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

$54 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Southwest and United Airlines, with prices starting from $80 and $80, 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 - Colorado Springs.

What are the cheapest flights from Chicago to Colorado?

Looking for the cheapest flight from Chicago to Colorado? While on average our users pay $619, our data indicates the cheapest price to be $58. The most popular route (Chicago O'Hare Intl - Denver Intl), is priced around $138.

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 (90%), Copa Airlines (90%), United Airlines( 87%).

What are the most popular airlines that fly from Chicago to Colorado?

When booking a flight from Chicago to Colorado, you may want to consider flying on American Airlines, Frontier or United Airlines as they are the most popular for this route.

How far in advance should I book a flight from Chicago to Colorado?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 31 days in advance, which can save you up to 67% on flights from Chicago to Colorado compared to booking the week you need them. Waiting 31 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $169. For sooner than that we have options available in the next 3 days from $293.

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

Due to multiple factors, expect to potentially pay more when booking in December. For low rates, September can be a great choice for travel to Colorado. Flights to Colorado from Chicago in September are about $179 on average during September, but can be found for as low as $48.

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.

$54+ Flights from Chicago to Colorado

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Cheap flight deals from Chicago to Colorado

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$108 (Cheapflightsfares)
One-way from	$54 (Cheapflightsfares)
Popular in	December
Cheapest in	September
Average price	$218
Good round-trip deal	$141 or less
Good one-way deal	$99 or less

Provider with most accurate pricing for Chicago (CHI)-Denver Intl flight deals.

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Provider most trusted by Cheapflights users for Chicago (CHI)-Denver Intl flights.

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From Chicago (CHI) to Colorado

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One-way flight from Chicago (CHI) to Colorado

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Highest demand for flights based on searches. 6% potential increase in price ($11 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($5 potential savings vs. average RT price).

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Average for round-trip flights in March 2025

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Price to beat on a round-trip flight from Chicago (CHI) to Colorado.

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Price to beat on a one-way flight from Chicago (CHI) to Colorado.

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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 March 28, 2025.

Thu 5/18:03 pmMDW - DEN

Nonstop2h 53mFrontier

Mon 5/53:42 pmDEN - MDW

Nonstop2h 26mFrontier

Deal found 3/27

$105

Thu 4/176:45 amORD - DEN

Nonstop2h 57mFrontier

Mon 4/219:08 pmDEN - ORD

Nonstop2h 29mFrontier

Deal found 3/27

$110

Wed 5/215:50 amMDW - DEN

Nonstop2h 35mSouthwest

Tue 5/277:25 pmDEN - MDW

Nonstop2h 25mSouthwest

Deal found 3/27

$159

Wed 5/217:10 amORD - DEN

Nonstop2h 56mUnited Airlines

Sat 5/316:00 amDEN - ORD

Nonstop2h 41mUnited Airlines

Deal found 3/27

$159

Mon 5/59:45 pmORD - DEN

Nonstop2h 48mAmerican Airlines

Thu 5/83:49 pmDEN - ORD

Nonstop2h 34mAmerican Airlines

Deal found 3/27

$169

Mon 4/1411:54 amORD - DEN

1 stop6h 15mMultiple Airlines

Wed 4/169:08 pmDEN - ORD

Nonstop2h 29mMultiple Airlines

Deal found 3/27

$172

Wed 4/231:30 pmORD - DEN

1 stop8h 05mSouthwest

Sat 4/267:30 pmDEN - ORD

Nonstop2h 35mSouthwest

Deal found 3/27

$174

Thu 4/247:15 pmORD - DEN

1 stop23h 27mSun Country Air

Thu 5/16:30 pmDEN - ORD

1 stop23h 39mSun Country Air

Deal found 3/27

$210

Mon 5/56:45 pmMDW - DEN

1 stop5h 55mDelta

Thu 5/87:00 amDEN - MDW

1 stop4h 28mDelta

Deal found 3/27

$217

Fri 4/185:30 amORD - DEN

1 stop7h 52mDelta

Mon 4/216:20 amDEN - ORD

1 stop5h 19mDelta

Deal found 3/27

$217

Wed 4/162:50 pmMDW - COS

Nonstop2h 35mSouthwest

Tue 5/61:50 pmCOS - MDW

Nonstop2h 20mSouthwest

Deal found 3/25

$255

Tue 5/69:30 amORD - COS

Nonstop3h 05mUnited Airlines

Tue 5/65:15 pmCOS - ORD

1 stop6h 14mUnited Airlines

Deal found 3/27

$265

Best flights from Chicago to Colorado
Discover carefully curated flight deals from Chicago to Colorado that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 28, 2025.

Mon 4/216:40 amORD - DEN

Nonstop2h 54mFrontier

Mon 4/288:16 pmDEN - ORD

Nonstop2h 22mFrontier

Deal found 3/28

$108

Wed 5/217:10 amORD - DEN

Nonstop2h 56mUnited Airlines

Sat 5/316:00 amDEN - ORD

Nonstop2h 41mUnited Airlines

Deal found 3/27

$159

Wed 5/215:50 amMDW - DEN

Nonstop2h 35mSouthwest

Tue 5/277:25 pmDEN - MDW

Nonstop2h 25mSouthwest

Deal found 3/27

$159

Mon 5/59:45 pmORD - DEN

Nonstop2h 48mAmerican Airlines

Thu 5/83:49 pmDEN - ORD

Nonstop2h 34mAmerican Airlines

Deal found 3/27

$169

Mon 4/1411:54 amORD - DEN

1 stop6h 15mMultiple Airlines

Wed 4/169:08 pmDEN - ORD

Nonstop2h 29mMultiple Airlines

Deal found 3/27

$172

Thu 4/247:15 pmORD - DEN

1 stop23h 27mSun Country Air

Thu 5/16:30 pmDEN - ORD

1 stop23h 39mSun Country Air

Deal found 3/27

$210

Mon 5/58:03 pmMDW - DEN

Nonstop2h 53mFrontier

Thu 5/83:42 pmDEN - MDW

Nonstop2h 26mFrontier

Deal found 3/27

$108

Thu 5/19:55 amORD - DEN

1 stop6h 50mDelta

Sun 5/412:55 amDEN - ORD

1 stop6h 00mDelta

Deal found 3/27

$217

Mon 4/284:00 pmORD - DEN

1 stop8h 20mSouthwest

Tue 4/297:30 pmDEN - ORD

Nonstop2h 35mSouthwest

Deal found 3/27

$174

Wed 5/219:20 amMDW - DEN

1 stop5h 10mDelta

Tue 5/276:00 amDEN - MDW

1 stop6h 15mDelta

Deal found 3/26

$217

Tue 5/69:30 amORD - COS

Nonstop3h 05mUnited Airlines

Tue 5/65:15 pmCOS - ORD

1 stop6h 14mUnited Airlines

Deal found 3/27

$265

Mon 8/186:00 amORD - ASE

1 stop6h 46mAmerican Airlines

Thu 8/2112:21 pmASE - ORD

Nonstop2h 49mAmerican Airlines

Deal found 3/27

$274

Last-minute flights from Chicago to Colorado
Discover last-minute flight deals from Chicago to Colorado. Data last updated March 28, 2025 and is based on user searches.

Tue 4/110:44 amORD - DEN

Nonstop2h 55mUnited Airlines

Sat 4/56:02 amDEN - ORD

Nonstop2h 32mUnited Airlines

Deal found 3/27

$539

Wed 4/27:30 amORD - DEN

2 stops8h 45mSouthwest

Wed 4/93:15 pmDEN - ORD

1 stop5h 15mSouthwest

Deal found 3/27

$298

Wed 4/28:30 amMDW - DEN

1 stop6h 00mSouthwest

Wed 4/912:50 pmDEN - MDW

2 stops5h 50mSouthwest

Deal found 3/27

$298

Wed 4/212:15 pmORD - DEN

1 stop5h 43mDelta

Sun 4/612:55 amDEN - ORD

1 stop6h 39mDelta

Deal found 3/27

$357

Thu 4/35:00 amORD - GJT

1 stop6h 48mUnited Airlines

Sun 4/66:12 pmGJT - ORD

1 stop5h 23mUnited Airlines

Deal found 3/27

$419

Thu 4/310:05 amMDW - COS

Nonstop2h 40mSouthwest

Thu 4/102:10 pmCOS - MDW

Nonstop2h 20mSouthwest

Deal found 3/27

$517

Thu 4/35:00 amORD - EGE

1 stop6h 39mUnited Airlines

Thu 4/103:20 pmEGE - ORD

1 stop6h 42mUnited Airlines

Deal found 3/27

$540

Thu 4/310:10 amORD - EGE

Nonstop2h 57mAmerican Airlines

Thu 4/108:00 amEGE - ORD

1 stop6h 21mAmerican Airlines

Deal found 3/27

$584

Fri 4/48:25 amORD - DEN

2 stops36h 57mMultiple Airlines

Sun 4/68:50 pmDEN - ORD

Nonstop2h 20mMultiple Airlines

Deal found 3/26

$302

Sat 4/56:45 amORD - DEN

Nonstop2h 57mFrontier

Wed 4/99:08 pmDEN - ORD

Nonstop2h 29mFrontier

Deal found 3/27

$136

Sat 4/56:45 amMDW - DEN

Nonstop2h 50mFrontier

Sat 4/128:55 pmDEN - MDW

Nonstop2h 26mFrontier

Deal found 3/28

$138

Sat 4/51:12 pmMDW - DEN

1 stop6h 20mDelta

Fri 4/1112:55 amDEN - MDW

1 stop6h 48mDelta

Deal found 3/28

$293

One-way flights from Chicago to Colorado
Search for one-way flight options from Chicago to Colorado. Find affordable one-way fares based on user searches. Data last updated March 28, 2025.

Mon 4/285:24 pmORD - DEN

Nonstop2h 57mFrontier

Deal found 3/28

$54

Thu 4/176:45 amMDW - DEN

Nonstop2h 50mFrontier

Deal found 3/27

$55

Tue 5/207:45 pmORD - DEN

Nonstop2h 55mUnited Airlines

Deal found 3/27

$80

Sat 4/268:15 amMDW - DEN

Nonstop2h 40mSouthwest

Deal found 3/27

$80

Mon 5/269:05 pmORD - DEN

1 stop15h 22mSun Country Air

Deal found 3/27

$93

Mon 4/284:00 pmORD - DEN

1 stop8h 20mSouthwest

Deal found 3/28

$95

Thu 4/175:30 amORD - DEN

1 stop6h 39mDelta

Deal found 3/27

$109

Sat 4/1910:20 amMDW - DEN

1 stop7h 48mDelta

Deal found 3/27

$109

Tue 4/227:35 pmORD - COS

Nonstop3h 04mUnited Airlines

Deal found 3/27

$128

Tue 4/292:50 pmMDW - COS

Nonstop2h 35mSouthwest

Deal found 3/26

$128

Sun 4/279:30 amORD - COS

1 stop24h 45mMultiple Airlines

Deal found 3/27

$130

Sun 4/275:00 amORD - DEN

1 stop5h 47mAmerican Airlines

Deal found 3/28

$133

Cheapflights Fare Finder

Use the filters below to find and compare flights from Chicago to Colorado that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoDenver

MDW - DEN

MDWDEN

Chicago Midway

Thu 5/1

8:03 pm-9:56 pm

Nonstop2h 53m

Denver Intl

Mon 5/5

3:42 pm-7:08 pm

Nonstop2h 26m

$105

ChicagoDenver

ORD - DEN

ORDDEN

Chicago O'Hare Intl

Thu 4/17

6:45 am-8:42 am

Nonstop2h 57m

Denver Intl

Mon 4/21

9:08 pm-12:37 am

Nonstop2h 29m

$110

ChicagoDenver

MDW - DEN

MDWDEN

Chicago Midway

Wed 5/21

5:50 am-7:25 am

Nonstop2h 35m

Denver Intl

Tue 5/27

7:25 pm-10:50 pm

Nonstop2h 25m

$159

ChicagoDenver

ORD - DEN

ORDDEN

Chicago O'Hare Intl

Wed 5/21

7:10 am-9:06 am

Nonstop2h 56m

Denver Intl

Sat 5/31

6:00 am-9:41 am

Nonstop2h 41m

$159

ChicagoDenver

ORD - DEN

ORDDEN

Chicago O'Hare Intl

Mon 5/5

9:45 pm-11:33 pm

Nonstop2h 48m

Denver Intl

Thu 5/8

3:49 pm-7:23 pm

Nonstop2h 34m

$169

ChicagoDenver

ORD - DEN

ORDDEN

Chicago O'Hare Intl

Mon 4/14

11:54 am-5:09 pm

1 stop6h 15m

Denver Intl

Wed 4/16

9:08 pm-12:37 am

Nonstop2h 29m

$172

ChicagoDenver

ORD - DEN

ORDDEN

Chicago O'Hare Intl

Wed 4/23

1:30 pm-8:35 pm

1 stop8h 05m

Denver Intl

Sat 4/26

7:30 pm-11:05 pm

Nonstop2h 35m

$174

ChicagoDenver

ORD - DEN

ORDDEN

Chicago O'Hare Intl

Thu 4/24

7:15 pm-5:42 pm

1 stop23h 27m

Denver Intl

Thu 5/1

6:30 pm-7:09 pm

1 stop23h 39m

$210

ChicagoDenver

MDW - DEN

MDWDEN

Chicago Midway

Mon 5/5

6:45 pm-11:40 pm

1 stop5h 55m

Denver Intl

Thu 5/8

7:00 am-12:28 pm

1 stop4h 28m

$217

ChicagoDenver

ORD - DEN

ORDDEN

Chicago O'Hare Intl

Fri 4/18

5:30 am-12:22 pm

1 stop7h 52m

Denver Intl

Mon 4/21

6:20 am-12:39 pm

1 stop5h 19m

$217

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Showing 1-10 of 60 results

...

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, October is the cheapest month in which you can book a flight from Chicago to Colorado (average of $197). Flying from Chicago to Colorado in March is currently the most expensive (average of $278). 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?

When flying from Chicago to Colorado, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Chicago to Colorado

The most flights from CHI to USCO are scheduled on a Friday (57 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (8 on average).

Rainfall in Colorado by month

In terms of precipitation, rainfall in Colorado ranges from 0.5 - 2.3 inches per month. May is typically the wettest month, when rainfall can reach 2.3 in. January is typically the driest time to visit Colorado when rainfall is around 0.5 in.

Temperature in Colorado by month

If weather is an important factor for your trip to Colorado, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

Reviews of airlines servicing Colorado

Read reviews from past customers who have flown Southwest, Alaska Airlines and Delta from Chicago to Colorado. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Southwest

8.1

Very good

4,274 reviews

Reviews

1 / 20

2.0

Mediocre

Steven,Feb 2025

BZN - DEN

Bozeman Airport knows how to deal with snow. I saw many airlines leave with only small delays due to the foot of snow. Our plane was 4 hours delayed. I missed my connection in Denver with a 3.5 hour layover. Because of that, the best you Southwest could do was make me wait more hours, them send me to Chicago Midway, where I had to wait overnight, for 7 more hours until a flight to RSW was available. Nobody at Southwest told me that Midway shuts down after 8pm. Everything was closed. I had no idea. You just dumped me there. I am a 65 year old man and you dumped me in Midway without even a couch to lie on. I was awake 21 hours because of this. No, it was not an act of God. Other airlines were moving passengers out. It was incompetence Shame on you.

Southwest

8.1

Very good

4,274 reviews

Southwest

8.1

Very good

4,274 reviews

Reviews

1 / 20

2.0

Mediocre

Steven,Feb 2025

BZN - DEN

Alaska Airlines

8.0

Very good

9,798 reviews

Southwest

8.1

Very good

4,274 reviews

Reviews

1 / 20

2.0

Mediocre

Steven,Feb 2025

BZN - DEN

Delta

8.0

Very good

7,897 reviews

Southwest

8.1

Very good

4,274 reviews

Reviews

1 / 20

2.0

Mediocre

Steven,Feb 2025

BZN - DEN

United Airlines

7.4

Good

8,603 reviews

Southwest

8.1

Very good

4,274 reviews

Reviews

1 / 20

2.0

Mediocre

Steven,Feb 2025

BZN - DEN

Allegiant Air

7.3

Good

731 reviews

Southwest

8.1

Very good

4,274 reviews

Reviews

1 / 20

2.0

Mediocre

Steven,Feb 2025

BZN - DEN

Related info for your journey

What are the cheapest airlines to fly from Chicago to Colorado one-way?
$54 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Southwest and United Airlines, with prices starting from $80 and $80, 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 - Colorado Springs.
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 (90%), Copa Airlines (90%), United Airlines( 87%).
What are the cheapest flights from Chicago to Colorado?
Looking for the cheapest flight from Chicago to Colorado? While on average our users pay $619, our data indicates the cheapest price to be $58. The most popular route (Chicago O'Hare Intl - Denver Intl), is priced around $138.
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, October is the cheapest month in which you can book a flight from Chicago to Colorado (average of $197). Flying from Chicago to Colorado in March is currently the most expensive (average of $278). 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

Top 4 airlines flying from Chicago to Colorado

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$43	Average$125	FlexibilityNo cancel fee	On-time62%
American Airlines	Cheapest$146	Average$439	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$150	Average$510	FlexibilityNo cancel fee	On-time69%
Southwest	Cheapest$158	Average$326	FlexibilityNo cancel fee	On-time63%

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$54+ 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 4/28. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Chicago to Colorado with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

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 March 28, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Chicago to Colorado

Cheapest flights from Chicago to ColoradoExplore 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 March 28, 2025.

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 March 28, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Chicago to Colorado that are best for you.

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.

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?

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 March 28, 2025.

Weekly flight availability from Chicago to Colorado

Explore weekly flight availability from Chicago to Colorado. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated March 28, 2025.

Rainfall in Colorado by month

Plan your trip to Colorado by taking into account the average rainfall totals by month.

Temperature in Colorado by month

Plan your trip to Colorado by taking into account the average temperature totals by month.

Reviews of airlines servicing Colorado

Read reviews from past customers who have flown Southwest, Alaska Airlines and Delta from Chicago to Colorado. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

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.

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

What are the most popular routes from Chicago to Colorado?

What are the most reliable airlines from Chicago to Colorado?

What are the cheapest flights from Chicago to Colorado?

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

How can I find direct flights from Chicago to Colorado?

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

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

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.

Top 4 airlines flying from Chicago to Colorado

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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 March 28, 2025.