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

One way Round trip

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On Cheapflightsplus.com you will find 3 direct and 27 connecting flights from Chicago to Denver. You can compare airfare deals from 5 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 42m and the fastest connecting – 4h 40m.

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 $112 Find flight	20:10 Chicago O'Hare International	22:00 Denver Denver International	2h 50m	United Airlines	UA2040
from $119 Find flight	13:04 Chicago O'Hare International	14:46 Denver Denver International	2h 42m	United Airlines	UA622
from $101 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 $142 Find flight	18:17 Chicago O'Hare International	11:24+1 день Denver Denver International	18h 7m layover 14h 21m - Minneapolis	Sun Country Airlines	SY260 SY1609
from $151 Find flight	13:11 Chicago Midway	07:16+1 день Denver Denver International	19h 5m layover 14h 11m - Fletcher	Allegiant Air	G41846 G4233
from $188 Find flight	06:00 Chicago Midway	08:27+1 день Denver Denver International	27h 27m layover 22h 42m - Dallas	Frontier Airlines	F91887 F92147
from $189 Find flight	14:15 Chicago O'Hare International	10:15+1 день Denver Denver International	21h 0m layover 14h 57m - Phoenix	Frontier Airlines	F91829 F91376
from $226 Find flight	21:50 Chicago O'Hare International	06:40+1 день Denver Denver International	9h 50m layover 6h 2m - Minneapolis	United Airlines	UA2627 UA2041
from $279 Find flight	18:16 Chicago O'Hare International	08:57+1 день Denver Denver International	15h 41m layover 9h 49m - Atlanta	Frontier Airlines	F91442 F93293
from $305 Find flight	18:16 Chicago O'Hare International	21:17+1 день Denver Denver International	28h 1m layover 22h 3m - Atlanta	Frontier Airlines	F91442 F91449
from $324 Find flight	05:20 Chicago O'Hare International	08:27+1 день Denver Denver International	28h 7m layover 23h 17m - Dallas	Frontier Airlines	F93243 F92147
from $382 Find flight	05:01 Chicago O'Hare International	08:57+1 день Denver Denver International	28h 56m layover 23h 28m - Atlanta	Frontier Airlines	F91596 F93293
from $230 Find flight	16:36 Chicago O'Hare International	07:16+1 день Denver Denver International	15h 40m layover 1h 10m - Orlando 6h 37m - Fletcher	Spirit Airlines	NK1370 G41844 G4233
from $259 Find flight	19:03 Chicago O'Hare International	16:07+1 день Denver Denver International	22h 4m layover 2h 21m - Los Angeles 9h 24m - Minneapolis	Spirit Airlines	NK1117 SY430 SY655
from $260 Find flight	10:00 Chicago O'Hare International	07:16+1 день Denver Denver International	22h 16m layover 7h 49m - Orlando 6h 37m - Fletcher	Spirit Airlines	NK1113 G41844 G4233

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*Departure and arrival times - local. Prices indicated for one-way flights. Information updated on August 20, 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
12:35 — 14:19	12:35 — 14:19 F92209 Frontier Airlines Chicago — Denver	2h 44m	Find flight from$72
13:04 — 14:46	13:04 — 14:46 UA622 United Airlines Chicago — Denver	2h 42m	Find flight from$119
20:10 — 22:00	20:10 — 22:00 UA2040 United Airlines Chicago — Denver	2h 50m	Find flight from$112
05:01 — 08:57 +1 day	05:01 — 08:12 F91596 Frontier Airlines Chicago — Atlanta 23h 28m stop 07:40 — 08:57 F93293 Frontier Airlines Atlanta — Denver	28h 56m including layover	Find flight from$382
05:20 — 08:27 +1 day	05:20 — 07:58 F93243 Frontier Airlines Chicago — Dallas 23h 17m stop 07:15 — 08:27 F92147 Frontier Airlines Dallas — Denver	28h 7m including layover	Find flight from$324
06:00 — 08:27 +1 day	06:00 — 08:33 F91887 Frontier Airlines Chicago — Dallas 22h 42m stop 07:15 — 08:27 F92147 Frontier Airlines Dallas — Denver	27h 27m including layover	Find flight from$188
07:24 — 13:01	07:24 — 09:03 UA2232 United Airlines Chicago — Minneapolis 2h 42m stop 11:45 — 13:01 UA594 United Airlines Minneapolis — Denver	6h 37m including layover	Find flight from$656
07:25 — 12:16	07:25 — 09:13 UA3700 United Airlines Chicago — Nashville 1h 6m stop 10:19 — 12:16 UA502 United Airlines Nashville — Denver	5h 51m including layover	Find flight from$801
10:00 — 18:01	10:00 — 13:18 UA2661 United Airlines Chicago — New York 2h 7m stop 15:25 — 18:01 UA498 United Airlines New York — Denver	9h 1m including layover	Find flight from$647
11:01 — 14:59	11:01 — 12:27 UA5731 United Airlines Chicago — Lake Saint Louis 1h 15m stop 13:42 — 14:59 UA2625 United Airlines Lake Saint Louis — Denver	4h 58m including layover	Find flight from$827
13:11 — 07:16 +1 day	10:31 — 13:09 G41846 Allegiant Air Chicago — Fletcher 14h 11m stop 06:00 — 07:16 G4233 Allegiant Air Fletcher — Denver	19h 5m including layover	Find flight from$151
14:15 — 10:15 +1 day	14:15 — 16:21 F91829 Frontier Airlines Chicago — Phoenix 14h 57m stop 07:18 — 10:15 F91376 Frontier Airlines Phoenix — Denver	21h including layover	Find flight from$189
14:40 — 19:27	14:40 — 16:19 UA1872 United Airlines Chicago — Minneapolis 1h 45m stop 18:04 — 19:27 UA370 United Airlines Minneapolis — Denver	5h 47m including layover	Find flight from$476
15:00 — 21:26	15:00 — 18:20 UA1946 United Airlines Chicago — New York 30m stop 18:50 — 21:26 UA1904 United Airlines New York — Denver	7h 26m including layover	Find flight from$647
18:16 — 08:57 +1 day	18:16 — 21:51 F91442 Frontier Airlines Chicago — Atlanta 9h 49m stop 07:40 — 08:57 F93293 Frontier Airlines Atlanta — Denver	15h 41m including layover	Find flight from$279
18:17 — 11:24 +1 day	18:15 — 19:55 SY260 Sun Country Airlines Chicago — Minneapolis 14h 21m stop 15:54 — 17:01 SY1609 Sun Country Airlines Minneapolis — Denver	18h 7m including layover	Find flight from$142
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$101
21:50 — 06:40 +1 day	21:50 — 23:28 UA2627 United Airlines Chicago — Minneapolis 6h 2m stop 05:30 — 06:40 UA2041 United Airlines Minneapolis — Denver	9h 50m including layover	Find flight from$226
10:00 — 07:16 +1 day	10:00 — 13:39 NK1113 Spirit Airlines Chicago — Orlando 7h 49m stop 21:33 — 23:23 G41844 Allegiant Air Orlando — Fletcher 6h 37m stop 06:00 — 07:16 G4233 Allegiant Air Fletcher — Denver	22h 16m including layover	Find flight from$260
16:34 — 16:07 +1 day	16:34 — 20:29 NK1871 Spirit Airlines Chicago — Fort Myers 15h 11m stop 11:40 — 14:15 SY384 Sun Country Airlines Fort Myers — Minneapolis 45m stop 15:00 — 16:07 SY655 Sun Country Airlines Minneapolis — Denver	24h 33m including layover	Find flight from$519
16:36 — 07:16 +1 day	16:36 — 20:23 NK1370 Spirit Airlines Chicago — Orlando 1h 10m stop 21:33 — 23:23 G41844 Allegiant Air Orlando — Fletcher 6h 37m stop 06:00 — 07:16 G4233 Allegiant Air Fletcher — Denver	15h 40m including layover	Find flight from$230
19:03 — 16:07 +1 day	18:20 — 20:53 NK1117 Spirit Airlines Chicago — Los Angeles 2h 21m stop 23:55 — 05:36 SY430 Sun Country Airlines Los Angeles — Minneapolis 9h 24m stop 15:12 — 16:23 SY655 Sun Country Airlines Minneapolis — Denver	22h 4m including layover	Find flight from$259

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

*Departure and arrival times - local. Updated on August 20, 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 05:01 to 21:50 from 7 Chicago airports and arrive 05:01 to 21:50 to 2 Denver airports. Average flight time is 2h 44m.

The fastest flight 2h 42m
Average flight time 2h 44m
The earliest flight 05:01
The latest flight 21:50
Distance 900 ml

The cheapest months to travel to Denver are august (from 72 $), july (from 77 $), june (from 101 $).

The most expensive months are april (from 223 $), may (from 125 $), june (from 101 $).

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 8, 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 5 regular airlines and 4 low-cost airlines. Most of the flights on this route are operated by Frontier Airlines - 8 departures per week at the price of from $ 72 . And the most expensive tickets are offered by United Airlines airline - from $ 860.

Direct flights

There are 3 nonstop flights on the route. The fastest direct flight is UA622 by United Airlines takes 2h 42m and the cheapest is F92209 by Frontier Airlines for $72.

F9 - Frontier Airlines

from $72

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UA - United Airlines

from $112

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Connecting Flights

There are 27 flights with layovers on the route. The fastest connecting flight is UA1872 by United Airlines takes 4h 40m and the cheapest is F92209 by Frontier Airlines for $101.

F9 - Frontier Airlines

from $101

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UA - United Airlines

from $226

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SY - Sun Country Airlines

from $142

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G4 - Allegiant Air

from $151

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NK - Spirit Airlines

from $230

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See more connecting flights

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 $101
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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 5 airlines that use 0 aircraft brands. They range from huge modern airplanes to small-sized.

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

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Chicago — Denver

from $61

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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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