m flight time
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from$404
Chicago — Denver
UA2131 United Airlines
10:40 — 12:30
2h 50m flight time
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from$404
Chicago — Denver
UA1803 United Airlines
11:53 — 20:06
9h 13m flight time
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from$125
11:53 — 14:58 Chicago — Charlotte
F93142 Frontier Airlines
3h 14m stop
18:12 — 20:06 Charlotte — Denver
F92369 Frontier Airlines
12:30 — 14:16
2h 46m flight time
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from$185
Chicago — Denver
F92209 Frontier Airlines
13:00 — 14:50
2h 50m flight time
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from$404
Chicago — Denver
UA2090 United Airlines
13:55 — 15:44
2h 49m flight time
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from$114
Chicago — Denver
UA767 United Airlines
14:40 — 16:30
2h 50m flight time
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from$404
Chicago — Denver
UA1485 United Airlines
15:30 — 22:41
8h 11m flight time
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from$125
15:30 — 18:34 Chicago — Phoenix
F91829 Frontier Airlines
2h 9m stop
20:43 — 22:41 Phoenix — Denver
F92142 Frontier Airlines
15:55 — 17:45
2h 50m flight time
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from$108
Chicago — Denver
UA1801 United Airlines
17:56 — 23:44
6h 48m flight time
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from$125
17:56 — 20:37 Chicago — Dallas
F92999 Frontier Airlines
1h 49m stop
22:26 — 23:44 Dallas — Denver
F94069 Frontier Airlines
18:15 — 20:04
2h 49m flight time
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from$404
Chicago — Denver
UA1819 United Airlines
20:00 — 21:49
2h 49m flight time
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from$108
Chicago — Denver
UA1555 United Airlines
21:30 — 23:15
2h 45m flight time
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from$108
Chicago — Denver
UA2296 United Airlines
Full flight schedule will help you in detecting at what time planes fly from Chicago to Denver. You can also specify the concrete flights and airlines on the route and how long the flight actually is. Use the calendar for today, tomorrow or other specific date as some flights are available only on certain days of the week.
*Departure and arrival times - local. Updated on December 3, 2025.

Popular Airlines on the Route

The flight Chicago — Denver is served by 5 regular airlines and 3 low-cost airlines. Most of the flights on this route are operated by Frontier Airlines - 32 departures per week at the price of from $ 110 . And the most expensive tickets are offered by United Airlines airline - from $ 844.

Direct flights

There are 12 nonstop flights on the route. The fastest direct flight is F91483 by Frontier Airlines takes 2h 41m and the cheapest is UA1801 by United Airlines for $108.

  • F9 - Frontier Airlines
    from $110
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  • UA - United Airlines
    from $108
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Connecting Flights

There are 53 flights with layovers on the route. The fastest connecting flight is UA5642 by United Airlines takes 5h and the cheapest is UA1801 by United Airlines for $125.

  • F9 - Frontier Airlines
    from $125
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  • LF - flynordic
    from $305
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  • Y4 - Volaris
    from $588
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  • UA - United Airlines
    from $528
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  • NK - Spirit Airlines
    from $241
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Airports

You can fly from Chicago to Denver from 7 airports (O'Hare International, Midway, Dupage County, Chicago FSS, Merrill C Meigs (closed), Pal-Waukee, Chicago NAS).

Chicago airports

  • O'Hare International-ORD
    from $108
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  • Midway-MDW
    from $125
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  • Dupage County-DPA
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  • Chicago FSS-CHI
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  • Merrill C Meigs (closed)-CGX
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  • Pal-Waukee-PWK
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  • Chicago NAS-NOH
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Denver airports

  • Denver International-DEN
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  • Arapahoe Co-APA
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How to book a plane ticket yourself?

How to book an air ticket yourself?
  • Fill in the search parameters — cities of departure and destination, departure and return dates and click «Find flights»
  • Select the best flight that you like. Please, check the airports of departure and arrival. Select the best fare, but pay attention to the following flight details - airports of departure and arrival, flight duration and layovers. Please use filters and sort to find the best flight.
  • Click «Buy» when you are ready — our system will redirect you to the site that sells the selected flight ticket.
  • Fill in all passenger and payment information — passport and contact information, please double check all passengers’ names and make a payment for your itinerary.
  • That's it — you will receive an email with your e-ticket usually within 10 minutes after your flight is confirmed. Please, print the e-ticket and have it with you at the airport. You would need to have only a passport and/or a required form of ID to travel. Please, check your Visa requirements if you travel outside of the United States or Canada.

    To find a plane ticket, please select dates.

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