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$62+ Cheap flights from Colorado to Chicago (CHI)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/10. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — CHI
Jan 16 — Jan 231
Fri 1/16
Fri 1/23
1 adult, Economy
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Cheap flight deals from Colorado to Chicago

Cheapest flights from Colorado to Chicago
Explore the most affordable flight options available from Colorado to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 17, 2025.

This Frontier deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/318:45 pmDEN - ORD
Nonstop2h 27mFrontier
Fri 1/94:30 pmORD - DEN
Nonstop3h 01mFrontier
Deal found 12/15$103
This Kiwi.com deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/318:45 pmDEN - ORD
Nonstop2h 27mMultiple Airlines
Wed 1/74:38 pmORD - DEN
1 stop9h 45mMultiple Airlines
Deal found 12/15$119
This Frontier deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/318:45 pmDEN - ORD
Nonstop2h 27mFrontier
Thu 1/88:00 amORD - DEN
1 stop12h 59mFrontier
Deal found 12/15$120
This Kiwi.com deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/318:45 pmDEN - ORD
Nonstop2h 27mMultiple Airlines
Tue 1/67:57 pmORD - DEN
1 stop16h 29mMultiple Airlines
Deal found 12/15$124
This Frontier deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/307:00 amDEN - MDW
1 stop5h 59mFrontier
Thu 1/812:41 pmMDW - DEN
1 stop9h 57mFrontier
Deal found 12/15$130
This Kiwi.com deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/318:45 pmDEN - ORD
Nonstop2h 27mFrontier
Sun 1/410:49 pmORD - DEN
1 stop30h 09mFrontier
Deal found 12/16$137
This Frontier deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/258:45 pmDEN - ORD
Nonstop2h 27mFrontier
Fri 1/21:27 pmORD - DEN
1 stop11h 58mFrontier
Deal found 12/15$145
This Frontier deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/307:00 amDEN - MDW
1 stop5h 59mFrontier
Fri 1/93:05 pmMDW - DEN
Nonstop2h 49mFrontier
Deal found 12/15$145
This Frontier deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/258:45 pmDEN - ORD
Nonstop2h 27mFrontier
Thu 1/17:00 amORD - DEN
Nonstop2h 56mFrontier
Deal found 12/15$153
This Expedia deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/248:45 pmDEN - ORD
Nonstop2h 27mFrontier
Fri 1/212:26 pmORD - DEN
1 stop20h 49mFrontier
Deal found 12/16$156
This Frontier deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/307:00 amDEN - MDW
1 stop5h 59mFrontier
Tue 1/62:03 pmMDW - DEN
1 stop8h 32mFrontier
Deal found 12/15$163
This Frontier deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/318:45 pmDEN - ORD
Nonstop2h 27mFrontier
Sat 1/312:39 pmORD - DEN
1 stop10h 29mFrontier
Deal found 12/17$165

Find flight deals from Colorado to Chicago

Keep the following information in mind while searching for Colorado to Chicago flight deals. Data was last updated December 17, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$89
(Mytrip)

One-way from

$62
(Trip.com)

Popular in

November

Cheapest in

January

Average price

$243

Good round-trip deal

$155 or less

Good one-way deal

$121 or less
Provider with most accurate pricing for Denver Intl-Chicago (CHI) flight deals.
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Provider most trusted by Cheapflights users for Denver Intl-Chicago (CHI) flights.
Search Deals
From Colorado to Chicago (CHI)
Search Deals
One-way flight from Colorado to Chicago (CHI)
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($27 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Colorado to Chicago (CHI).
Search Deals
Price to beat on a one-way flight from Colorado to Chicago (CHI).
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Colorado to Chicago that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 17, 2025.
Use the filters below to find and compare flights from Colorado to Chicago that are best for you.

Fly from

Colorado

Fly to

Chicago

Route

Depart

Return

Price

DenverChicago

DEN - MDW

DENMDW

Denver Intl

Fri 1/9

10:43 am-2:05 pm

Nonstop2h 22m

Chicago Midway

Mon 1/12

9:15 am-8:05 pm

1 stop11h 50m

$165

DenverChicago

DEN - ORD

DENORD

Denver Intl

Sat 1/17

11:20 am-2:55 pm

Nonstop2h 35m

Chicago O'Hare Intl

Mon 1/19

1:55 pm-3:52 pm

Nonstop2h 57m

$175

DenverChicago

DEN - ORD

DENORD

Denver Intl

Wed 1/21

3:15 pm-6:46 pm

Nonstop2h 31m

Chicago O'Hare Intl

Sat 1/24

3:59 pm-5:57 pm

Nonstop2h 58m

$176

DenverChicago

DEN - MDW

DENMDW

Denver Intl

Wed 1/7

6:25 pm-9:50 pm

Nonstop2h 25m

Chicago Midway

Thu 1/8

10:05 am-11:50 am

Nonstop2h 45m

$183

DenverChicago

DEN - ORD

DENORD

Denver Intl

Sat 1/10

5:42 pm-9:15 pm

Nonstop2h 33m

Chicago O'Hare Intl

Wed 1/14

2:36 pm-4:34 pm

Nonstop2h 58m

$183

DenverChicago

DEN - MDW

DENMDW

Denver Intl

Wed 2/4

4:35 pm-7:55 pm

Nonstop2h 20m

Chicago Midway

Fri 2/6

8:50 pm-10:35 pm

Nonstop2h 45m

$185

DenverChicago

DEN - ORD

DENORD

Denver Intl

Thu 1/8

9:40 am-1:24 pm

Nonstop2h 44m

Chicago O'Hare Intl

Tue 1/13

2:36 pm-4:34 pm

Nonstop2h 58m

$187

DenverChicago

DEN - MDW

DENMDW

Denver Intl

Thu 2/19

2:10 pm-10:34 pm

1 stop7h 24m

Chicago Midway

Fri 2/20

3:00 pm-9:19 pm

1 stop7h 19m

$189

DenverChicago

DEN - ORD

DENORD

Denver Intl

Wed 2/18

6:00 am-1:30 pm

1 stop6h 30m

Chicago O'Hare Intl

Wed 2/25

1:45 pm-9:05 pm

2 stops8h 20m

$190

DenverChicago

DEN - ORD

DENORD

Denver Intl

Wed 12/24

5:45 pm-9:19 pm

Nonstop2h 34m

Chicago O'Hare Intl

Thu 12/25

8:45 am-10:35 am

Nonstop2h 50m

$191

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/15

Showing 1-10 of 60 results
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Best time to book a flight from Colorado to Chicago

Have a flexible travel schedule? Discover the best time to fly to Chicago from Colorado with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Colorado to Chicago

What is the cheapest month to book a flight from Colorado to Chicago?

Currently, January is the cheapest month in which you can book a flight from Colorado to Chicago (average of $57). Flying from Colorado to Chicago in June is currently the most expensive (average of $122). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from CO to CHI?

Find hourly flight availability from Colorado to Chicago. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 17, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 60% on flights from Colorado to Chicago by exploring options for tickets in the evening.

What is the cheapest day to fly from Colorado to Chicago?

Use this chart to determine the cheapest time to fly round-trip from Colorado to Chicago. Price data was last updated on December 13, 2025.

Travelers seeking maximum savings on their Colorado to Chicago flight should consider departing on Tuesday mornings when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Related info for your journey

Find useful and relevant information for your journey from Colorado to Chicago. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Colorado to Chicago?

    Departing from Colorado to Chicago will take you 2h 22m. The distance from Colorado to Chicago is about 893 mi. Generally, flights for this route are nonstop.

  • What are the cheapest airlines to fly from Colorado to Chicago one-way?

    One-way options have recently been found by users for as low as $40 on Frontier. Other airlines that offer cheap prices include Southwest from $78 and American Airlines from $78 one-way.

  • What are the most popular routes from Colorado to Chicago?

    The most popular route from Colorado to Chicago is Denver Intl - Chicago O'Hare Intl. You may also consider Denver Intl - Chicago Midway or Colorado Springs - Chicago O'Hare Intl.

  • What are the most reliable airlines from Colorado to Chicago?

    Consider Volaris (100%), Royal Jordanian (88%) or Copa Airlines (87%) when booking your flight. These represent the most reliable airlines when flying from Colorado to Chicago.

  • What are the cheapest flights from Colorado to Chicago?

    The cheapest flight price from Colorado to Chicago is $41. On average you can expect to pay $935. The most popular route, (Denver Intl - Chicago O'Hare Intl), can usually be booked for $119.

  • Can I find deals for flights from Colorado to Chicago that include hotel bookings?

    Yes. In addition to deals on Colorado to Chicago flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Colorado to Chicago?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Colorado to Chicago.

  • Can I find deals for business class flights from Colorado to Chicago?

    Yes. Cheapflights offers flight deals from Colorado to Chicago by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Colorado to Chicago?

    Currently, January is the cheapest month in which you can book a flight from Colorado to Chicago (average of $57). Flying from Colorado to Chicago in June is currently the most expensive (average of $122). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Lansing
Merrillville
Hammond
Porter
Benton Harbor

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Alternative routes for Colorado to Chicago

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Colorado to Chicago

Discover the top 4 airlines that operate flights from Colorado to Chicago. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$64Average$172FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$156Average$405FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$156Average$278FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$163Average$432FlexibilityNo cancel feeOn-time69%

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