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O'Hare Intl

$64+ Cheap flights from Denver (DEN) to O'Hare Intl (ORD)

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 10/14. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — ORD
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from Denver Intl to Chicago O'Hare Intl are usually found in September or October, booked 79 days in advance, depart on a Friday or Thursday and return on a Saturday

Cheap flight deals from Denver to O'Hare Intl

Discover tips and strategies to find the most affordable flight options for your journey from Denver (DEN) to O'Hare Intl (ORD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 11, 2025.

Round-trip from

$116
(Priceline)

One-way from

$64
(Southwest)

Popular in

May

Cheapest in

September

Average price

$181

Good round-trip deal

$207 or less

Good one-way deal

$119 or less
From Denver Intl to Chicago O'Hare Intl
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One-way flight from Denver Intl to Chicago O'Hare Intl
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Highest demand for flights based on searches. 8% potential increase in price ($19 potential increase over avg. RT price).
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Cheapest flight prices on average. 0% potential price decrease ($3 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Denver Intl to Chicago O'Hare Intl.
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Price to beat on a one-way flight from Denver Intl to Chicago O'Hare Intl.
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Find flight deals from Denver to O'Hare Intl

Cheapest flights from Denver to O'Hare Intl
Explore the most affordable flight options available from Denver to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This CheapOair deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/58:41 pmDEN - ORD
Nonstop2h 31mFrontier
Fri 11/711:53 amORD - DEN
1 stop9h 08mFrontier
Deal found 9/11$116
This Frontier deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/38:30 pmDEN - ORD
Nonstop2h 29mFrontier
Mon 10/610:42 amORD - DEN
1 stop11h 05mFrontier
Deal found 9/9$117
This Frontier deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/38:30 pmDEN - ORD
Nonstop2h 29mFrontier
Wed 10/87:15 amORD - DEN
Nonstop2h 49mFrontier
Deal found 9/9$118
This Cheapflightsfares deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/179:19 pmDEN - ORD
Nonstop2h 40mFrontier
Sun 10/199:54 pmORD - DEN
1 stop13h 24mFrontier
Deal found 9/10$119
This CheapOair deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/258:30 pmDEN - ORD
Nonstop2h 29mFrontier
Thu 10/25:35 amORD - DEN
Nonstop2h 45mFrontier
Deal found 9/10$120
This Cheapflightsfares deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/68:44 pmDEN - ORD
Nonstop2h 31mFrontier
Sun 11/96:00 amORD - DEN
Nonstop2h 41mFrontier
Deal found 9/9$121
This Cheapflightsfares deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/275:50 pmDEN - ORD
Nonstop2h 38mFrontier
Tue 9/307:20 amORD - DEN
Nonstop2h 53mFrontier
Deal found 9/8$122
This Cheapflightsfares deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/266:00 amDEN - ORD
Nonstop2h 37mFrontier
Fri 10/310:42 amORD - DEN
Nonstop2h 51mFrontier
Deal found 9/10$123
This Frontier deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/286:00 amDEN - ORD
Nonstop2h 37mFrontier
Mon 10/66:10 amORD - DEN
Nonstop2h 45mFrontier
Deal found 9/10$125
This American Airlines deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/77:21 amDEN - ORD
Nonstop2h 33mAmerican Airlines
Tue 10/76:30 pmORD - DEN
Nonstop2h 57mAmerican Airlines
Deal found 9/11$127

Cheapflights Fare Finder

 
Customize your flight search to find flights from Denver to O'Hare Intl 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, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
Use the filters below to find and compare flights from Denver to Chicago O'Hare Intl Airport that are best for you.

Fly from

Denver

Fly to

O'Hare Intl

Route

Depart

Return

Price

DenverChicago

DEN - ORD

DENORD

Denver Intl

Tue 10/7

8:28 pm-11:59 pm

Nonstop2h 31m

Chicago O'Hare Intl

Fri 10/10

5:01 am-6:41 am

Nonstop2h 40m

$146

DenverChicago

DEN - ORD

DENORD

Denver Intl

Wed 10/22

8:00 am-4:25 pm

1 stop7h 25m

Chicago O'Hare Intl

Sat 10/25

7:30 am-6:50 pm

2 stops12h 20m

$192

DenverChicago

DEN - ORD

DENORD

Denver Intl

Thu 2/12

8:17 am-11:42 am

Nonstop2h 25m

Chicago O'Hare Intl

Mon 2/16

9:45 pm-11:18 pm

Nonstop2h 33m

$195

DenverChicago

DEN - ORD

DENORD

Denver Intl

Thu 11/6

6:50 am-1:00 pm

1 stop5h 10m

Chicago O'Hare Intl

Sat 11/8

2:15 pm-9:40 pm

2 stops8h 25m

$211

DenverChicago

DEN - ORD

DENORD

Denver Intl

Sat 9/27

9:35 am-1:05 pm

Nonstop2h 30m

Chicago O'Hare Intl

Wed 10/1

3:10 pm-10:05 pm

2 stops7h 55m

$214

DenverChicago

DEN - ORD

DENORD

Denver Intl

Fri 10/31

5:45 am-12:40 pm

1 stop5h 55m

Chicago O'Hare Intl

Sat 11/1

4:09 pm-9:41 pm

1 stop6h 32m

$217

DenverChicago

DEN - ORD

DENORD

Denver Intl

Sat 10/4

1:40 pm-10:00 pm

2 stops7h 20m

Chicago O'Hare Intl

Wed 10/8

6:15 am-12:15 pm

1 stop7h 00m

$219

DenverChicago

DEN - ORD

DENORD

Denver Intl

Fri 11/14

5:25 am-1:30 pm

1 stop7h 05m

Chicago O'Hare Intl

Mon 11/17

2:15 pm-10:15 pm

2 stops9h 00m

$221

DenverChicago

DEN - ORD

DENORD

Denver Intl

Thu 11/27

6:15 am-1:00 pm

1 stop5h 45m

Chicago O'Hare Intl

Mon 12/1

5:15 pm-12:45 am

1 stop8h 30m

$222

DenverChicago

DEN - ORD

DENORD

Denver Intl

Fri 10/3

5:35 am-1:05 pm

1 stop6h 30m

Chicago O'Hare Intl

Tue 10/7

1:30 pm-10:35 pm

2 stops10h 05m

$226

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 22 results
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The best insider tips for Denver to Chicago O'Hare Intl Airport flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Denver to Chicago O'Hare Intl Airport trip
Airlines
Frontier

Frontier offers extra comfort seats for a fee, with 32” or 35” seat separation.


Early morning flights have a better chance of being on time, reducing delays.

Read more about Frontierby Marisa Garcia
United Airlines

United's Economy Plus offers extra legroom seats towards the front of the economy cabin.


United's Polaris Lounges offer showers, napping areas, and dining for premium passengers.

Read more about United Airlinesby Harriet Baskas
Southwest

Southwest offers free snacks and non-alcoholic drinks, enhancing the short flight experience.


Enjoy free messaging and in-flight entertainment streamed to your device on Southwest flights.

Read more about Southwestby Marisa Garcia
Airports
DEN

For a quick departure, use the A Line train to reach DEN from Union Station in 37 minutes, avoiding traffic hassles.

Read more about DENby Emily Zemler
ORD

To reach downtown Chicago quickly, take the 'L' train from ORD, avoiding potential traffic delays with taxis or rideshares.

Read more about ORDby Ramsey Qubein
Our travel experts
Marisa Garcia

Marisa Garcia

Expert on Frontier and Southwest

Marisa Garcia

Marisa Garcia

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialized in airline interiors and regulations. Ten years ago, she pivoted to journalism. She shares her insights in leading aviation, travel, and business publications and on her site FlightChic.

Read more
Harriet Baskas

Harriet Baskas

Expert on United Airlines

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on ORD

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more
Emily Zemler

Emily Zemler

Expert on DEN

Emily Zemler

Emily Zemler

Emily is a freelance writer and book author based in London covering entertainment and travel. Her work has appeared in Los Angeles Times, Observer, and Conde Nast Traveler She has ventured to more than 40 countries and all seven continents, always in search of a great art museum. She has written extensively about hotels, luxury travel, and aviation.

Read more

Best time to book a flight from Denver to O'Hare Intl

Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl from Denver 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 Denver to Chicago O'Hare Intl Airport

How far ahead should I book a flight from Denver to Chicago O'Hare Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Denver to O'Hare Intl. Price data was last updated on August 29, 2025.

To ensure you get the cheapest price possible for a flight from Denver to Chicago O'Hare Intl Airport, you should look to book at least 79 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Denver to Chicago O'Hare Intl Airport?

Currently, August is the cheapest month in which you can book a flight from Denver to Chicago O'Hare Intl Airport (average of $245). Flying from Denver to Chicago O'Hare Intl Airport in March is currently the most expensive (average of $321). 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 DEN to ORD?

Find hourly flight availability from Denver to O'Hare Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

A simple way to save on the total cost of your ticket is to fly from Denver to Chicago O'Hare Intl Airport in the evening. If you’re flexible enough to do this you can expect to save up to 71% on your trip compared to booking a flight at noon.

What is the cheapest day to fly from Denver to Chicago O'Hare Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from Denver to O'Hare Intl. Price data was last updated on September 7, 2025.

Travelers seeking maximum savings on their Denver to Chicago O'Hare Intl Airport flight should consider departing on Wednesday evenings when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing O'Hare Intl

Get insights into the airlines that provide service to O'Hare Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to O'Hare Intl. Reviews last updated September 11, 2025.
Peruse reviews from past customers who have flown with Southwest, United Airlines, and American Airlines from Denver to Chicago O'Hare Intl Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,248 reviews

Crew

8.6

Overall

8.0

Entertainment

7.5

Comfort

8.0

Food

7.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,248 reviews
Southwest
8.0
Very good
4,248 reviews

Crew

8.6

Overall

8.0

Entertainment

7.5

Comfort

8.0

Food

7.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,937 reviews
Southwest
8.0
Very good
4,248 reviews

Crew

8.6

Overall

8.0

Entertainment

7.5

Comfort

8.0

Food

7.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,248 reviews

Crew

8.6

Overall

8.0

Entertainment

7.5

Comfort

8.0

Food

7.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Frontier
5.8
Fair
3,177 reviews
Southwest
8.0
Very good
4,248 reviews

Crew

8.6

Overall

8.0

Entertainment

7.5

Comfort

8.0

Food

7.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

Find useful and relevant information for your journey from Denver to O'Hare Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Denver to Chicago O'Hare Intl?

    Most people fly from Denver Intl (DEN) if they book a flight from Denver to Chicago O'Hare Intl. On average, Denver Intl has 55 outbound flights to Chicago O'Hare Intl per day from 4 airlines. Denver Intl is conveniently located just 18.5 mi from Denver’s city center.

  • How long is the flight from Denver to Chicago O'Hare Intl Airport?

    A quick flight from Denver to Chicago O'Hare Intl Airport can take about 2h 31m. United Airlines provides one of the quickest options available for as low as $146. Denver and Chicago O'Hare Intl Airport are separated by a distance of 886 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Denver to Chicago O'Hare Intl Airport round-trip?

    Frontier, at $62, was found to be the cheapest airline from Denver to Chicago O'Hare Intl Airport.Alternate airlines to your destination round-trip include Southwest and American Airlines. Frontier is 72% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the most reliable airlines from Denver to Chicago O'Hare Intl Airport?

    Consider Cathay Pacific (85%), Japan Airlines (84%) or Turkish Airlines (77%) when booking your flight. These represent the most reliable airlines when flying from Denver to Chicago O'Hare Intl Airport.

  • What are the cheapest flights from Denver to Chicago O'Hare Intl Airport?

    Looking for the cheapest flight from Denver to Chicago O'Hare Intl Airport? While on average our users pay $1,041, our data indicates the cheapest price to be $61. The most popular route (Denver Intl - Chicago O'Hare Intl), is priced around $61.

  • Can I find deals for flights from Denver to O'Hare Intl that include hotel bookings?

    Yes. In addition to deals on Denver to O'Hare Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Denver to O'Hare Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Denver to O'Hare Intl.

  • Can I find deals for business class flights from Denver to O'Hare Intl?

    Yes. Cheapflights offers flight deals from Denver to O'Hare Intl 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 Denver to Chicago O'Hare Intl Airport?

    Currently, August is the cheapest month in which you can book a flight from Denver to Chicago O'Hare Intl Airport (average of $245). Flying from Denver to Chicago O'Hare Intl Airport in March is currently the most expensive (average of $321). 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

Traveling to a place near Chicago O'Hare Intl Airport?

Book flights to Chicago O'Hare Intl Airport if you plan to visit one of these locations
Schaumburg
Rosemont
Skokie
Gurnee
Hoffman Estates
Des Plaines
Elgin
Arlington Heights
Beloit
Racine
Rockford
Orland Park
Oak Brook
Downers Grove
Naperville
Elk Grove Village
Evanston
Merrillville
Bridgeview
Warrenville

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Top 4 airlines flying from Denver to O'Hare Intl

Discover the top 4 airlines that operate flights from Denver to O'Hare Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$62Average$160FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$152Average$251FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$156Average$240FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$165Average$304FlexibilityNo cancel feeOn-time69%

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