Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Chicago O'Hare Intl Airport to Denver from $66

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago O'Hare Intl Airport to Denver departing on 10/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Chicago O'Hare Intl Airport to Denver

Cheap round-trip flights

Frontier Logo
7:20 am - 9:13 amORD-DEN
2h 53mnonstop
Frontier Logo
5:50 pm - 9:28 pmDEN-ORD
2h 38mnonstop
$98Frontier
Find Deal
mar., sep. 23 - mar., sep. 23
Frontier Logo
7:15 am - 9:04 amORD-DEN
2h 49mnonstop
Frontier Logo
6:00 am - 9:36 amDEN-ORD
2h 36mnonstop
$99Frontier
Find Deal
mié., oct. 22 - lun., oct. 27
Frontier Logo
6:00 am - 7:45 amORD-DEN
2h 45mnonstop
Frontier Logo
6:00 am - 9:37 amDEN-ORD
2h 37mnonstop
$100Frontier
Find Deal
dom., sep. 7 - vie., sep. 12
Frontier Logo
6:00 am - 7:45 amORD-DEN
2h 45mnonstop
Frontier Logo
6:00 am - 9:37 amDEN-ORD
2h 37mnonstop
$101Frontier
Find Deal
jue., sep. 18 - lun., sep. 22
Frontier Logo
6:00 am - 7:45 amORD-DEN
2h 45mnonstop
Frontier Logo
8:30 pm - 11:59 pmDEN-ORD
2h 29mnonstop
$102Frontier
Find Deal
jue., sep. 11 - jue., sep. 18
Frontier Logo
7:20 am - 9:13 amORD-DEN
2h 53mnonstop
Frontier Logo
6:00 am - 9:37 amDEN-ORD
2h 37mnonstop
$103Frontier
Find Deal
mar., sep. 30 - vie., oct. 3
Frontier Logo
6:00 am - 7:45 amORD-DEN
2h 45mnonstop
Frontier Logo
6:00 am - 9:37 amDEN-ORD
2h 37mnonstop
$104Frontier
Find Deal
dom., sep. 7 - dom., sep. 14
Frontier Logo
7:15 am - 9:04 amORD-DEN
2h 49mnonstop
Frontier Logo
6:00 am - 9:36 amDEN-ORD
2h 36mnonstop
$105Frontier
Find Deal
mar., oct. 21 - vie., oct. 24
Frontier Logo
6:00 am - 7:45 amORD-DEN
2h 45mnonstop
Frontier Logo
5:50 pm - 9:28 pmDEN-ORD
2h 38mnonstop
$106Frontier
Find Deal
dom., sep. 21 - mié., sep. 24
Frontier Logo
7:05 am - 8:54 amORD-DEN
2h 49mnonstop
Frontier Logo
8:22 pm - 11:53 pmDEN-ORD
2h 31mnonstop
$107Frontier
Find Deal
sáb., oct. 18 - mié., oct. 22

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
Sep 23
ORD7:20 amChicago O'Hare Intl
2h 53m
DEN9:13 amDenver Intl
Sep 23
DEN5:50 pmDenver Intl
2h 38m
ORD9:28 pmChicago O'Hare Intl
$98
Find similar
Frontier
Oct 22
ORD7:15 amChicago O'Hare Intl
2h 49m
DEN9:04 amDenver Intl
Oct 27
DEN6:00 amDenver Intl
2h 36m
ORD9:36 amChicago O'Hare Intl
$99
Find similar
Frontier
Sep 7
ORD6:00 amChicago O'Hare Intl
2h 45m
DEN7:45 amDenver Intl
Sep 12
DEN6:00 amDenver Intl
2h 37m
ORD9:37 amChicago O'Hare Intl
$100
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Chicago O'Hare Intl Airport to Denver 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, momondo users made 832,500 searches. Data last updated agosto 28, 2025.
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

mar. 9/23

7:20 am-9:13 am

Nonstop2h 53m

Denver Intl

mar. 9/23

5:50 pm-9:28 pm

Nonstop2h 38m

$98

ChicagoDenver

ORD - DEN

ORDDEN

Chicago O'Hare Intl

mié. 10/22

7:15 am-9:04 am

Nonstop2h 49m

Denver Intl

lun. 10/27

6:00 am-9:36 am

Nonstop2h 36m

$99

ChicagoDenver

ORD - DEN

ORDDEN

Chicago O'Hare Intl

dom. 9/7

6:00 am-7:45 am

Nonstop2h 45m

Denver Intl

vie. 9/12

6:00 am-9:37 am

Nonstop2h 37m

$100

ChicagoDenver

ORD - DEN

ORDDEN

Chicago O'Hare Intl

jue. 9/18

6:00 am-7:45 am

Nonstop2h 45m

Denver Intl

lun. 9/22

6:00 am-9:37 am

Nonstop2h 37m

$101

ChicagoDenver

ORD - DEN

ORDDEN

Chicago O'Hare Intl

jue. 9/11

6:00 am-7:45 am

Nonstop2h 45m

Denver Intl

jue. 9/18

8:30 pm-11:59 pm

Nonstop2h 29m

$102

ChicagoDenver

ORD - DEN

ORDDEN

Chicago O'Hare Intl

mar. 9/30

7:20 am-9:13 am

Nonstop2h 53m

Denver Intl

vie. 10/3

6:00 am-9:37 am

Nonstop2h 37m

$103

ChicagoDenver

ORD - DEN

ORDDEN

Chicago O'Hare Intl

dom. 9/7

6:00 am-7:45 am

Nonstop2h 45m

Denver Intl

dom. 9/14

6:00 am-9:37 am

Nonstop2h 37m

$104

ChicagoDenver

ORD - DEN

ORDDEN

Chicago O'Hare Intl

mar. 10/21

7:15 am-9:04 am

Nonstop2h 49m

Denver Intl

vie. 10/24

6:00 am-9:36 am

Nonstop2h 36m

$105

ChicagoDenver

ORD - DEN

ORDDEN

Chicago O'Hare Intl

dom. 9/21

6:00 am-7:45 am

Nonstop2h 45m

Denver Intl

mié. 9/24

5:50 pm-9:28 pm

Nonstop2h 38m

$106

ChicagoDenver

ORD - DEN

ORDDEN

Chicago O'Hare Intl

sáb. 10/18

7:05 am-8:54 am

Nonstop2h 49m

Denver Intl

mié. 10/22

8:22 pm-11:53 pm

Nonstop2h 31m

$107

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Denver from

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?

The cheapest month to fly to Denver from Chicago O'Hare Intl Airport is in September. Flight prices, which tend to average around $169, 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 November to fly from Chicago O'Hare Intl Airport, when ticket prices are also cheap, with an average price of $169.

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 $231. 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 $297.

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 afternoon when flights can be purchased for as low as $232. Flights at noon are often more expensive with an average ticket price of $280.

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 $211 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 $177 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 August 2025, prices for Chicago O'Hare Intl Airport to Denver flights are approximately 30% 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

$127

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 $127. The best round-trip flight deal from Chicago O'Hare Intl Airport to Denver found on momondo in the last 72 hours is $158.
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 41m.

  • 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?

  • 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?

  • 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
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $57Free CancellationRating
5.8
3,204 reviews
Search Frontier flights
American AirlinesPriceFrom $152Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $158Free CancellationRating
8.0
4,242 reviews
Search Southwest flights
United AirlinesPriceFrom $160Free CancellationRating
7.4
8,944 reviews
Search United Airlines flights

  • Southwest Flights From Chicago O'Hare Intl Airport to Denver

    The lowest priced Southwest flight from Chicago O'Hare Intl Airport to Denver from the last 72 hours was $158. Generally, Southwest has 19 flights on this route every week with an average price of $249. Southwest is rated 8.0/10 by our users.

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

    United Airlines (7.4/10 from 8,944 reviews) operates around 57 flights from Chicago O'Hare Intl Airport to Denver in any given week. The average United Airlines airfare for this route is around $292, with deals from around $160 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.

Traveling to a place near Denver?

Book flights to Denver if you plan to visit one of these locations
Estes Park
Breckenridge
Black Hawk
Aurora
Fort Collins
Keystone
Cripple Creek
Longmont
Boulder
Manitou Springs
Lakewood
Greeley
Westminster
Thornton
Winter Park
Grand Lake
Copper Mountain
Frisco
Silverthorne
Centennial

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.

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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
mar. 9/2
mar. 9/9
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States