Cheap Flights from Chicago, IL to Denver, CO from $45
On Cheapflightsplus.com you will find 24 direct and 295 connecting flights from Chicago to Denver. You can compare airfare deals from 9 airlines and multiple travel sites from $45, 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.
Find One-Way and Round-Trip Chicago to Denver Flight Deals
Best Flights from Chicago to Denver Today
Price | Departure | Arrival | Flight Duration | Airline | Flight |
---|---|---|---|---|---|
from $45 | 06:00 Chicago O'Hare International | 07:41 Denver Denver International | 2h 41m | Frontier Airlines | F91483 |
from $54 | 12:35 Chicago Midway | 14:19 Denver Denver International | 2h 44m | Frontier Airlines | F92209 |
from $63 | 07:45 Chicago O'Hare International | 09:38 Denver Denver International | 2h 53m | Frontier Airlines | F93173 |
from $83 | 05:00 Chicago O'Hare International | 06:41 Denver Denver International | 2h 41m | United Airlines | UA2666 |
from $83 | 08:49 Chicago O'Hare International | 10:35 Denver Denver International | 2h 46m | United Airlines | UA250 |
from $83 | 16:10 Chicago O'Hare International | 17:56 Denver Denver International | 2h 46m | United Airlines | UA1801 |
from $83 | 21:32 Chicago O'Hare International | 23:18 Denver Denver International | 2h 46m | United Airlines | UA2296 |
from $87 | 19:01 Chicago Midway | 20:45 Denver Denver International | 2h 44m | Frontier Airlines | F91227 |
from $138 | 16:10 Chicago O'Hare International | 17:56 Denver Denver International | 2h 46m | United Airlines | UA1732 |
from $190 | 10:44 Chicago O'Hare International | 12:29 Denver Denver International | 2h 45m | United Airlines | UA1803 |
from $65 | 16:45 Chicago Midway | 23:02 Denver Denver International | 7h 17m layover 2h 13m - Dallas | Frontier Airlines | F92999 F94463 |
from $78 | 20:07 Chicago O'Hare International | 03:56+1 день Denver Denver International | 8h 49m layover 2h 20m - Las Vegas | Frontier Airlines | F92145 F93844 |
from $79 | 12:50 Chicago Midway | 19:31 Denver Denver International | 7h 41m layover 1h 40m - Baltimore | Frontier Airlines | F93088 F92705 |
from $82 | 07:45 Chicago O'Hare International | 19:31 Denver Denver International | 12h 46m layover 6h 35m - Baltimore | Frontier Airlines | F94064 F92705 |
from $82 | 20:27 Chicago O'Hare International | 08:28+1 день Denver Denver International | 13h 1m layover 6h 22m - Philadelphia | Frontier Airlines | F92112 F93339 |
from $89 | 13:11 Chicago Midway | 07:16+1 день Denver Denver International | 19h 5m layover 14h 11m - Fletcher | Allegiant Air | G41846 G4233 |
Flight Schedule Chicago (Illinois) to Denver (Colorado)
Departure | Arrival | Flight Details | Flight Duration | Price |
---|---|---|---|---|
05:00 — 06:41
|
05:00 — 06:41
UA2666
United Airlines
Chicago — Denver
|
2h 41m |
Find flight
from$83 |
|
06:00 — 07:41
|
06:00 — 07:41
F91483
Frontier Airlines
Chicago — Denver
|
2h 41m |
Find flight
from$45 |
|
07:15 — 08:59
|
07:15 — 08:59
UA791
United Airlines
Chicago — Denver
|
2h 44m |
Find flight
from$84 |
|
07:45 — 09:38
|
07:45 — 09:38
F93173
Frontier Airlines
Chicago — Denver
|
2h 53m |
Find flight
from$63 |
|
08:45 — 10:35
|
08:45 — 10:35
UA1599
United Airlines
Chicago — Denver
|
2h 50m |
Find flight
from$84 |
|
08:49 — 10:35
|
08:49 — 10:35
UA250
United Airlines
Chicago — Denver
|
2h 46m |
Find flight
from$83 |
|
08:49 — 10:35
|
08:49 — 10:35
UA2154
United Airlines
Chicago — Denver
|
2h 46m |
Find flight
from$84 |
|
10:44 — 12:29
|
10:44 — 12:29
UA1803
United Airlines
Chicago — Denver
|
2h 45m |
Find flight
from$190 |
|
12:35 — 14:19
|
12:35 — 14:19
F92209
Frontier Airlines
Chicago — Denver
|
2h 44m |
Find flight
from$54 |
|
12:55 — 14:37
|
12:55 — 14:37
UA1484
United Airlines
Chicago — Denver
|
2h 42m |
Find flight
from$88 |
|
12:55 — 14:37
|
12:55 — 14:37
UA2479
United Airlines
Chicago — Denver
|
2h 42m |
Find flight
from$89 |
|
13:04 — 14:46
|
13:04 — 14:46
UA622
United Airlines
Chicago — Denver
|
2h 42m |
Find flight
from$88 |
|
13:58 — 15:39
|
13:58 — 15:39
UA503
United Airlines
Chicago — Denver
|
2h 41m |
Find flight
from$88 |
|
14:16 — 16:02
|
14:16 — 16:02
UA767
United Airlines
Chicago — Denver
|
2h 46m |
Find flight
from$84 |
|
14:53 — 16:35
|
14:53 — 16:35
UA664
United Airlines
Chicago — Denver
|
2h 42m |
Find flight
from$88 |
|
14:53 — 16:35
|
14:53 — 16:35
UA2048
United Airlines
Chicago — Denver
|
2h 42m |
Find flight
from$89 |
|
16:10 — 17:56
|
16:10 — 17:56
UA1801
United Airlines
Chicago — Denver
|
2h 46m |
Find flight
from$83 |
|
16:10 — 17:56
|
16:10 — 17:56
UA1732
United Airlines
Chicago — Denver
|
2h 46m |
Find flight
from$138 |
|
19:01 — 20:45
|
19:01 — 20:45
F91227
Frontier Airlines
Chicago — Denver
|
2h 44m |
Find flight
from$87 |
|
20:08 — 21:59
|
20:08 — 21:59
UA1555
United Airlines
Chicago — Denver
|
2h 51m |
Find flight
from$83 |
|
20:08 — 21:58
|
20:08 — 21:58
UA2040
United Airlines
Chicago — Denver
|
2h 50m |
Find flight
from$84 |
|
20:10 — 22:00
|
20:10 — 22:00
UA2394
United Airlines
Chicago — Denver
|
2h 50m |
Find flight
from$89 |
|
21:32 — 23:18
|
21:32 — 23:18
UA2296
United Airlines
Chicago — Denver
|
2h 46m |
Find flight
from$83 |
|
21:32 — 23:22
|
21:32 — 23:22
UA1748
United Airlines
Chicago — Denver
|
2h 50m |
Find flight
from$89 |
|
06:10 — 16:01
|
06:10 — 07:50
SY1630
Sun Country Airlines
Chicago — Minneapolis
7h 4m stop
14:54 — 16:01
SY655
Sun Country Airlines
Minneapolis — Denver
|
10h 51m including layover |
Find flight
from$96 |
|
07:45 — 19:31
|
07:45 — 10:51
F94064
Frontier Airlines
Chicago — Baltimore
6h 35m stop
17:26 — 19:31
F92705
Frontier Airlines
Baltimore — Denver
|
12h 46m including layover |
Find flight
from$82 |
|
09:08 — 18:41
|
09:17 — 13:11
F92792
Frontier Airlines
Chicago — Orlando
3h 27m stop
06:00 — 08:18
F91733
Frontier Airlines
Orlando — Denver
|
10h 33m including layover |
Find flight
from$87 |
|
09:58 — 23:19
|
09:17 — 13:11
F92792
Frontier Airlines
Chicago — Orlando
7h 17m stop
20:50 — 23:22
F93311
Frontier Airlines
Orlando — Denver
|
14h 21m including layover |
Find flight
from$102 |
|
10:00 — 21:59
|
10:00 — 12:34
AS329
Alaska Airlines
Chicago — Seattle
5h 38m stop
18:12 — 21:59
AS1163
Alaska Airlines
Seattle — Denver
|
12h 59m including layover |
Find flight
from$132 |
|
10:58 — 18:02
|
10:58 — 12:25
UA4467
United Airlines
Chicago — Lake Saint Louis
4h 15m stop
16:40 — 18:02
UA483
United Airlines
Lake Saint Louis — Denver
|
8h 4m including layover |
Find flight
from$135 |
|
12:50 — 19:31
|
06:15 — 09:05
F93088
Frontier Airlines
Chicago — Baltimore
1h 40m stop
17:58 — 20:18
F92705
Frontier Airlines
Baltimore — Denver
|
7h 41m including layover |
Find flight
from$79 |
|
14:20 — 23:43
|
11:47 — 14:37
F93243
Frontier Airlines
Chicago — Dallas
5h 17m stop
20:06 — 21:32
F94069
Frontier Airlines
Dallas — Denver
|
10h 23m including layover |
Find flight
from$86 |
|
15:48 — 23:59
|
13:02 — 16:48
F91416
Frontier Airlines
Chicago — Tampa
2h 28m stop
22:33 — 00:49
F92745
Frontier Airlines
Tampa — Denver
|
9h 11m including layover |
Find flight
from$96 |
|
16:45 — 23:02
|
16:02 — 18:55
F92999
Frontier Airlines
Chicago — Dallas
2h 13m stop
22:15 — 23:29
F94463
Frontier Airlines
Dallas — Denver
|
7h 17m including layover |
Find flight
from$65 |
|
17:46 — 23:52
|
17:46 — 20:42
F93241
Frontier Airlines
Chicago — Dallas
1h 44m stop
22:26 — 23:52
F94069
Frontier Airlines
Dallas — Denver
|
7h 6m including layover |
Find flight
from$92 |
|
18:50 — 23:43
|
18:50 — 21:25
F92999
Frontier Airlines
Chicago — Dallas
1h stop
22:25 — 23:43
F94069
Frontier Airlines
Dallas — Denver
|
5h 53m including layover |
Find flight
from$80 |
|
18:50 — 06:26
+1 day
|
18:50 — 21:25
F92999
Frontier Airlines
Chicago — Dallas
7h 45m stop
05:10 — 06:26
F92147
Frontier Airlines
Dallas — Denver
|
12h 36m including layover |
Find flight
from$84 |
|
20:07 — 03:56
+1 day
|
18:36 — 21:00
F92145
Frontier Airlines
Chicago — Las Vegas
2h 20m stop
15:38 — 18:36
F93844
Frontier Airlines
Las Vegas — Denver
|
8h 49m including layover |
Find flight
from$78 |
|
20:27 — 08:28
+1 day
|
19:04 — 22:30
F92112
Frontier Airlines
Chicago — Philadelphia
6h 22m stop
06:15 — 08:29
F93339
Frontier Airlines
Philadelphia — Denver
|
13h 1m including layover |
Find flight
from$82 |
|
22:56 — 09:32
+1 day
|
22:56 — 00:47
F91735
Frontier Airlines
Chicago — Phoenix
5h 46m stop
06:33 — 09:32
F91376
Frontier Airlines
Phoenix — Denver
|
11h 36m including layover |
Find flight
from$84 |
|
11:50 — 18:14
+1 day
|
11:50 — 13:50
NK2620
Spirit Airlines
Chicago — Las Vegas
3h 28m stop
17:18 — 18:49
NK2382
Spirit Airlines
Las Vegas — Stockton
20h 1m stop
14:50 — 18:14
G41635
Allegiant Air
Stockton — Denver
|
31h 24m including layover |
Find flight
from$122 |
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 05:00 to 22:56 from 7 Chicago airports and arrive 05:00 to 22:56 to 2 Denver airports. Average flight time is 2h 46m.
- The fastest flight 2h 41m
- Average flight time 2h 46m
- The earliest flight 05:00
- The latest flight 22:56
- Distance 900 ml
The cheapest months to travel to Denver are june (from 61 $), august (from 72 $), july (from 77 $).
The most expensive months are april (from 142 $), october (from 118 $), may (from 115 $).
What is the lowest airfare Chicago to Denver?
The cheapest plane ticket found by our users is $45. This airfare is for economy class on one-way F91483 flight by Frontier Airlines for June 28, 2025 which leaves O'Hare International in Chicago at 06:00 am and arrives at Denver Denver International at 07:41.
Popular Airlines on the Route
The flight Chicago — Denver is served by 9 regular airlines and 4 low-cost airlines. Most of the flights on this route are operated by Frontier Airlines - 29 departures per week at the price of from $ 45 . And the most expensive tickets are offered by Finnair airline - from $ 3171.
Direct flights
There are 24 nonstop flights on the route. The fastest direct flight is F91483 by Frontier Airlines takes 2h 41m and the cheapest is F91483 by Frontier Airlines for $45.
- from $45Find
- from $83Find
Connecting Flights
There are 295 flights with layovers on the route. The fastest connecting flight is UA1139 by United Airlines takes 4h 24m and the cheapest is F91483 by Frontier Airlines for $65.
- from $65Find
- from $135Find
- AS - Alaska Airlinesfrom $127Find
- EI - Aer Lingusfrom $1319Find
- SY - Sun Country Airlinesfrom $96Find
- AY - Finnairfrom $3171Find
- HA - Hawaiian Airlinesfrom $126Find
- G4 - Allegiant Airfrom $89Find
- NK - Spirit Airlinesfrom $122Find
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-ORDfrom $45Find
- Midway-MDWfrom $54Find
- Dupage County-DPAFind
- Chicago FSS-CHIFind
- Merrill C Meigs (closed)-CGXFind
- Pal-Waukee-PWKFind
- Chicago NAS-NOHFind
Denver airports
- Denver International-DENFind
- Arapahoe Co-APAFind
Airplanes
There are flights to Denver from Chicago by 9 airlines that use 3 aircraft brands. They range from huge modern airplanes to small-sized.
- Boeing 737-900from $282Find
- Airbus A320from $396Find
- Airbus A319from $465Find
Top Domestic Destinations from Chicago
You may also consider searching for discounted plane tickets to some other popular places from Chicago within United States.
- from $508Find
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- from $66Find
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- from $61Find
- from $65Find
- from $61Find
Top International Destinations from Chicago
Our state-of-the art metasearch will definitely provide you with the best airfare on international flights. We’re proud to partner with many reliable travel suppliers located outside the US what gives us an opportunity to offer the most competitive prices on far destinations.
- from $60Find
- from $72Find
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- from $79Find
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- from $74Find
How to book a plane 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.
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