United Airlines Chicago to Denver Flights

Return flight: Denver – Chicago

Cheapflightsplus.com will find cheap United Airlines flights from Chicago to Denver. Compare airline ticket prices and book air tickets starting from $82 from trusted online travel agencies, web sites and directly from airlines. Check flights schedule of United Airlines, arrivals and departure details below.

Find Cheap Airfare Chicago (IL) — Denver (CO) by United Airlines

To find cheap tickets choose a day of your departure with attractive price on the graph below and click «Find flights». For round trip flights please click «Check prices for return flight». The cheapest airfare is in june: one-way - $82, two-way – $141.
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Below is a detailed 2025 flight schedule for today, tomorrow and all other days. It may vary depending on season and a day of the week of your desired trip. We recommend booking your itinerary at least 2 weeks prior your travel to get the best price and availability by the airline.
Departure Arrival Flight Details Flight Time Price
10:44 am — 12:29 pm
10:44 am — 12:29 pm UA1803 United Airlines
Chicago — Denver
2h 45m
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from$187
12:55 pm — 2:37 pm
12:55 pm — 2:37 pm UA1484 United Airlines
Chicago — Denver
2h 42m
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from$87
12:55 pm — 2:37 pm
12:55 pm — 2:37 pm UA2479 United Airlines
Chicago — Denver
2h 42m
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from$87
1:04 pm — 2:46 pm
1:04 pm — 2:46 pm UA622 United Airlines
Chicago — Denver
2h 42m
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from$87
1:58 pm — 3:39 pm
1:58 pm — 3:39 pm UA503 United Airlines
Chicago — Denver
2h 41m
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from$87
2:16 pm — 4:02 pm
2:16 pm — 4:02 pm UA767 United Airlines
Chicago — Denver
2h 46m
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from$82
2:53 pm — 4:35 pm
2:53 pm — 4:35 pm UA664 United Airlines
Chicago — Denver
2h 42m
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from$87
2:53 pm — 4:35 pm
2:53 pm — 4:35 pm UA2048 United Airlines
Chicago — Denver
2h 42m
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from$87
4:10 pm — 5:56 pm
4:10 pm — 5:56 pm UA1801 United Airlines
Chicago — Denver
2h 46m
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from$82
4:10 pm — 5:56 pm
4:10 pm — 5:56 pm UA1732 United Airlines
Chicago — Denver
2h 46m
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from$135
5:00 am — 6:41 am
5:00 am — 6:41 am UA2666 United Airlines
Chicago — Denver
2h 41m
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from$82
7:10 am — 8:58 am
7:10 am — 8:58 am UA1131 United Airlines
Chicago — Denver
2h 48m
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from$99
7:15 am — 8:59 am
7:15 am — 8:59 am UA791 United Airlines
Chicago — Denver
2h 44m
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from$82
8:08 pm — 9:59 pm
8:08 pm — 9:59 pm UA1555 United Airlines
Chicago — Denver
2h 51m
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from$82
8:08 pm — 9:58 pm
8:08 pm — 9:58 pm UA2040 United Airlines
Chicago — Denver
2h 50m
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from$82
8:10 pm — 10:00 pm
8:10 pm — 10:00 pm UA2394 United Airlines
Chicago — Denver
2h 50m
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from$87
8:45 am — 10:35 am
8:45 am — 10:35 am UA1599 United Airlines
Chicago — Denver
2h 50m
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from$82
8:49 am — 10:35 am
8:49 am — 10:35 am UA250 United Airlines
Chicago — Denver
2h 46m
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from$82
8:49 am — 10:35 am
8:49 am — 10:35 am UA2154 United Airlines
Chicago — Denver
2h 46m
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from$83
9:32 pm — 11:18 pm
9:32 pm — 11:18 pm UA2296 United Airlines
Chicago — Denver
2h 46m
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from$82
9:32 pm — 11:22 pm
9:32 pm — 11:22 pm UA1748 United Airlines
Chicago — Denver
2h 50m
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from$87
10:58 am — 6:02 pm
10:58 am — 12:25 pm UA4467 United Airlines
Chicago — Lake Saint Louis
4h 15m stop
4:40 pm — 6:02 pm UA483 United Airlines
Lake Saint Louis — Denver
8h 4m
including layover
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from$133
10:58 am — 6:01 pm
10:58 am — 12:25 pm UA4613 United Airlines
Chicago — Lake Saint Louis
4h 15m stop
4:40 pm — 6:01 pm UA2132 United Airlines
Lake Saint Louis — Denver
8h 3m
including layover
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from$171
11:01 am — 6:09 pm
11:01 am — 12:27 pm UA5731 United Airlines
Chicago — Lake Saint Louis
4h 18m stop
4:45 pm — 6:09 pm UA475 United Airlines
Lake Saint Louis — Denver
8h 8m
including layover
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from$230
11:05 am — 7:39 pm
11:05 am — 1:17 pm UA1250 United Airlines
Chicago — Indianapolis
5h 33m stop
6:50 pm — 7:39 pm UA1342 United Airlines
Indianapolis — Denver
9h 34m
including layover
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from$254
3:41 pm — 7:39 pm
3:41 pm — 5:55 pm UA3690 United Airlines
Chicago — Indianapolis
55m stop
6:50 pm — 7:39 pm UA1342 United Airlines
Indianapolis — Denver
4h 58m
including layover
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from$378
3:50 pm — 7:31 pm
3:50 pm — 5:25 pm UA374 United Airlines
Chicago — Minneapolis
50m stop
6:15 pm — 7:31 pm UA1593 United Airlines
Minneapolis — Denver
4h 41m
including layover
Find flight
from$352
*Departure and arrival times are local. Last updated on 06/02/2025

Flight Information

There are 21 flight by United Airlines from Chicago to Denver every week with departures from Chicago FSS, Midway, O'Hare International, Chicago NAS, Merrill C Meigs (closed), Dupage County, Pal-Waukee. All flights arrive at Denver International and Arapahoe Co.

Departures start from 10:35 am to 9:50 pm. Nonstop flight is 2h 41m. The time difference between Chicago and Denver is 1h.

  • The fastest flight 2h 41m
  • Average flight time 2h 46m
  • The earliest flight 10:35 am
  • The latest flight 9:50 pm
  • Distance 900 ml

The cheapest months for traveling to Denver are september (from 110 $), august (from 110 $), october (from 116 $).

The most expensive and popular months are april (from 380 $), november (from 370 $), july (from 121 $).

The cheapest flight by United Airlines that our users were able to find is $82. This airfare is economy class on one-way UA2666 flight for September 27, 2025 leaving O'Hare International in Chicago at 5:00 am, it includes all taxes and additional fees.

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Other Popular Airlines on the Route

Besides United Airlines there are other 8 airline carriers between Chicago and Denver. Please review schedules and prices from the most popular airlines to find the best airfare deals from Chicago to Denver.

Nonstop flights

There are 25 direct flights every day from Chicago. Airlines and fares are below:

See more direct flights

Connecting Flights

List of flights with layovers (1 and more stops):

  • from $64
    Find
  • AS - Alaska Airlines
    from $125
    Find
  • EI - Aer Lingus
    from $1299
    Find
  • SY - Sun Country Airlines
    from $96
    Find
  • AY - Finnair
    from $3122
    Find
  • HA - Hawaiian Airlines
    from $124
    Find
  • G4 - Allegiant Air
    from $88
    Find
  • NK - Spirit Airlines
    from $120
    Find
See more connecting flights

How to book an air 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 airfare.
  • 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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