HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Colorado

$70+ Cheap flights from Chicago (CHI) to Colorado

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 1/25. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — DEN
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Chicago to Colorado with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Chicago to Colorado

Keep the following information in mind while searching for Chicago to Colorado flight deals. Data was last updated October 30, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$94
(CheapOair)

One-way from

$70
(Kiwi.com)

Popular in

December

Cheapest in

November

Average price

$200

Good round-trip deal

$143 or less

Good one-way deal

$106 or less
Provider with most accurate pricing for Chicago (CHI)-Denver Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Denver Intl flights.
Search Deals
From Chicago (CHI) to Colorado
Search Deals
One-way flight from Chicago (CHI) to Colorado
Search Deals
High demand for flights, 3% potential price rise
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($4 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals
Price to beat on a round-trip flight from Chicago (CHI) to Colorado.
Search Deals
Price to beat on a one-way flight from Chicago (CHI) to Colorado.
Search Deals

Find flight deals from Chicago to Colorado

Cheapest flights from Chicago to Colorado
Explore the most affordable flight options available from Chicago to Colorado. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 10/28. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/116:05 pmORD - DEN
Nonstop2h 54mFrontier
Mon 11/1712:59 amDEN - ORD
1 stop9h 15mFrontier
Deal found 10/28$94
This Kiwi.com deal was found by Cheapflights users on 10/29. 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 11/126:05 pmORD - DEN
Nonstop2h 54mFrontier
Sat 11/157:59 pmDEN - ORD
Nonstop2h 30mFrontier
Deal found 10/29$95
This CheapOair deal was found by Cheapflights users on 10/30. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/56:00 amORD - DEN
1 stop15h 25mFrontier
Mon 12/88:45 pmDEN - ORD
Nonstop2h 27mFrontier
Deal found 10/30$96
This CheapOair deal was found by Cheapflights users on 10/30. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/58:42 pmMDW - DEN
1 stop13h 20mFrontier
Mon 12/87:45 amDEN - MDW
Nonstop2h 23mFrontier
Deal found 10/30$96
This Cheapflightsfares deal was found by Cheapflights users on 10/28. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/45:15 amORD - DEN
1 stop15h 35mFrontier
Sun 12/78:45 pmDEN - ORD
Nonstop2h 27mFrontier
Deal found 10/28$97
This Priceline deal was found by Cheapflights users on 10/29. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/243:31 pmMDW - DEN
Nonstop2h 51mFrontier
Tue 12/212:59 amDEN - MDW
1 stop6h 47mFrontier
Deal found 10/29$97
This Priceline deal was found by Cheapflights users on 10/30. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/207:00 amORD - DEN
Nonstop3h 00mFrontier
Thu 12/48:45 pmDEN - ORD
Nonstop2h 27mFrontier
Deal found 10/30$98
This Frontier deal was found by Cheapflights users on 10/30. 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 11/277:00 amORD - DEN
Nonstop3h 00mFrontier
Thu 11/278:45 pmDEN - ORD
Nonstop2h 25mFrontier
Deal found 10/30$99
This Kiwi.com deal was found by Cheapflights users on 10/28. 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 11/267:00 amORD - DEN
Nonstop3h 00mFrontier
Thu 11/278:45 pmDEN - ORD
Nonstop2h 25mFrontier
Deal found 10/28$100
This Kiwi.com deal was found by Cheapflights users on 10/28. 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.
Mon 11/176:00 amORD - DEN
Nonstop2h 41mFrontier
Mon 11/178:44 pmDEN - ORD
Nonstop2h 31mFrontier
Deal found 10/28$101
This Priceline deal was found by Cheapflights users on 10/27. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/146:00 amORD - DEN
Nonstop2h 41mFrontier
Tue 11/184:00 pmDEN - ORD
Nonstop2h 38mFrontier
Deal found 10/27$102
This Mytrip deal was found by Cheapflights users on 10/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/111:56 pmMDW - DEN
1 stop20h 07mFrontier
Thu 11/138:05 amDEN - MDW
Nonstop2h 25mFrontier
Deal found 10/28$103

Cheapflights Fare Finder

 
Customize your flight search to find flights from Chicago to Colorado 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 October 30, 2025.
Use the filters below to find and compare flights from Chicago to Colorado that are best for you.

Fly from

Chicago

Fly to

Colorado

Route

Depart

Return

Price

ChicagoDenver

MDW - DEN

MDWDEN

Chicago Midway

Thu 1/8

6:00 am-7:50 am

Nonstop2h 50m

Denver Intl

Sun 1/11

5:25 am-8:55 am

Nonstop2h 30m

$155

ChicagoDenver

MDW - DEN

MDWDEN

Chicago Midway

Tue 1/13

6:00 am-7:50 am

Nonstop2h 50m

Denver Intl

Tue 1/20

1:25 pm-4:45 pm

Nonstop2h 20m

$176

ChicagoDenver

MDW - DEN

MDWDEN

Chicago Midway

Sat 1/10

5:10 am-7:00 am

Nonstop2h 50m

Denver Intl

Wed 1/14

9:45 am-1:10 pm

Nonstop2h 25m

$176

ChicagoDenver

ORD - DEN

ORDDEN

Chicago O'Hare Intl

Thu 1/22

1:45 pm-9:05 pm

2 stops8h 20m

Denver Intl

Mon 1/26

6:20 am-3:25 pm

1 stop8h 05m

$180

ChicagoDenver

MDW - DEN

MDWDEN

Chicago Midway

Thu 12/4

7:02 pm-11:17 pm

1 stop5h 15m

Denver Intl

Tue 12/9

6:15 am-12:34 pm

1 stop5h 19m

$197

ChicagoDenver

MDW - DEN

MDWDEN

Chicago Midway

Mon 12/8

6:00 am-12:11 pm

1 stop7h 11m

Denver Intl

Mon 12/8

4:44 pm-11:47 pm

1 stop6h 03m

$197

ChicagoDenver

MDW - DEN

MDWDEN

Chicago Midway

Wed 1/14

6:45 am-1:37 pm

1 stop7h 52m

Denver Intl

Tue 1/20

6:05 am-12:48 pm

1 stop5h 43m

$197

ChicagoDenver

MDW - DEN

MDWDEN

Chicago Midway

Wed 12/3

12:50 pm-8:30 pm

1 stop8h 40m

Denver Intl

Tue 12/9

6:15 am-12:34 pm

1 stop5h 19m

$197

ChicagoDenver

MDW - DEN

MDWDEN

Chicago Midway

Thu 12/4

7:05 am-8:45 am

Nonstop2h 40m

Denver Intl

Mon 12/8

9:40 am-1:00 pm

Nonstop2h 20m

$197

ChicagoDenver

MDW - DEN

MDWDEN

Chicago Midway

Wed 1/21

6:17 pm-12:28 am

1 stop7h 11m

Denver Intl

Sun 1/25

1:16 pm-10:26 pm

1 stop8h 10m

$197

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 60 results
1
2
3
...
6

Best time to book a flight from Chicago to Colorado

Have a flexible travel schedule? Discover the best time to fly to Colorado from Chicago 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 Chicago to Colorado

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

Currently, March is the cheapest month in which you can book a flight from Chicago to Colorado (average of $52). Flying from Chicago to Colorado in July is currently the most expensive (average of $114). 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 CHI to CO?

Find hourly flight availability from Chicago to Colorado. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 30, 2025.

It’s typically best to fly out from Chicago to Colorado in the afternoon. Doing so could potentially save you 12% on the flight price compared to flying in the morning, which is usually more expensive.

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

Use this chart to determine the cheapest time to fly round-trip from Chicago to Colorado. Price data was last updated on December 16, 2024.

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

Reviews of airlines servicing Colorado

Get insights into the airlines that provide service to Colorado. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Colorado. Reviews last updated October 30, 2025.
Get a feel of what it's like to fly with Southwest, United Airlines, and American Airlines from Chicago to Colorado by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Southwest
8.0
Very good
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
United Airlines
7.4
Good
8,998 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
American Airlines
7.2
Good
11,030 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Frontier
5.8
Fair
3,123 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.

Related info for your journey

Find useful and relevant information for your journey from Chicago to Colorado. 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 Chicago to Colorado?

    A quick flight from Chicago to Colorado can take about 2h 50m. Southwest provides one of the quickest options available for as low as $155. Airlines will cover a distance of 893 mi. This flight may include one or multiple stops.

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

    $78 is the cheapest one-way deal found within the past few days, from Southwest. You may also be able to find cheap deals on United Airlines and American Airlines, with prices starting from $78 and $131, respectively.

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

    The most popular flight routes from Chicago to Colorado are Chicago O'Hare Intl - Denver Intl, Chicago Midway - Denver Intl and Chicago O'Hare Intl - Vail Eagle County.

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

    Before booking your flight to Colorado from Chicago, check out the most reliable airlines to get you to your destination on time: Frontier (83%), Southwest (80%), Copa Airlines( 79%).

  • What are the cheapest flights from Chicago to Colorado?

    Looking for the cheapest flight from Chicago to Colorado? While on average our users pay $658, our data indicates the cheapest price to be $81. The most popular route (Chicago O'Hare Intl - Denver Intl), is priced around $97.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Chicago to Colorado 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 Chicago to Colorado?

    Currently, March is the cheapest month in which you can book a flight from Chicago to Colorado (average of $52). Flying from Chicago to Colorado in July is currently the most expensive (average of $114). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Chicago to Colorado

See prices for flight routes from nearby airports that may be better suited for you.
O'Hare Intl to John F Kennedy Intl flights
O'Hare Intl to Sky Harbor Intl flights
O'Hare Intl to Dallas/Fort Worth flights
O'Hare Intl to Las Vegas flights
O'Hare Intl to LaGuardia flights
O'Hare Intl to Newark flights
O'Hare Intl to Orlando flights
O'Hare Intl to Miami flights
O'Hare Intl to Fort Lauderdale flights
O'Hare Intl to Los Angeles flights
O'Hare Intl to Tampa flights
O'Hare Intl to Denver flights
O'Hare Intl to Atlanta flights
O'Hare Intl to San Francisco flights
O'Hare Intl to Fort Myers flights
O'Hare Intl to Seattle flights
O'Hare Intl to Boston flights
Midway to Dallas/Fort Worth flights
O'Hare Intl to Dulles Intl flights
O'Hare Intl to Ontario flights
O'Hare Intl to Baltimore flights
Midway to John F Kennedy Intl flights
O'Hare Intl to New Orleans flights
O'Hare Intl to Reagan-National flights
O'Hare Intl to Santa Ana flights
Midway to Miami flights
Midway to LaGuardia flights
Midway to Los Angeles flights
Midway to Atlanta flights
O'Hare Intl to Austin flights
O'Hare Intl to George Bush Intcntl flights
O'Hare Intl to Hobby flights
O'Hare Intl to West Palm Beach flights
O'Hare Intl to San Diego flights
O'Hare Intl to Honolulu flights
Midway to Orlando flights
Midway to Baltimore flights
O'Hare Intl to Nashville flights
O'Hare Intl to Salt Lake City flights
O'Hare Intl to Philadelphia flights
St. Louis to Las Vegas flights
Midway to Sky Harbor Intl flights
Midway to Hobby flights
Midway to Denver flights
Midway to Las Vegas flights
Midway to Tampa flights
St. Louis to LaGuardia flights
O'Hare Intl to Sarasota flights
O'Hare Intl to Charlotte flights
O'Hare Intl to Love Field flights

Top 4 airlines flying from Chicago to Colorado

Discover the top 4 airlines that operate flights from Chicago to Colorado. 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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$59Average$159FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$152Average$410FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$157Average$317FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$160Average$480FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.