What is the cheapest airline that flies from Colorado to Chicago O'Hare Intl?

United Airlines, Delta, and American Airlines are the most popular carriers operating from Colorado to Chicago O'Hare Intl

What airlines fly to Chicago O'Hare Intl Airport?

United Airlines, American Airlines and Frontier are the top three most popular airlines that fly to Chicago O'Hare Intl Airport from Colorado according to our data. United Airlines is the first choice among our users, with 44% of people opting to fly with this airline when traveling to Chicago O'Hare Intl Airport. Keep in mind that there are 5 different airlines that fly to Chicago O'Hare Intl Airport on a routine basis, so you have a few additional options to choose from.

How many flights depart from Colorado to Chicago O'Hare Intl Airport on average per week?

As of June 2026, there are 468 flights per week flying from Colorado to Chicago O'Hare Intl Airport. The most common day of the week flights depart is Thu, with 19% of flights taking off on this day.

How many flights depart from Colorado to Chicago O'Hare Intl Airport on average per day?

66 flights are operational daily from Colorado to Chicago O'Hare Intl Airport as of June 2026. The most popular departure time for this route is 9:00AM, with 47% of flights per day taking off in the afternoon.

How long does it take to fly to Chicago O'Hare Intl Airport?

On average, it takes 2h 23m to fly from Colorado to Chicago O'Hare Intl Airport if you fly out of Denver (the most popular airport in Colorado) and into Chicago O'Hare Intl Airport (the most popular airport in Chicago O'Hare Intl Airport). If you’re flying out of Colorado Springs and into Chicago O'Hare Intl Airport, then the flight time is around 2h 43m.

How many operators does momondo search for flights from Colorado to Chicago O'Hare Intl Airport?

As of June 2026, there are 5 operators available to choose from for flights from Colorado to Chicago O'Hare Intl Airport.

How old do you have to be to fly from Colorado to Chicago O'Hare Intl Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Colorado to Chicago O'Hare Intl Airport.

What documentation or ID do you need to fly to Chicago O'Hare Intl Airport?

The travel and health documents you'll need for your trip to Chicago O'Hare Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Chicago O'Hare Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$103 Cheap Flights from Colorado to Chicago O'Hare Intl Airport in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Colorado to Chicago

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:05 pm - 8:52 pm

DEN

ORD

2h 47mnonstop

9:57 pm - 11:57 pm

ORD

DEN

3h 00mnonstop

$180Frontier

Wed, Jul 29 - Thu, Aug 6

5:05 pm - 8:52 pm

DEN

ORD

2h 47mnonstop

9:57 pm - 11:57 pm

ORD

DEN

3h 00mnonstop

$181Frontier

Fri, Jul 31 - Fri, Aug 7

12:37 pm - 4:30 pm

COS

ORD

2h 53mnonstop

10:56 am - 12:47 pm

ORD

COS

2h 51mnonstop

$271American Airlines

Tue, Aug 25 - Sat, Aug 29

5:13 pm - 12:18 am

COS

ORD

6h 05m

1 stop

10:56 am - 12:47 pm

ORD

COS

2h 51mnonstop

$281American Airlines

Tue, Aug 25 - Sat, Aug 29

12:40 pm - 4:50 pm

MTJ

ORD

3h 10mnonstop

9:15 am - 11:48 am

ORD

MTJ

3h 33mnonstop

$289United Airlines

Thu, Aug 20 - Mon, Aug 24

8:10 am - 6:19 pm

COS

ORD

9h 09m

1 stop

3:25 pm - 9:38 pm

ORD

COS

7h 13m

1 stop

$291Delta

Tue, Aug 11 - Tue, Aug 18

5:06 pm - 11:57 pm

COS

ORD

5h 51m

1 stop

8:45 am - 11:02 am

ORD

COS

3h 17mnonstop

$293United Airlines

Mon, Nov 2 - Tue, Nov 10

5:55 pm - 9:34 am

COS

ORD

14h 39m

2 stops

1:15 pm - 9:21 pm

ORD

COS

9h 06m

1 stop

$296Delta

Sat, Oct 31 - Tue, Nov 10

8:35 pm - 5:37 am

GJT

ORD

32h 02m

2 stops

7:15 am - 12:13 pm

ORD

GJT

29h 58m

1 stop

$437Multiple Airlines

Mon, Jul 20 - Mon, Jul 27

1:23 pm - 5:37 am

GJT

ORD

15h 14m

1 stop

7:15 am - 12:13 pm

ORD

GJT

29h 58m

1 stop

$447Multiple Airlines

Sun, Jul 12 - Wed, Jul 15

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Frontier flights from Colorado to Chicago O'Hare Intl Airport

Our best Frontier deals on Colorado to Chicago O'Hare Intl Airport flight tickets

Frontier

Jul 29

DEN5:05 pmDenver Intl

2h 47m

ORD8:52 pmChicago O'Hare Intl

Aug 6

ORD9:57 pmChicago O'Hare Intl

3h 00m

DEN11:57 pmDenver Intl

$180

Frontier

Jul 31

DEN5:05 pmDenver Intl

2h 47m

ORD8:52 pmChicago O'Hare Intl

Aug 7

ORD9:57 pmChicago O'Hare Intl

3h 00m

DEN11:57 pmDenver Intl

$181

Frontier

Aug 13

DEN5:05 pmDenver Intl

2h 47m

ORD8:52 pmChicago O'Hare Intl

Aug 18

ORD2:41 pmChicago O'Hare Intl

3h 04m

DEN4:45 pmDenver Intl

$182

United Airlines flights from Colorado to Chicago O'Hare Intl Airport

Our best United Airlines deals on Colorado to Chicago O'Hare Intl Airport flight tickets

United Airlines

Aug 8

DEN7:10 pmDenver Intl

2h 39m

ORD10:49 pmChicago O'Hare Intl

Aug 10

ORD9:50 pmChicago O'Hare Intl

2h 59m

DEN11:49 pmDenver Intl

$216

United Airlines

Aug 20

MTJ12:40 pmMontrose County

3h 10m

ORD4:50 pmChicago O'Hare Intl

Aug 24

ORD9:15 amChicago O'Hare Intl

3h 33m

MTJ11:48 amMontrose County

$289

United Airlines

Jul 15

COS12:11 pmColorado Springs

2h 45m

ORD3:56 pmChicago O'Hare Intl

Jul 29

ORD9:06 amChicago O'Hare Intl

3h 03m

COS11:09 amColorado Springs

$290

momondo Fare Finder

Use the filters below to find and compare flights from Colorado to Chicago O'Hare Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverChicago

DEN - ORD

DENORD

Denver Intl

Wed 7/29

5:05 pm-8:52 pm

Nonstop2h 47m

Chicago O'Hare Intl

Thu 8/6

9:57 pm-11:57 pm

Nonstop3h 00m

$180

DenverChicago

DEN - ORD

DENORD

Denver Intl

Fri 7/31

5:05 pm-8:52 pm

Nonstop2h 47m

Chicago O'Hare Intl

Fri 8/7

9:57 pm-11:57 pm

Nonstop3h 00m

$181

Quickest round-trip

Colorado SpringsChicago

COS - ORD

COSORD

Colorado Springs

Tue 8/25

12:37 pm-4:30 pm

Nonstop2h 53m

Chicago O'Hare Intl

Sat 8/29

10:56 am-12:47 pm

Nonstop2h 51m

$271

Colorado SpringsChicago

COS - ORD

COSORD

Colorado Springs

Tue 8/25

5:13 pm-12:18 am

1 stop6h 05m

Chicago O'Hare Intl

Sat 8/29

10:56 am-12:47 pm

Nonstop2h 51m

$281

MontroseChicago

MTJ - ORD

MTJORD

Montrose County

Thu 8/20

12:40 pm-4:50 pm

Nonstop3h 10m

Chicago O'Hare Intl

Mon 8/24

9:15 am-11:48 am

Nonstop3h 33m

$289

Colorado SpringsChicago

COS - ORD

COSORD

Colorado Springs

Tue 8/11

8:10 am-6:19 pm

1 stop9h 09m

Chicago O'Hare Intl

Tue 8/18

3:25 pm-9:38 pm

1 stop7h 13m

$291

Colorado SpringsChicago

COS - ORD

COSORD

Colorado Springs

Mon 11/2

5:06 pm-11:57 pm

1 stop5h 51m

Chicago O'Hare Intl

Tue 11/10

8:45 am-11:02 am

Nonstop3h 17m

$293

Colorado SpringsChicago

COS - ORD

COSORD

Colorado Springs

Sat 10/31

5:55 pm-9:34 am

2 stops14h 39m

Chicago O'Hare Intl

Tue 11/10

1:15 pm-9:21 pm

1 stop9h 06m

$296

Grand JunctionChicago

GJT - ORD

GJTORD

Grand Junction Regnl

Mon 7/20

8:35 pm-5:37 am

2 stops32h 02m

Chicago O'Hare Intl

Mon 7/27

7:15 am-12:13 pm

1 stop29h 58m

$437

Grand JunctionChicago

GJT - ORD

GJTORD

Grand Junction Regnl

Sun 7/12

1:23 pm-5:37 am

1 stop15h 14m

Chicago O'Hare Intl

Wed 7/15

7:15 am-12:13 pm

1 stop29h 58m

$447

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Colorado to Chicago O'Hare Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Chicago O'Hare Intl Airport?

The month of January is another great option to travel to Chicago O'Hare Intl Airport, with average flight prices from Colorado averaging around $57.

What is the cheapest day to depart on your flight to Chicago O'Hare Intl Airport?

The cheapest day to depart on your flight to Chicago O'Hare Intl Airport is on a Thursday when prices can be found for as low as $320. This is often the case because there is less demand to fly during this day of the week. On the other hand, Sunday is the most expensive day to depart from Colorado because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $537.

What is the cheapest time of day to depart on your flight to Chicago O'Hare Intl Airport?

Flying to Chicago O'Hare Intl Airport from Colorado in the evening is the least expensive time of day to depart. momondo users have found prices as low as $233 when looking at flights departing in the evening. Try not to purchase tickets at noon because they tend to be around $564. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest Colorado to Chicago O'Hare Intl flight route?

Fly from Denver Intl to Chicago O'Hare Intl for the best Colorado - Chicago O'Hare Intl flight prices

How far in advance should I book a flight from Colorado to Chicago O'Hare Intl Airport?

You are more likely to see cheaper flights to Chicago O'Hare Intl Airport from Colorado when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago O'Hare Intl Airport for around $282 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago O'Hare Intl Airport from Colorado for as low as $236 on momondo.

What cabin class options are available on Colorado to Chicago O'Hare Intl Airport flights?

There are 4 cabin classes available to choose from on Colorado to Chicago O'Hare Intl Airport flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Colorado to Chicago O'Hare Intl Airport flights?

No. A direct flight is the cheapest option for a flight between Colorado to Chicago O'Hare Intl Airport.

Cheap Colorado to Chicago O'Hare Intl Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Colorado to Chicago O'Hare Intl Airport

Best Price Found	$158
Fastest flight time	2h 23m
Direct flights	Every day

The best one-way flight to Chicago O'Hare Intl Airport from Colorado in the past 72 hours is $158. The best round-trip flight deal from Colorado to Chicago O'Hare Intl Airport found on momondo in the last 72 hours is $291.

The fastest flight from Colorado to Chicago O'Hare Intl Airport takes 2h 23m

Direct flights go from Colorado to Chicago O'Hare Intl Airport every day.

Search flight deals

Frequently asked questions about flying from Colorado to Chicago O'Hare Intl Airport

When did momondo last update prices for flights from Colorado to Chicago O'Hare Intl Airport?
Prices for flights from Colorado to Chicago O'Hare Intl Airport refresh daily.
How many operators does momondo search for flights from Colorado to Chicago O'Hare Intl Airport?
As of June 2026, there are 5 operators available to choose from for flights from Colorado to Chicago O'Hare Intl Airport.
How old do you have to be to fly from Colorado to Chicago O'Hare Intl Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Colorado to Chicago O'Hare Intl Airport.
What documentation or ID do you need to fly to Chicago O'Hare Intl Airport?
The travel and health documents you'll need for your trip to Chicago O'Hare Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Chicago O'Hare Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Colorado to Chicago O'Hare Intl Airport?
Based on momondo bookings for flights between Colorado and Chicago O'Hare Intl Airport, the leading plane model is Boeing 737-800, making up 16.81% of the total bookings. Other popular models include Airbus A321neo with 15.76%, Airbus A319 with 10.32%, and Airbus A321-100/200 with 9.59%.

Best airlines flying from Colorado to Chicago O'Hare Intl Airport

Compare and see reviews for airlines that fly from Colorado to Chicago O'Hare Intl Airport with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $75	Free Cancellation	Rating 5.6 2,866 reviews	Search Frontier flights
JetBlue	PriceFrom $126	Free Cancellation	Rating 7.1 3,002 reviews	Search JetBlue flights
Southwest	PriceFrom $157	Free Cancellation	Rating 7.9 4,242 reviews	Search Southwest flights
American Airlines	PriceFrom $167	Free Cancellation	Rating 7.1 11,754 reviews	Search American Airlines flights
United Airlines	PriceFrom $176	Free Cancellation	Rating 7.4 9,887 reviews	Search United Airlines flights

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Schaumburg

South Haven

Rockford

Merrillville

Gurnee

Rosemont

Naperville

Orland Park

Oak Brook

New Buffalo

Joliet

Kenosha

Hammond

Aurora

Racine

Janesville

Elgin

Evanston

South Holland

Why use momondo?

Why should I use momondo to find a flight deal from Colorado to Chicago?

It is quick and easy to find Colorado to Chicago flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Chicago that suits you.

Can I find flights from Colorado to Chicago with flexible booking policies on momondo?

All flight searches from Colorado to Chicago on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Colorado to Chicago?

momondo helps you find the best flight between Colorado and Chicago by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Colorado to Chicago right now. Can momondo alert me if prices change?

Price alerts on flights to Chicago from Colorado are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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Cheap flights from Colorado to Chicago from $103

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Colorado to Chicago departing on 7/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Frontier flights from Colorado to Chicago O'Hare Intl Airport

Our best Frontier deals on Colorado to Chicago O'Hare Intl Airport flight tickets

United Airlines flights from Colorado to Chicago O'Hare Intl Airport

Our best United Airlines deals on Colorado to Chicago O'Hare Intl Airport flight tickets

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Use the filters below to find and compare flights from Colorado to Chicago O'Hare Intl Airport that are best for you.

See travel insights to Chicago from

How to get the cheapest flight ticket from Colorado to Chicago O'Hare Intl Airport

What is the cheapest month to fly to Chicago O'Hare Intl Airport?

What is the cheapest day to depart on your flight to Chicago O'Hare Intl Airport?

What is the cheapest time of day to depart on your flight to Chicago O'Hare Intl Airport?

What is the cheapest Colorado to Chicago O'Hare Intl flight route?

How far in advance should I book a flight from Colorado to Chicago O'Hare Intl Airport?

What cabin class options are available on Colorado to Chicago O'Hare Intl Airport flights?

Can stopping save me money on Colorado to Chicago O'Hare Intl Airport flights?

What is the cheapest airline that flies from Colorado to Chicago O'Hare Intl?

What airlines fly to Chicago O'Hare Intl Airport?

How many flights depart from Colorado to Chicago O'Hare Intl Airport on average per day?

How many flights depart from Colorado to Chicago O'Hare Intl Airport on average per week?

How long does it take to fly to Chicago O'Hare Intl Airport?

Cheap Colorado to Chicago O'Hare Intl Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Colorado to Chicago O'Hare Intl Airport

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from Colorado to Chicago O'Hare Intl Airport

Best airlines flying from Colorado to Chicago O'Hare Intl Airport

Compare and see reviews for airlines that fly from Colorado to Chicago O'Hare Intl Airport with momondo

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An easier way to manage your Chicago O'Hare Intl Airport trip

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List of cabin classes available on flights landing in Chicago. Availability may vary depending on flight origin and airline.

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