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

Frontier, United Airlines, and Southwest are the most popular carriers operating from Denver Intl to Chicago O'Hare Intl

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

As of September 2025, 56 flights take off from Denver and land in Chicago O'Hare Intl Airport each day. The most common flight departure time for this route is 2:00PM, with 46% of daily flights taking off in the afternoon.

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

As of September 2025, 394 flights take off from Denver and land in Chicago O'Hare Intl Airport each week. The most common flight departure day for this route is Mon, with 16% of weekly flights taking off on this day.

What airlines fly to Chicago O'Hare Intl Airport?

United Airlines, Frontier and American Airlines are the top three most popular airlines that fly to Chicago O'Hare Intl Airport from Denver according to our data. United Airlines is the first choice among our users, with 31% of people opting to fly with this airline when traveling to Chicago O'Hare Intl Airport. Keep in mind that there are 4 different airlines that fly to Chicago O'Hare Intl Airport on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Denver Intl Airport to Chicago O'Hare Intl Airport?

Prices for flights from Denver Intl Airport to Chicago O'Hare Intl Airport are refreshed on a daily basis.

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

As of September 2025, there are 4 operators available to choose from for flights from Denver Intl Airport to Chicago O'Hare Intl Airport.

How old do you have to be to fly from Denver Intl Airport 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 Denver Intl Airport to Chicago O'Hare Intl Airport.

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

The required travel and health documents for your Chicago O'Hare Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Chicago O'Hare Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$62 Cheap Flights from Denver to Chicago O'Hare Intl Airport in 2025/26

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Find the cheapest flights from Denver to Chicago

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

8:22 pm - 11:53 pmDEN-ORD

2h 31mnonstop

1:14 pm - 7:36 amORD-DEN

19h 22m1 stop

$116Frontier

Find Deal

Wed, Oct 22 - Sat, Oct 25

5:45 pm - 10:45 pmDEN-ORD

28h 00m1 stop

7:15 am - 9:04 amORD-DEN

2h 49mnonstop

$117Frontier

Find Deal

Sat, Oct 4 - Wed, Oct 8

8:13 pm - 11:41 pmDEN-ORD

26h 28m1 stop

6:00 am - 7:41 amORD-DEN

2h 41mnonstop

$118Frontier

Find Deal

Thu, Nov 6 - Mon, Nov 10

12:36 am - 7:10 amDEN-ORD

29h 34m1 stop

6:00 am - 7:41 amORD-DEN

2h 41mnonstop

$119Frontier

Find Deal

Sat, Oct 25 - Fri, Oct 31

6:00 am - 9:37 amDEN-ORD

2h 37mnonstop

5:28 pm - 11:43 pmORD-DEN

7h 15m1 stop

$120Frontier

Find Deal

Mon, Oct 6 - Wed, Oct 8

9:19 pm - 12:59 amDEN-ORD

2h 40mnonstop

5:50 am - 8:43 amORD-DEN

27h 53m1 stop

$121Frontier

Find Deal

Fri, Oct 17 - Sun, Oct 19

12:59 am - 10:41 amDEN-ORD

8h 42m1 stop

7:20 am - 9:09 amORD-DEN

2h 49mnonstop

$122Frontier

Find Deal

Wed, Nov 12 - Wed, Nov 19

5:45 pm - 10:45 pmDEN-ORD

28h 00m1 stop

8:25 am - 10:16 amORD-DEN

2h 51mnonstop

$123Frontier

Find Deal

Wed, Oct 1 - Sat, Oct 4

8:22 pm - 11:53 pmDEN-ORD

2h 31mnonstop

7:05 am - 8:54 amORD-DEN

2h 49mnonstop

$124Frontier

Find Deal

Wed, Oct 8 - Sat, Oct 11

6:10 am - 5:13 pmDEN-ORD

10h 03m1 stop

6:50 am - 8:31 amORD-DEN

2h 41mnonstop

$147Multiple Airlines

Find Deal

Wed, Oct 15 - Thu, Oct 16

Frontier flights from Denver to Chicago O'Hare Intl Airport

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

Frontier

Oct 22

DEN8:22 pmDenver Intl

2h 31m

ORD11:53 pmChicago O'Hare Intl

Oct 25

ORD1:14 pmChicago O'Hare Intl

19h 22m

1 stop

DEN7:36 amDenver Intl

$116

Find similar

Frontier

Oct 4

DEN5:45 pmDenver Intl

28h 00m

1 stop

ORD10:45 pmChicago O'Hare Intl

Oct 8

ORD7:15 amChicago O'Hare Intl

2h 49m

DEN9:04 amDenver Intl

$117

Find similar

Frontier

Oct 1

DEN5:50 pmDenver Intl

2h 38m

ORD9:28 pmChicago O'Hare Intl

Oct 4

ORD8:25 amChicago O'Hare Intl

2h 51m

DEN10:16 amDenver Intl

$118

Find similar

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

DenverChicago

DEN - ORD

DENORD

Denver Intl

Wed 10/22

8:22 pm-11:53 pm

Nonstop2h 31m

Chicago O'Hare Intl

Sat 10/25

1:14 pm-7:36 am

1 stop19h 22m

$116

DenverChicago

DEN - ORD

DENORD

Denver Intl

Sat 10/4

5:45 pm-10:45 pm

1 stop28h 00m

Chicago O'Hare Intl

Wed 10/8

7:15 am-9:04 am

Nonstop2h 49m

$117

DenverChicago

DEN - ORD

DENORD

Denver Intl

Thu 11/6

8:13 pm-11:41 pm

1 stop26h 28m

Chicago O'Hare Intl

Mon 11/10

6:00 am-7:41 am

Nonstop2h 41m

$118

DenverChicago

DEN - ORD

DENORD

Denver Intl

Sat 10/25

12:36 am-7:10 am

1 stop29h 34m

Chicago O'Hare Intl

Fri 10/31

6:00 am-7:41 am

Nonstop2h 41m

$119

DenverChicago

DEN - ORD

DENORD

Denver Intl

Mon 10/6

6:00 am-9:37 am

Nonstop2h 37m

Chicago O'Hare Intl

Wed 10/8

5:28 pm-11:43 pm

1 stop7h 15m

$120

DenverChicago

DEN - ORD

DENORD

Denver Intl

Fri 10/17

9:19 pm-12:59 am

Nonstop2h 40m

Chicago O'Hare Intl

Sun 10/19

5:50 am-8:43 am

1 stop27h 53m

$121

DenverChicago

DEN - ORD

DENORD

Denver Intl

Wed 11/12

12:59 am-10:41 am

1 stop8h 42m

Chicago O'Hare Intl

Wed 11/19

7:20 am-9:09 am

Nonstop2h 49m

$122

DenverChicago

DEN - ORD

DENORD

Denver Intl

Wed 10/1

5:45 pm-10:45 pm

1 stop28h 00m

Chicago O'Hare Intl

Sat 10/4

8:25 am-10:16 am

Nonstop2h 51m

$123

DenverChicago

DEN - ORD

DENORD

Denver Intl

Wed 10/8

8:22 pm-11:53 pm

Nonstop2h 31m

Chicago O'Hare Intl

Sat 10/11

7:05 am-8:54 am

Nonstop2h 49m

$124

DenverChicago

DEN - ORD

DENORD

Denver Intl

Wed 10/15

6:10 am-5:13 pm

1 stop10h 03m

Chicago O'Hare Intl

Thu 10/16

6:50 am-8:31 am

Nonstop2h 41m

$147

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 Denver 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 February is another great option to travel to Chicago O'Hare Intl Airport, with average flight prices from Denver averaging around $201.

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 $330. 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 Denver because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $561.

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 Denver in the evening is the least expensive time of day to depart. momondo users have found prices as low as $201 when looking at flights departing in the evening. Try not to purchase tickets at noon because they tend to be around $676. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

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

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

You are more likely to see cheaper flights to Chicago O'Hare Intl Airport from Denver when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago O'Hare Intl Airport for around $231 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 Denver for as low as $194 on momondo.

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

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

How have Denver to Chicago O'Hare Intl Airport flight prices changed over time?

As of September 2025, prices for Denver to Chicago O'Hare Intl Airport flights are approximately 42% cheaper when compared to flights at the same time last year.

When to book flights from Denver to Chicago O'Hare Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Denver to Chicago O'Hare Intl Airport according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Denver to Chicago O'Hare Intl Airport (DEN to ORD) flight deals and tips

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

Best Price Found	$115
Fastest flight time	2h 25m
Direct flights	Every day

The best one-way flight to Chicago O'Hare Intl Airport from Denver in the past 72 hours is $115. The best round-trip flight deal from Denver to Chicago O'Hare Intl Airport found on momondo in the last 72 hours is $212.

The fastest flight from Denver to Chicago O'Hare Intl Airport takes 2h 25m

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

Search flight deals

How far is Denver Intl to Chicago O'Hare Intl by plane?
The distance between Denver Intl and Chicago O'Hare Intl is about 903.7 mi. Typically, this will take 2h 29m by plane in normal conditions.
When did momondo last update prices for flights from Denver Intl Airport to Chicago O'Hare Intl Airport?
Prices for flights from Denver Intl Airport to Chicago O'Hare Intl Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Denver Intl Airport to Chicago O'Hare Intl Airport?
As of September 2025, there are 4 operators available to choose from for flights from Denver Intl Airport to Chicago O'Hare Intl Airport.
How old do you have to be to fly from Denver Intl Airport 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 Denver Intl Airport to Chicago O'Hare Intl Airport.
What documentation or ID do you need to fly to Chicago O'Hare Intl Airport?
The required travel and health documents for your Chicago O'Hare Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Chicago O'Hare Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Denver to Chicago O'Hare Intl Airport?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Denver to Chicago O'Hare Intl Airport is Airbus A321neo (13.09% of total bookings). The next most popular plane models are Boeing 737-800 (11.14%), Boeing 737-800 Passenger/BBJ2 (winglets) (9.63%), and Boeing 757-300 (9.23%).
What is the most popular airline from Denver to Chicago O'Hare Intl Airport?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Denver to Chicago O'Hare Intl Airport is Frontier (30% of total bookings). The next most popular airlines are United Airlines (29%), American Airlines (28%), and Southwest (14%).

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

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

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $62	Free Cancellation	Rating 5.8 3,173 reviews	Search Frontier flights
Southwest	PriceFrom $152	Free Cancellation	Rating 8.0 4,242 reviews	Search Southwest flights
American Airlines	PriceFrom $156	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
United Airlines	PriceFrom $165	Free Cancellation	Rating 7.4 8,926 reviews	Search United Airlines flights

Southwest Flights From Denver to Chicago O'Hare Intl Airport
Southwest operates around 17 flights from Denver to Chicago O'Hare Intl Airport every week. The average price of these flights found in the last 72 hours has been $250, but momondo users have found Southwest deals from Denver to Chicago O'Hare Intl Airport from as low as $152 round-trip. Southwest has been scored 8.0/10 in 4,242 reviews.
United Airlines Flights From Denver to Chicago O'Hare Intl Airport
$165 is the best United Airlines flight deal from Denver to Chicago O'Hare Intl Airport found on momondo over the last 72 hours. The average United Airlines ticket price found was closer to $304, however, with flight time and availability significantly affecting the price. United Airlines (7.4/10 from 8,926 user reviews) flies into Chicago O'Hare Intl Airport from Denver 65 times in an average week so prices can vary.

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Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Denver to Chicago. momondo saves you time and could save you money on your trip.

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

Flights from Denver to Chicago with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once you have performed a search for Denver to Chicago flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes momondo offers price alerts on flights to Chicago from Denver. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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

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Cheap flights from Denver to Chicago from $62

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Denver to Chicago departing on 11/4. 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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Big names and deals

Filter for what you want

Filter for what you want

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Find the cheapest flights from Denver to Chicago

Cheap round-trip flights

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Frontier flights from Denver to Chicago O'Hare Intl Airport

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

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Use the filters below to find and compare flights from Denver 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 Denver 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

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

The month of February is another great option to travel to Chicago O'Hare Intl Airport, with average flight prices from Denver averaging around $201.

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 Denver Intl to Chicago O'Hare Intl flight route?

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

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

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

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

How have Denver to Chicago O'Hare Intl Airport flight prices changed over time?

As of September 2025, prices for Denver to Chicago O'Hare Intl Airport flights are approximately 42% cheaper when compared to flights at the same time last year.

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

Frontier, United Airlines, and Southwest are the most popular carriers operating from Denver Intl to Chicago O'Hare Intl

What airlines fly to Chicago O'Hare Intl Airport?

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

As of September 2025, 56 flights take off from Denver and land in Chicago O'Hare Intl Airport each day. The most common flight departure time for this route is 2:00PM, with 46% of daily flights taking off in the afternoon.

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

As of September 2025, 394 flights take off from Denver and land in Chicago O'Hare Intl Airport each week. The most common flight departure day for this route is Mon, with 16% of weekly flights taking off on this day.

When to book flights from Denver to Chicago O'Hare Intl Airport

Cheap Denver to Chicago O'Hare Intl Airport (DEN to ORD) flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

How far is Denver Intl to Chicago O'Hare Intl by plane?

When did momondo last update prices for flights from Denver Intl Airport to Chicago O'Hare Intl Airport?

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

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

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

What is the most popular plane model from Denver to Chicago O'Hare Intl Airport?

What is the most popular airline from Denver to Chicago O'Hare Intl Airport?

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

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

Southwest Flights From Denver to Chicago O'Hare Intl Airport

United Airlines Flights From Denver to Chicago O'Hare Intl Airport

Traveling to a place near Chicago?

Why use momondo?

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

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

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

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

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

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Chicago

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Popular flights according to clicks in the last 7 days on momondo