Cheap Flights from Chicago, IL to Denver, CO from $72

One way Round trip

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On Cheapflightsplus.com you will find 22 direct and 215 connecting flights from Chicago to Denver. You can compare airfare deals from 8 airlines and multiple travel sites from $72, 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

To find the cheapest one way airline ticket select the date with the lowest price on the calendar below and click «Find Flights». To search for round-trip flight deals click on the link «Check prices for return flights» and select the date of the return flight. Cheapest flights in November: $72 (one-way), $123 (round-trip).

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Best Flights from Chicago to Denver Today

Take a look at the list of non stop flights and flights with layovers from Chicago to Denver with the lowest price of $72. The fastest direct flight takes 2h 41m and the fastest connecting – 4h 24m.

Price	Departure	Arrival	Flight Duration	Airline	Flight
from $72 Find flight	12:35 Chicago Midway	14:19 Denver Denver International	2h 44m	Frontier Airlines	F92209
from $111 Find flight	05:00 Chicago O'Hare International	06:41 Denver Denver International	2h 41m	United Airlines	UA2666
from $111 Find flight	08:49 Chicago O'Hare International	10:35 Denver Denver International	2h 46m	United Airlines	UA250
from $111 Find flight	16:10 Chicago O'Hare International	17:56 Denver Denver International	2h 46m	United Airlines	UA1801
from $111 Find flight	21:32 Chicago O'Hare International	23:18 Denver Denver International	2h 46m	United Airlines	UA2296
from $111 Find flight	20:08 Chicago O'Hare International	21:59 Denver Denver International	2h 51m	United Airlines	UA1555
from $112 Find flight	07:15 Chicago O'Hare International	08:59 Denver Denver International	2h 44m	United Airlines	UA791
from $113 Find flight	06:00 Chicago O'Hare International	07:41 Denver Denver International	2h 41m	Frontier Airlines	F91483
from $136 Find flight	21:32 Chicago O'Hare International	23:22 Denver Denver International	2h 50m	United Airlines	UA1748
from $184 Find flight	16:10 Chicago O'Hare International	17:56 Denver Denver International	2h 46m	United Airlines	UA1732
from $87 Find flight	16:45 Chicago Midway	23:02 Denver Denver International	7h 17m layover 2h 13m - Dallas	Frontier Airlines	F92999 F94463
from $105 Find flight	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 $106 Find flight	12:50 Chicago Midway	19:31 Denver Denver International	7h 41m layover 1h 40m - Baltimore	Frontier Airlines	F93088 F92705
from $110 Find flight	07:45 Chicago O'Hare International	19:31 Denver Denver International	12h 46m layover 6h 35m - Baltimore	Frontier Airlines	F94064 F92705
from $110 Find flight	20:27 Chicago O'Hare International	08:28+1 день Denver Denver International	13h 1m layover 6h 22m - Philadelphia	Frontier Airlines	F92112 F93339
from $119 Find flight	13:11 Chicago Midway	07:16+1 день Denver Denver International	19h 5m layover 14h 11m - Fletcher	Allegiant Air	G41846 G4233

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*Departure and arrival times - local. Prices indicated for one-way flights. Information updated on July 09, 2025

Flight Schedule Chicago (Illinois) to Denver (Colorado)

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	Flight Details	Flight Duration	Price
05:00 — 06:41	05:00 — 06:41 UA2666 United Airlines Chicago — Denver	2h 41m	Find flight from$111
06:00 — 07:41	06:00 — 07:41 F91483 Frontier Airlines Chicago — Denver	2h 41m	Find flight from$113
07:15 — 08:59	07:15 — 08:59 UA791 United Airlines Chicago — Denver	2h 44m	Find flight from$112
08:45 — 10:35	08:45 — 10:35 UA1599 United Airlines Chicago — Denver	2h 50m	Find flight from$112
08:49 — 10:35	08:49 — 10:35 UA250 United Airlines Chicago — Denver	2h 46m	Find flight from$111
08:49 — 10:35	08:49 — 10:35 UA2154 United Airlines Chicago — Denver	2h 46m	Find flight from$113
12:35 — 14:19	12:35 — 14:19 F92209 Frontier Airlines Chicago — Denver	2h 44m	Find flight from$72
12:55 — 14:37	12:55 — 14:37 UA1484 United Airlines Chicago — Denver	2h 42m	Find flight from$118
12:55 — 14:37	12:55 — 14:37 UA2479 United Airlines Chicago — Denver	2h 42m	Find flight from$119
13:04 — 14:46	13:04 — 14:46 UA622 United Airlines Chicago — Denver	2h 42m	Find flight from$118
13:58 — 15:39	13:58 — 15:39 UA503 United Airlines Chicago — Denver	2h 41m	Find flight from$118
14:16 — 16:02	14:16 — 16:02 UA767 United Airlines Chicago — Denver	2h 46m	Find flight from$112
14:53 — 16:35	14:53 — 16:35 UA664 United Airlines Chicago — Denver	2h 42m	Find flight from$118
14:53 — 16:35	14:53 — 16:35 UA2048 United Airlines Chicago — Denver	2h 42m	Find flight from$119
16:10 — 17:56	16:10 — 17:56 UA1801 United Airlines Chicago — Denver	2h 46m	Find flight from$111
16:10 — 17:56	16:10 — 17:56 UA1732 United Airlines Chicago — Denver	2h 46m	Find flight from$184
19:01 — 20:45	19:01 — 20:45 F91227 Frontier Airlines Chicago — Denver	2h 44m	Find flight from$117
20:08 — 21:59	20:08 — 21:59 UA1555 United Airlines Chicago — Denver	2h 51m	Find flight from$111
20:08 — 21:58	20:08 — 21:58 UA2040 United Airlines Chicago — Denver	2h 50m	Find flight from$112
20:10 — 22:00	20:10 — 22:00 UA2394 United Airlines Chicago — Denver	2h 50m	Find flight from$155
21:32 — 23:18	21:32 — 23:18 UA2296 United Airlines Chicago — Denver	2h 46m	Find flight from$111
21:32 — 23:22	21:32 — 23:22 UA1748 United Airlines Chicago — Denver	2h 50m	Find flight from$136
06:51 — 15:17	13:39 — 15:59 F91855 Frontier Airlines Chicago — San Diego 2h 12m stop 12:05 — 15:42 F94928 Frontier Airlines San Diego — Denver	9h 26m including layover	Find flight from$131
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$110
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$177
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$181
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$106
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$115
15:50 — 23:47	15:50 — 18:50 HA6164 Hawaiian Airlines Chicago — San Diego 1h 29m stop 20:19 — 23:47 HA6403 Hawaiian Airlines San Diego — Denver	8h 57m including layover	Find flight from$198
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$87
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$107
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$113
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$105
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$110
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$113
11:07 — 17:54 +1 day	11:07 — 14:56 G42467 Allegiant Air Chicago — Punta Gorda 21h 41m stop 12:37 — 14:25 G4857 Allegiant Air Punta Gorda — Fletcher 2h 14m stop 16:39 — 17:54 G4227 Allegiant Air Fletcher — Denver	31h 47m including layover	Find flight from$196

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

*Departure and arrival times - local. Updated on July 9, 2025

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 45m.

The fastest flight 2h 41m
Average flight time 2h 45m
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 $), may (from 123 $), october (from 118 $).

What is the lowest airfare Chicago to Denver?

The cheapest plane ticket found by our users is $72. This airfare is for economy class on one-way F92209 flight by Frontier Airlines for August 15, 2025 which leaves Midway in Chicago at 12:35 am and arrives at Denver Denver International at 14:19.

Economy class

$72

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Business class

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First class

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Popular Airlines on the Route

The flight Chicago — Denver is served by 8 regular airlines and 4 low-cost airlines. Most of the flights on this route are operated by Frontier Airlines - 18 departures per week at the price of from $ 72 . And the most expensive tickets are offered by Aer Lingus airline - from $ 1759.

Direct flights

There are 22 nonstop flights on the route. The fastest direct flight is UA2666 by United Airlines takes 2h 41m and the cheapest is F92209 by Frontier Airlines for $72.

F9 - Frontier Airlines

from $72

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UA - United Airlines

from $111

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Connecting Flights

There are 215 flights with layovers on the route. The fastest connecting flight is UA1139 by United Airlines takes 4h 24m and the cheapest is F92209 by Frontier Airlines for $87.

F9 - Frontier Airlines

from $87

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UA - United Airlines

from $181

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AS - Alaska Airlines

from $170

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EI - Aer Lingus

from $1759

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SY - Sun Country Airlines

from $130

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HA - Hawaiian Airlines

from $169

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G4 - Allegiant Air

from $119

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NK - Spirit Airlines

from $207

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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 $105
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Midway-MDW

from $72
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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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Airplanes

There are flights to Denver from Chicago by 8 airlines that use 3 aircraft brands. They range from huge modern airplanes to small-sized.

Boeing 737-900

from $376

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Airbus A320

from $528

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Airbus A319

from $620

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Top Domestic Destinations from Chicago

You may also consider searching for discounted plane tickets to some other popular places from Chicago within United States.

Chicago — Las Vegas

from $508

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Chicago — New York

from $74

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Chicago — Atlanta

from $76

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Chicago — Orlando

from $62

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Chicago — Miami

from $66

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Chicago — Dallas

from $70

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Chicago — Houston

from $66

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Chicago — Boston

from $61

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Chicago — Phoenix

from $65

Find
Chicago — Denver

from $61

Find

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.

Chicago — London

from $60

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Chicago — Cancun

from $72

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Chicago — Toronto

from $73

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Chicago — Paris

from $61

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Chicago — Rome

from $79

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Chicago — Hyderabad

from $73

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Chicago — Mexico City

from $76

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Chicago — Tokyo

from $60

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Chicago — Dublin

from $59

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Chicago — Mumbai

from $74

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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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