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

Southwest is the most popular carrier operating from Chicago O'Hare Intl to Denver Intl

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

The number of flights available between Chicago O'Hare Intl Airport and Denver is 37 per day as of December 2025. The most frequent departure time is 8:00PM, with 42% of daily flights leaving in the evening.

What airlines fly to Denver?

Frontier, United Airlines and American Airlines are the top three most popular airlines that fly to Denver from Chicago O'Hare Intl Airport according to our data. Frontier is the first choice among our users, with 34% of people opting to fly with this airline when traveling to Denver. Keep in mind that there are 4 different airlines that fly to Denver on a routine basis, so you have a few additional options to choose from.

What is the most punctual flight time for Chicago to Denver flights?

Generally, flights departing in the morning tend to experience fewer delays. Flights in the evening have, in the past, seen delays more frequently in comparison.

Which airline has the best punctuality record on Chicago to Denver flights?

According to our data, Frontier have had the least number of delays on this route over the last 12 months; with about 12% of their flights experiencing any sort of delay.

What day of the week experiences the fewest flight delays on this route?

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

How often are flights from Chicago to Denver delayed?

Historically, on average around 16% of flights between Chicago and Denver have experienced a delay on any given week. The average delay length over the past 12 months has been 149 minutes.

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

As of December 2025, 261 flights take off from Chicago O'Hare Intl Airport and land in Denver each week. The most common flight departure day for this route is Thu, with 18% of weekly flights taking off on this day.

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

Prices for flights from Chicago O'Hare Intl Airport to Denver Intl Airport were last updated today.

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

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Chicago O'Hare Intl Airport to Denver Intl Airport.

What documentation or ID do you need to fly to Denver Intl Airport?

The travel and health documents you'll need for your trip to Denver 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 Denver Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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

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10:07 pm - 11:58 pm

ORD

DEN

2h 51mnonstop

5:41 pm - 9:24 pm

DEN

ORD

2h 43mnonstop

$99Frontier

Sun, Jan 11 - Fri, Jan 16

4:34 pm - 11:29 pm

ORD

DEN

7h 55m1 stop

3:03 pm - 6:46 pm

DEN

ORD

2h 43mnonstop

$100Frontier

Fri, Jan 30 - Thu, Feb 12

12:07 pm - 2:05 pm

ORD

DEN

2h 58mnonstop

7:10 am - 10:57 am

DEN

ORD

2h 47mnonstop

$101Frontier

Sun, Jan 25 - Fri, Jan 30

10:07 pm - 11:58 pm

ORD

DEN

2h 51mnonstop

5:41 pm - 9:24 pm

DEN

ORD

2h 43mnonstop

$102Frontier

Sun, Jan 11 - Thu, Jan 15

7:51 pm - 9:50 pm

ORD

DEN

2h 59mnonstop

3:03 pm - 6:46 pm

DEN

ORD

2h 43mnonstop

$103Frontier

Sun, Feb 22 - Thu, Mar 5

4:30 pm - 6:31 pm

ORD

DEN

3h 01mnonstop

9:50 am - 6:58 pm

DEN

ORD

8h 08m1 stop

$104Frontier

Fri, Jan 9 - Mon, Jan 12

2:02 pm - 3:57 pm

ORD

DEN

2h 55mnonstop

7:24 pm - 10:53 pm

DEN

ORD

2h 29mnonstop

$105United Airlines

Sat, Feb 28 - Wed, Mar 4

4:30 pm - 6:31 pm

ORD

DEN

3h 01mnonstop

10:53 am - 6:54 pm

DEN

ORD

7h 01m1 stop

$106Frontier

Fri, Jan 9 - Mon, Jan 12

10:07 pm - 11:58 pm

ORD

DEN

2h 51mnonstop

9:41 am - 8:47 pm

DEN

ORD

10h 06m1 stop

$107Frontier

Sun, Jan 11 - Fri, Jan 16

2:30 pm - 4:41 pm

ORD

DEN

3h 11mnonstop

7:30 am - 6:27 pm

DEN

ORD

9h 57m1 stop

$108Frontier

Sun, Jan 18 - Wed, Jan 21

Frontier flights from Chicago O'Hare Intl Airport to Denver

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

Frontier

Jan 11

ORD10:07 pmChicago O'Hare Intl

2h 51m

DEN11:58 pmDenver Intl

Jan 16

DEN5:41 pmDenver Intl

2h 43m

ORD9:24 pmChicago O'Hare Intl

$99

Find similar

Frontier

Jan 30

ORD4:34 pmChicago O'Hare Intl

7h 55m

1 stop

DEN11:29 pmDenver Intl

Feb 12

DEN3:03 pmDenver Intl

2h 43m

ORD6:46 pmChicago O'Hare Intl

$100

Find similar

Frontier

Jan 25

ORD12:07 pmChicago O'Hare Intl

2h 58m

DEN2:05 pmDenver Intl

Jan 30

DEN7:10 amDenver Intl

2h 47m

ORD10:57 amChicago O'Hare Intl

$101

Find similar

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

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

United Airlines

Feb 28

ORD5:50 pmChicago O'Hare Intl

2h 58m

DEN7:48 pmDenver Intl

Mar 3

DEN8:30 pmDenver Intl

2h 29m

ORD11:59 pmChicago O'Hare Intl

$105

Find similar

United Airlines

Jan 9

ORD3:59 pmChicago O'Hare Intl

2h 58m

DEN5:57 pmDenver Intl

Jan 13

DEN5:42 pmDenver Intl

2h 33m

ORD9:15 pmChicago O'Hare Intl

$117

Find similar

United Airlines

Jan 18

ORD6:15 pmChicago O'Hare Intl

2h 58m

DEN8:13 pmDenver Intl

Jan 21

DEN7:50 amDenver Intl

2h 44m

ORD11:34 amChicago O'Hare Intl

$124

Find similar

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

ChicagoDenver

ORD - DEN

ORDDEN

Chicago O'Hare Intl

Sun 1/11

10:07 pm-11:58 pm

Nonstop2h 51m

Denver Intl

Fri 1/16

5:41 pm-9:24 pm

Nonstop2h 43m

$99

ChicagoDenver

ORD - DEN

ORDDEN

Chicago O'Hare Intl

Fri 1/30

4:34 pm-11:29 pm

1 stop7h 55m

Denver Intl

Thu 2/12

3:03 pm-6:46 pm

Nonstop2h 43m

$100

ChicagoDenver

ORD - DEN

ORDDEN

Chicago O'Hare Intl

Sun 1/25

12:07 pm-2:05 pm

Nonstop2h 58m

Denver Intl

Fri 1/30

7:10 am-10:57 am

Nonstop2h 47m

$101

ChicagoDenver

ORD - DEN

ORDDEN

Chicago O'Hare Intl

Sun 1/11

10:07 pm-11:58 pm

Nonstop2h 51m

Denver Intl

Thu 1/15

5:41 pm-9:24 pm

Nonstop2h 43m

$102

ChicagoDenver

ORD - DEN

ORDDEN

Chicago O'Hare Intl

Sun 2/22

7:51 pm-9:50 pm

Nonstop2h 59m

Denver Intl

Thu 3/5

3:03 pm-6:46 pm

Nonstop2h 43m

$103

ChicagoDenver

ORD - DEN

ORDDEN

Chicago O'Hare Intl

Fri 1/9

4:30 pm-6:31 pm

Nonstop3h 01m

Denver Intl

Mon 1/12

9:50 am-6:58 pm

1 stop8h 08m

$104

ChicagoDenver

ORD - DEN

ORDDEN

Chicago O'Hare Intl

Sat 2/28

2:02 pm-3:57 pm

Nonstop2h 55m

Denver Intl

Wed 3/4

7:24 pm-10:53 pm

Nonstop2h 29m

$105

ChicagoDenver

ORD - DEN

ORDDEN

Chicago O'Hare Intl

Fri 1/9

4:30 pm-6:31 pm

Nonstop3h 01m

Denver Intl

Mon 1/12

10:53 am-6:54 pm

1 stop7h 01m

$106

ChicagoDenver

ORD - DEN

ORDDEN

Chicago O'Hare Intl

Sun 1/11

10:07 pm-11:58 pm

Nonstop2h 51m

Denver Intl

Fri 1/16

9:41 am-8:47 pm

1 stop10h 06m

$107

ChicagoDenver

ORD - DEN

ORDDEN

Chicago O'Hare Intl

Sun 1/18

2:30 pm-4:41 pm

Nonstop3h 11m

Denver Intl

Wed 1/21

7:30 am-6:27 pm

1 stop9h 57m

$108

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Showing 1-10 of 20 resultsSorted by cheapest first

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

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

Delays

Other information

What is the cheapest month to fly to Denver?

The cheapest month to fly to Denver from Chicago O'Hare Intl Airport is in September. Flight prices, which tend to average around $190, are often lower during this time because this is during the off-season. If you don’t want to visit Denver in September, then you should wait until January to fly from Chicago O'Hare Intl Airport, when ticket prices are also cheap, with an average price of $196.

What is the cheapest day to depart on your flight to Denver?

The cheapest day to depart on your flight to Denver is on a Wednesday when prices can be found for as low as $229. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Denver is Sunday, with ticket prices averaging around $287.

What is the cheapest time of day to depart on your flight to Denver?

The cheapest time of day to fly to Denver is in the morning when flights can be purchased for as low as $236. Flights at noon are often more expensive with an average ticket price of $276.

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

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

How far in advance should I book a flight to Denver?

You are more likely to see cheaper flights to Denver from Chicago O'Hare Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Denver for around $218 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Denver from Chicago O'Hare Intl Airport for as low as $187 on momondo.

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

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

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

As of December 2025, prices for Chicago O'Hare Intl Airport to Denver flights are approximately 4% cheaper when compared to flights at the same time last year.

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

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

Estimated round-trip price

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

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

Best Price Found	$116
Fastest flight time	2h 33m
Direct flights	Every day
Airports in Denver	1 airport

The best one-way flight to Denver from Chicago O'Hare Intl Airport in the past 72 hours is $116. The best round-trip flight deal from Chicago O'Hare Intl Airport to Denver found on momondo in the last 72 hours is $164.

The fastest flight from Chicago O'Hare Intl Airport to Denver takes 2h 33m

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

There is 1 airport near Denver: Denver Intl (DEN)

Search flight deals

How far is Chicago O'Hare Intl to Denver Intl by plane?
The distance between Chicago O'Hare Intl and Denver Intl is about 903.7 mi. In terms of flight time, this usually takes a little over 2h 49m.
When did momondo last update prices for flights from Chicago O'Hare Intl Airport to Denver Intl Airport?
Prices for flights from Chicago O'Hare Intl Airport to Denver Intl Airport were last updated today.
How many operators does momondo search for flights from Chicago O'Hare Intl Airport to Denver Intl Airport?
There are 4 operators available for flights from Chicago O'Hare Intl Airport to Denver Intl Airport as of December 2025.
How old do you have to be to fly from Chicago O'Hare Intl Airport to Denver Intl Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Chicago O'Hare Intl Airport to Denver Intl Airport.
What documentation or ID do you need to fly to Denver Intl Airport?
The travel and health documents you'll need for your trip to Denver 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 Denver 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 Chicago O'Hare Intl Airport to Denver?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Chicago O'Hare Intl Airport to Denver is Airbus A321neo (16.57% of total bookings). The next most popular plane models are Boeing 737-800 (12.65%), Boeing 737-900 (9.63%), and Boeing 757-300 (8.83%).
What is the most popular airline from Chicago O'Hare Intl Airport to Denver?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Chicago O'Hare Intl Airport to Denver is Frontier (35% of total bookings). The next most popular airlines are United Airlines (28%), American Airlines (24%), and Southwest (13%).

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

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

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $58	Free Cancellation	Rating 5.8 3,092 reviews	Search Frontier flights
American Airlines	PriceFrom $153	Free Cancellation	Rating 7.2 11,045 reviews	Search American Airlines flights
United Airlines	PriceFrom $157	Free Cancellation	Rating 7.4 9,063 reviews	Search United Airlines flights
Southwest	PriceFrom $157	Free Cancellation	Rating 8.0 4,253 reviews	Search Southwest flights

United Airlines Flights From Chicago O'Hare Intl Airport to Denver
The lowest priced United Airlines flight from Chicago O'Hare Intl Airport to Denver from the last 72 hours was $157. Generally, United Airlines has 73 flights on this route every week with an average price of $283. United Airlines is rated 7.4/10 by our users.
American Airlines Flights From Chicago O'Hare Intl Airport to Denver
American Airlines (7.2/10 from 11,045 reviews) operates around 16 flights from Chicago O'Hare Intl Airport to Denver in any given week. The average American Airlines airfare for this route is around $234, with deals from around $153 rare but found on momondo. Referenced prices are for round-trip Chicago O'Hare Intl Airport to Denver flight searches in the last 72 hours.

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Copper Mountain

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Grand Lake

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Chicago to Denver. Millions of users trust and use momondo every year so you are in good hands.

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

momondo does allow users to show only those flights to Denver from Chicago which offer a flexible booking policy as well as other useful filters and features.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Chicago to Denver.

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

If you are not ready to book a flight from Chicago to Denver now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Denver and let you know when they change.

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Cheap flights from Chicago O'Hare Intl Airport to Denver from $62

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Frontier flights from Chicago O'Hare Intl Airport to Denver

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

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 Denver?

What is the cheapest day to depart on your flight to Denver?

The cheapest day to depart on your flight to Denver is on a Wednesday when prices can be found for as low as $229. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Denver is Sunday, with ticket prices averaging around $287.

What is the cheapest time of day to depart on your flight to Denver?

The cheapest time of day to fly to Denver is in the morning when flights can be purchased for as low as $236. Flights at noon are often more expensive with an average ticket price of $276.

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

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

How far in advance should I book a flight to Denver?

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

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

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

As of December 2025, prices for Chicago O'Hare Intl Airport to Denver flights are approximately 4% cheaper when compared to flights at the same time last year.

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

Southwest is the most popular carrier operating from Chicago O'Hare Intl to Denver Intl

What airlines fly to Denver?

How often are flights from Chicago to Denver delayed?

Historically, on average around 16% of flights between Chicago and Denver have experienced a delay on any given week. The average delay length over the past 12 months has been 149 minutes.

What is the most punctual flight time for Chicago to Denver flights?

Generally, flights departing in the morning tend to experience fewer delays. Flights in the evening have, in the past, seen delays more frequently in comparison.

What day of the week experiences the fewest flight delays on this route?

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

Which airline has the best punctuality record on Chicago to Denver flights?

According to our data, Frontier have had the least number of delays on this route over the last 12 months; with about 12% of their flights experiencing any sort of delay.

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

The number of flights available between Chicago O'Hare Intl Airport and Denver is 37 per day as of December 2025. The most frequent departure time is 8:00PM, with 42% of daily flights leaving in the evening.

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

As of December 2025, 261 flights take off from Chicago O'Hare Intl Airport and land in Denver each week. The most common flight departure day for this route is Thu, with 18% of weekly flights taking off on this day.

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

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

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

Best Price Found

Fastest flight time

Direct flights

Airports in Denver

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

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

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

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

What documentation or ID do you need to fly to Denver Intl Airport?

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

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

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

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

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

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

Traveling to a place near Denver?

Why use momondo?

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

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

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

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

An easier way to manage your Denver 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 the United States

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