Cheap Flights from Chicago, IL to Denver, CO from $68

Return flight: Denver – Chicago

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 $68, 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.

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 68 $), july (from 73 $), october (from 96 $).

The most expensive months are april (from 211 $), may (from 118 $), june (from 96 $).

What is the lowest airfare Chicago to Denver?

The cheapest plane ticket found by our users is $68. 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
$68
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Business class
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First class
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Flight Schedule Chicago (Illinois) to Denver (Colorado)

05:20 — 08:27+1day
28h 7m flight time
Find flight
from$307
05:20 — 07:58 Chicago — Dallas
F93243 Frontier Airlines
23h 17m stop
07:15 — 08:27 Dallas — Denver
F92147 Frontier Airlines
06:00 — 08:27+1day
27h 27m flight time
Find flight
from$178
06:00 — 08:33 Chicago — Dallas
F91887 Frontier Airlines
22h 42m stop
07:15 — 08:27 Dallas — Denver
F92147 Frontier Airlines
10:00 — 07:16+1day
22h 16m flight time
Find flight
from$246
10:00 — 13:39 Chicago — Orlando
NK1113 Spirit Airlines
7h 49m stop
21:33 — 23:23 Orlando — Fletcher
G41844 Allegiant Air
6h 37m stop
06:00 — 07:16 Fletcher — Denver
G4233 Allegiant Air
12:35 — 14:19
2h 44m flight time
Find flight
from$68
Chicago — Denver
F92209 Frontier Airlines
13:04 — 14:46
2h 42m flight time
Find flight
from$112
Chicago — Denver
UA622 United Airlines
13:11 — 07:16+1day
19h 5m flight time
Find flight
from$143
10:31 — 13:09 Chicago — Fletcher
G41846 Allegiant Air
14h 11m stop
06:00 — 07:16 Fletcher — Denver
G4233 Allegiant Air
14:15 — 10:15+1day
21h flight time
Find flight
from$179
14:15 — 16:21 Chicago — Phoenix
F91829 Frontier Airlines
14h 57m stop
07:18 — 10:15 Phoenix — Denver
F91376 Frontier Airlines
16:36 — 07:16+1day
15h 40m flight time
Find flight
from$218
16:36 — 20:23 Chicago — Orlando
NK1370 Spirit Airlines
1h 10m stop
21:33 — 23:23 Orlando — Fletcher
G41844 Allegiant Air
6h 37m stop
06:00 — 07:16 Fletcher — Denver
G4233 Allegiant Air
18:16 — 08:57+1day
15h 41m flight time
Find flight
from$264
18:16 — 21:51 Chicago — Atlanta
F91442 Frontier Airlines
9h 49m stop
07:40 — 08:57 Atlanta — Denver
F93293 Frontier Airlines
18:16 — 21:17+1day
28h 1m flight time
Find flight
from$288
18:16 — 21:51 Chicago — Atlanta
F91442 Frontier Airlines
22h 3m stop
19:54 — 21:17 Atlanta — Denver
F91449 Frontier Airlines
18:17 — 11:24+1day
18h 7m flight time
Find flight
from$135
18:15 — 19:55 Chicago — Minneapolis
SY260 Sun Country Airlines
14h 21m stop
15:54 — 17:01 Minneapolis — Denver
SY1609 Sun Country Airlines
19:03 — 16:07+1day
22h 4m flight time
Find flight
from$245
18:20 — 20:53 Chicago — Los Angeles
NK1117 Spirit Airlines
2h 21m stop
23:55 — 05:36 Los Angeles — Minneapolis
SY430 Sun Country Airlines
9h 24m stop
15:12 — 16:23 Minneapolis — Denver
SY655 Sun Country Airlines
20:10 — 22:00
2h 50m flight time
Find flight
from$106
Chicago — Denver
UA2040 United Airlines
20:27 — 08:28+1day
13h 1m flight time
Find flight
from$96
19:04 — 22:30 Chicago — Philadelphia
F92112 Frontier Airlines
6h 22m stop
06:15 — 08:29 Philadelphia — Denver
F93339 Frontier Airlines
21:50 — 06:40+1day
9h 50m flight time
Find flight
from$214
21:50 — 23:28 Chicago — Minneapolis
UA2627 United Airlines
6h 2m stop
05:30 — 06:40 Minneapolis — Denver
UA2041 United Airlines
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 and arrival times - local. Updated on October 7, 2025.

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 $ 68 . And the most expensive tickets are offered by United Airlines airline - from $ 814.

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 $68.

  • F9 - Frontier Airlines
    from $68
    Find
  • UA - United Airlines
    from $106
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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 $96.

  • F9 - Frontier Airlines
    from $96
    Find
  • SY - Sun Country Airlines
    from $135
    Find
  • UA - United Airlines
    from $214
    Find
  • G4 - Allegiant Air
    from $143
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  • NK - Spirit Airlines
    from $218
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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 $96
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  • Midway-MDW
    from $68
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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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How to book a plane 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 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.

    To find a plane ticket, please select dates.

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