United Airlines Chicago to Denver Flights

One way Round trip

Adults

Children under 12

Infants under 2 without place

Economy

Business

First

done

Return flight: Denver – Chicago

Page navigation

Best Airfare Price Calendar Flights Schedule

Cheapflightsplus.com will find cheap United Airlines flights from Chicago to Denver. Compare airline ticket prices and book air tickets starting from $83 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 july: one-way - $83, two-way – $142.

Direct flights

Check to choose departure date Check to choose departure date

Check prices for return flight

Find flights

Cheap Flights from Chicago to Denver by United Airlines

Look at the list of plane tickets for the most popular direct and connecting flights by United Airlines, their prices start from $83. The fastest nonstop flight takes 2h 41m. The fastest connecting flight — 4h 24m.

Price	Departure	Arrival	Flight Time	Airline	Flight
from $83 Find flight	5:00 am Chicago O'Hare International	6:41 am Denver Denver International	2h 41m	United Airlines	UA2666
from $83 Find flight	8:49 am Chicago O'Hare International	10:35 am Denver Denver International	2h 46m	United Airlines	UA250
from $83 Find flight	8:08 pm Chicago O'Hare International	9:59 pm Denver Denver International	2h 51m	United Airlines	UA1555
from $83 Find flight	9:32 pm Chicago O'Hare International	11:18 pm Denver Denver International	2h 46m	United Airlines	UA2296
from $83 Find flight	4:10 pm Chicago O'Hare International	5:56 pm Denver Denver International	2h 46m	United Airlines	UA1801
from $84 Find flight	8:45 am Chicago O'Hare International	10:35 am Denver Denver International	2h 50m	United Airlines	UA1599
from $84 Find flight	8:08 pm Chicago O'Hare International	9:58 pm Denver Denver International	2h 50m	United Airlines	UA2040
from $84 Find flight	2:16 pm Chicago O'Hare International	4:02 pm Denver Denver International	2h 46m	United Airlines	UA767
from $84 Find flight	7:15 am Chicago O'Hare International	8:59 am Denver Denver International	2h 44m	United Airlines	UA791
from $84 Find flight	8:49 am Chicago O'Hare International	10:35 am Denver Denver International	2h 46m	United Airlines	UA2154
from $88 Find flight	12:55 pm Chicago O'Hare International	2:37 pm Denver Denver International	2h 42m	United Airlines	UA1484
from $138 Find flight	4:10 pm Chicago O'Hare International	5:56 pm Denver Denver International	2h 46m	United Airlines	UA1732
from $190 Find flight	10:44 am Chicago O'Hare International	12:29 pm Denver Denver International	2h 45m	United Airlines	UA1803
from $135 Find flight	10:58 am Chicago O'Hare International	6:02 pm Denver Denver International	8h 4m layover 4h 15m - Lake Saint Louis	United Airlines	UA4467 UA483
from $168 Find flight	4:45 pm Chicago O'Hare International	7:02 am+1 день Denver Denver International	15h 17m layover 11h 40m - Salina	United Airlines	UA5108 UA5109
from $195 Find flight	9:46 am Chicago O'Hare International	10:43 pm Denver Denver International	13h 57m layover 8h 9m - Houston	United Airlines	UA2099 UA2215

Show All Flights

*Departure and arrival times are local. Prices are for one-way flights. Information refreshed on 06/23/2025

United Airlines Flight Schedule Chicago to Denver

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	Flight Details	Flight Time	Price
10:44 am — 12:29 pm	10:44 am — 12:29 pm UA1803 United Airlines Chicago — Denver	2h 45m	Find flight from$190
12:55 pm — 2:37 pm	12:55 pm — 2:37 pm UA1484 United Airlines Chicago — Denver	2h 42m	Find flight from$88
12:55 pm — 2:37 pm	12:55 pm — 2:37 pm UA2479 United Airlines Chicago — Denver	2h 42m	Find flight from$89
1:04 pm — 2:46 pm	1:04 pm — 2:46 pm UA622 United Airlines Chicago — Denver	2h 42m	Find flight from$88
1:58 pm — 3:39 pm	1:58 pm — 3:39 pm UA503 United Airlines Chicago — Denver	2h 41m	Find flight from$88
2:16 pm — 4:02 pm	2:16 pm — 4:02 pm UA767 United Airlines Chicago — Denver	2h 46m	Find flight from$84
2:53 pm — 4:35 pm	2:53 pm — 4:35 pm UA664 United Airlines Chicago — Denver	2h 42m	Find flight from$88
2:53 pm — 4:35 pm	2:53 pm — 4:35 pm UA2048 United Airlines Chicago — Denver	2h 42m	Find flight from$89
4:10 pm — 5:56 pm	4:10 pm — 5:56 pm UA1801 United Airlines Chicago — Denver	2h 46m	Find flight from$83
4:10 pm — 5:56 pm	4:10 pm — 5:56 pm UA1732 United Airlines Chicago — Denver	2h 46m	Find flight from$138
5:00 am — 6:41 am	5:00 am — 6:41 am UA2666 United Airlines Chicago — Denver	2h 41m	Find flight from$83
7:15 am — 8:59 am	7:15 am — 8:59 am UA791 United Airlines Chicago — Denver	2h 44m	Find flight from$84
8:08 pm — 9:59 pm	8:08 pm — 9:59 pm UA1555 United Airlines Chicago — Denver	2h 51m	Find flight from$83
8:08 pm — 9:58 pm	8:08 pm — 9:58 pm UA2040 United Airlines Chicago — Denver	2h 50m	Find flight from$84
8:10 pm — 10:00 pm	8:10 pm — 10:00 pm UA2394 United Airlines Chicago — Denver	2h 50m	Find flight from$89
8:45 am — 10:35 am	8:45 am — 10:35 am UA1599 United Airlines Chicago — Denver	2h 50m	Find flight from$84
8:49 am — 10:35 am	8:49 am — 10:35 am UA250 United Airlines Chicago — Denver	2h 46m	Find flight from$83
8:49 am — 10:35 am	8:49 am — 10:35 am UA2154 United Airlines Chicago — Denver	2h 46m	Find flight from$84
9:32 pm — 11:18 pm	9:32 pm — 11:18 pm UA2296 United Airlines Chicago — Denver	2h 46m	Find flight from$83
9:32 pm — 11:22 pm	9:32 pm — 11:22 pm UA1748 United Airlines Chicago — Denver	2h 50m	Find flight from$89
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	Find flight from$135
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	Find flight from$174
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	Find flight from$233
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	Find flight from$258
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	Find flight from$384
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$357
7:25 am — 6:09 pm	7:25 am — 9:09 am UA3479 United Airlines Chicago — North Kansas City 8h 6m stop 5:15 pm — 6:09 pm UA2123 United Airlines North Kansas City — Denver	11h 44m including layover	Find flight from$149

Departure	Arrival	Flight Details	Flight Time	Price
		stop stop	including layover	Find flight from$

*Departure and arrival times are local. Last updated on 06/23/2025

Flight Information

There are 20 flights 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 111 $), august (from 112 $), october (from 118 $).

The most expensive and popular months are april (from 386 $), november (from 376 $), july (from 123 $).

The cheapest flight by United Airlines that our users were able to find is $83. 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.

Find same flight?

United Airlines Airplanes on the Route

List of the most popular United Airlines airplanes flying from Chicago to Denver:

Boeing 737-900

from $282

Find
Airbus A320

from $396

Find
Airbus A319

from $465

Find

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

F9 - Frontier Airlines

from $45

Find

See more direct flights

Connecting Flights

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

F9 - Frontier Airlines

from $65

Find
AS - Alaska Airlines

from $127

Find
EI - Aer Lingus

from $1319

Find
SY - Sun Country Airlines

from $96

Find
AY - Finnair

from $3171

Find
HA - Hawaiian Airlines

from $126

Find
G4 - Allegiant Air

from $89

Find
NK - Spirit Airlines

from $122

Find

See more connecting flights

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.