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O'Hare Intl

$484+ Cheap flights from Dublin (DUB) to O'Hare Intl (ORD)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/19. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — ORD
août 2 — août 91
sam. 8/2
sam. 8/9
1 adult, Economy
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Cheapflights Tip: The best prices from Dublin to Chicago O'Hare Intl are usually found in February or November, booked 72 days in advance, depart on a Wednesday or Sunday and return on a Tuesday

Cheap flight deals from Dublin to O'Hare Intl

Discover tips and strategies to find the most affordable flight options for your journey from Dublin (DUB) 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 juillet 28, 2025.

Round-trip from

$484
(United Airlines)

Popular in

July

Cheapest in

February

Average price

$761

Good round-trip deal

$741 or less

Good one-way deal

$641 or less
From Dublin to Chicago O'Hare Intl
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Highest demand for flights based on searches. 14% potential increase in price ($99 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Price to beat on a round-trip flight from Dublin to Chicago O'Hare Intl.
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Price to beat on a one-way flight from Dublin to Chicago O'Hare Intl.
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Find flight deals from Dublin to O'Hare Intl

Cheapest flights from Dublin to O'Hare Intl
Explore the most affordable flight options available from Dublin to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on juillet 28, 2025.

This United Airlines deal was found by Cheapflights users on 7/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 9/199:50 amDUB - ORD
1 stop15h 39mUnited Airlines
mer. 10/18:20 pmORD - DUB
Nonstop7h 25mUnited Airlines
Deal found 7/28$484
This Air Canada deal was found by Cheapflights users on 7/28. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 9/149:20 amDUB - ORD
1 stop35h 40mAir Canada
sam. 9/278:25 pmORD - DUB
2 stops29h 20mAir Canada
Deal found 7/28$485
This Booking.com deal was found by Cheapflights users on 7/28. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 8/2812:20 pmDUB - ORD
2 stops33h 50mScandinavian Airlines
mar. 9/167:15 pmORD - DUB
1 stop17h 00mScandinavian Airlines
Deal found 7/28$486
This Finnair deal was found by Cheapflights users on 7/28. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/161:45 pmDUB - ORD
Nonstop8h 00mFinnair
lun. 9/2910:15 pmORD - DUB
Nonstop7h 25mFinnair
Deal found 7/28$487
This American Airlines deal was found by Cheapflights users on 7/28. 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.
lun. 9/112:45 pmDUB - ORD
1 stop11h 30mAmerican Airlines
lun. 9/88:35 amORD - DUB
1 stop15h 55mAmerican Airlines
Deal found 7/28$488
This Lufthansa deal was found by Cheapflights users on 7/28. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/1611:35 amDUB - ORD
Nonstop8h 00mLufthansa
jeu. 10/24:00 pmORD - DUB
1 stop18h 55mLufthansa
Deal found 7/28$497
This Booking.com deal was found by Cheapflights users on 7/28. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 10/89:00 amDUB - ORD
2 stops17h 22mMultiple Airlines
lun. 10/133:45 pmORD - DUB
1 stop14h 25mMultiple Airlines
Deal found 7/28$498
This KAYAK deal was found by Cheapflights users on 7/28. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/151:45 pmDUB - ORD
Nonstop8h 00mIberia
mar. 9/3010:15 pmORD - DUB
Nonstop7h 25mIberia
Deal found 7/28$513
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/1611:35 amDUB - ORD
Nonstop8h 00mBrussels Airlines
sam. 9/278:20 pmORD - DUB
Nonstop7h 25mBrussels Airlines
Deal found 7/27$533
This Delta deal was found by Cheapflights users on 7/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 10/318:50 amDUB - ORD
2 stops17h 41mDelta
mar. 11/41:25 pmORD - DUB
2 stops17h 15mDelta
Deal found 7/26$538
This Booking.com deal was found by Cheapflights users on 7/28. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 8/284:40 pmDUB - ORD
Nonstop8h 20mAer Lingus
mar. 9/163:45 pmORD - DUB
Nonstop7h 25mAer Lingus
Deal found 7/28$551
This SWISS deal was found by Cheapflights users on 7/28. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 10/16:40 pmDUB - ORD
2 stops23h 25mSWISS
sam. 10/119:35 pmORD - DUB
2 stops14h 15mSWISS
Deal found 7/28$561

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dublin 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 juillet 28, 2025.
Use the filters below to find and compare flights from Dublin to Chicago O'Hare Intl Airport that are best for you.

Fly from

Dublin

Fly to

O'Hare Intl

Route

Depart

Return

Price

DublinChicago

DUB - ORD

DUBORD

Dublin

ven. 9/19

9:50 am-7:29 pm

1 stop15h 39m

Chicago O'Hare Intl

sam. 9/27

8:20 pm-9:45 am

Nonstop7h 25m

$484

DublinChicago

DUB - ORD

DUBORD

Dublin

dim. 9/14

9:20 am-3:00 pm

1 stop35h 40m

Chicago O'Hare Intl

sam. 9/27

6:20 pm-8:15 am

1 stop31h 55m

$485

DublinChicago

DUB - ORD

DUBORD

Dublin

jeu. 8/28

12:20 pm-4:10 pm

2 stops33h 50m

Chicago O'Hare Intl

mar. 9/16

7:15 pm-6:15 pm

1 stop17h 00m

$486

DublinChicago

DUB - ORD

DUBORD

Dublin

mar. 9/16

1:45 pm-3:45 pm

Nonstop8h 00m

Chicago O'Hare Intl

lun. 9/29

10:15 pm-11:40 am

Nonstop7h 25m

$487

DublinChicago

DUB - ORD

DUBORD

Dublin

lun. 9/1

12:45 pm-1:50 pm

1 stop31h 05m

Chicago O'Hare Intl

lun. 9/8

10:15 pm-11:40 am

Nonstop7h 25m

$488

DublinChicago

DUB - ORD

DUBORD

Dublin

mar. 9/16

11:35 am-1:35 pm

Nonstop8h 00m

Chicago O'Hare Intl

mar. 9/30

6:35 pm-4:55 pm

1 stop16h 20m

$497

DublinChicago

DUB - ORD

DUBORD

Dublin

mer. 10/8

9:00 am-8:22 pm

2 stops17h 22m

Chicago O'Hare Intl

lun. 10/13

3:45 pm-12:10 pm

1 stop14h 25m

$498

DublinChicago

DUB - ORD

DUBORD

Dublin

lun. 9/15

1:45 pm-3:45 pm

Nonstop8h 00m

Chicago O'Hare Intl

mar. 9/30

10:15 pm-11:40 am

Nonstop7h 25m

$513

DublinChicago

DUB - ORD

DUBORD

Dublin

mar. 9/16

11:35 am-1:35 pm

Nonstop8h 00m

Chicago O'Hare Intl

sam. 9/27

8:20 pm-9:45 am

Nonstop7h 25m

$533

DublinChicago

DUB - ORD

DUBORD

Dublin

ven. 10/31

8:50 am-9:31 pm

2 stops17h 41m

Chicago O'Hare Intl

mar. 11/4

1:25 pm-12:40 pm

2 stops17h 15m

$538

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Showing 1-10 of 26 results
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The best insider tips for Dublin 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 Dublin to Chicago O'Hare Intl Airport trip
Airports
DUB

For US travelers, preclearance at DUB can be time-consuming. Allow 30-45 minutes after security for this process.

Read more about DUBby James March
ORD

At ORD, all international flights arrive at Terminal 5. Prepare for long walks to immigration and other terminals.

Read more about ORDby Ramsey Qubein
Our travel experts
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
James March

James March

Expert on DUB

James March

James March

For UK-based James March, nothing beats the thrill and chaos of arriving in a new city for the first time, and he tries to put that feeling into his writing and inspire others to travel too. From Birmingham to Blackpool and Leicester to Liverpool, James has reviewed hotels, written narratives and created guides for those who love to travel.

Read more

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

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

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

Use this chart to determine the optimal time to book a round-trip flight from Dublin to O'Hare Intl. Price data was last updated on July 25, 2025.

To ensure you get the cheapest price possible for a flight from Dublin to Chicago O'Hare Intl Airport, you should look to book at least 37 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 Dublin to Chicago O'Hare Intl Airport?

Currently, August is the cheapest month in which you can book a flight from Dublin to Chicago O'Hare Intl Airport (average of $245). Flying from Dublin 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 DUB to ORD?

Find hourly flight availability from Dublin 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 juillet 28, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 10% on flights from Dublin to Chicago O'Hare Intl Airport by exploring options for tickets in the morning.

Weekly flight availability from Dublin to Chicago O'Hare Intl Airport

Explore weekly flight availability from Dublin to O'Hare Intl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated juillet 28, 2025.

The most flights from DUB to ORD are scheduled on a Monday (18 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (17 on average).

How much does it cost to fly round-trip from Dublin to Chicago O'Hare Intl Airport?

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 juillet 28, 2025.
Get a feel of what it's like to fly with Delta, Austrian Airlines, and Finnair from Dublin to Chicago O'Hare Intl Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,975 reviews

Crew

8.5

Food

7.3

Boarding

8.2

Overall

8.0

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Delta
8.0
Very good
7,975 reviews
Delta
8.0
Very good
7,975 reviews

Crew

8.5

Food

7.3

Boarding

8.2

Overall

8.0

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Austrian Airlines
7.6
Good
820 reviews
Delta
8.0
Very good
7,975 reviews

Crew

8.5

Food

7.3

Boarding

8.2

Overall

8.0

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Finnair
7.6
Good
1,316 reviews
Delta
8.0
Very good
7,975 reviews

Crew

8.5

Food

7.3

Boarding

8.2

Overall

8.0

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
SWISS
7.6
Good
1,679 reviews
Delta
8.0
Very good
7,975 reviews

Crew

8.5

Food

7.3

Boarding

8.2

Overall

8.0

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
United Airlines
7.4
Good
8,892 reviews
Delta
8.0
Very good
7,975 reviews

Crew

8.5

Food

7.3

Boarding

8.2

Overall

8.0

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.

Related info for your journey

Find useful and relevant information for your journey from Dublin 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 Dublin to Chicago O'Hare Intl?

    Most people fly from Dublin (DUB) if they book a flight from Dublin to Chicago O'Hare Intl. On average, Dublin has 17 outbound flights to Chicago O'Hare Intl per day from 2 airlines. Dublin is conveniently located just 5.7 mi from Dublin’s city center.

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

    Our cheapest airline available from Dublin to Chicago O'Hare Intl Airport is United Airlines. Our recent data shows that you can find tickets from as low as $484 on this airline. Additional options worth looking into are Air Canada and Scandinavian Airlines, starting at $485 and $486 round-trip. United Airlines is 19% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Dublin to Chicago O'Hare Intl Airport one-way?

    To fly one-way, consider booking your trip with Icelandair, which is currently one of the cheapest options available, starting at $571. British Airways flights start at $574 while deals on Aer Lingus start at $576 one-way.

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

    Consider Aer Lingus (56%), American Airlines (56%) or British Airways (56%) when booking your flight. These represent the most reliable airlines when flying from Dublin to Chicago O'Hare Intl Airport.

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

    On average you can expect to pay $1,051 for a flight from Dublin to Chicago O'Hare Intl Airport. The cheapest flight overall is $498 while the most popular route, (Dublin - Chicago O'Hare Intl) is currently priced at $378.

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

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

  • How can I find direct flights from Dublin 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 Dublin to O'Hare Intl.

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

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

    Currently, August is the cheapest month in which you can book a flight from Dublin to Chicago O'Hare Intl Airport (average of $245). Flying from Dublin 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
Beloit
Hoffman Estates
Skokie
Naperville
Arlington Heights
Des Plaines
Elgin
Orland Park
Elk Grove Village
Racine
Rockford
Tinley Park
Merrillville
Evanston
Lake Geneva
Gurnee
Joliet
Waukegan

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Alternative routes for Dublin to O'Hare Intl

See prices for flight routes from nearby airports that may be better suited for you.
Shannon to O'Hare Intl flights
Cork to O'Hare Intl flights
Milltown (Kerry) to O'Hare Intl flights

Top 2 airlines flying from Dublin to O'Hare Intl

Discover the top 2 airlines that operate flights from Dublin 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 juillet 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$447Average$582FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$667Average$757FlexibilityNo cancel feeOn-time69%

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