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O'Hare Intl

$451+ 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 10/6. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — ORD
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
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 September, booked 67 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 September 11, 2025.

Round-trip from

$454
(lastminute.com)

Popular in

July

Cheapest in

February

Average price

$516

Good round-trip deal

$531 or less

Good one-way deal

$572 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 ($100 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 September 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 September 11, 2025.

This TravelUp 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/611:45 amDUB - ORD
1 stop11h 51mMultiple Airlines
Sun 10/1210:35 pmORD - DUB
1 stop15h 00mMultiple Airlines
Deal found 9/11$451
This lastminute.com 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2411:35 amDUB - ORD
Nonstop8h 25mAer Lingus
Wed 10/19:15 pmORD - DUB
Nonstop7h 25mAer Lingus
Deal found 9/9$454
This Flighttix 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 Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/135:55 amDUB - ORD
1 stop15h 00mLufthansa
Wed 10/228:20 pmORD - DUB
Nonstop7h 25mLufthansa
Deal found 9/11$455
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.
Mon 10/138:45 amDUB - ORD
1 stop13h 10mAmerican Airlines
Tue 10/2110:35 pmORD - DUB
1 stop12h 30mAmerican Airlines
Deal found 9/11$456
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/198:35 amDUB - ORD
1 stop12h 15mAmerican Airlines
Sat 10/114:55 pmORD - DUB
1 stop10h 40mAmerican Airlines
Deal found 9/10$457
This Lufthansa 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/255:55 amDUB - ORD
1 stop15h 00mLufthansa
Sun 10/58:20 pmORD - DUB
Nonstop7h 25mLufthansa
Deal found 9/11$458
This Icelandair 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/182:15 pmDUB - ORD
1 stop13h 00mIcelandair
Wed 10/17:25 pmORD - DUB
1 stop11h 50mIcelandair
Deal found 9/9$459
This Lufthansa 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/235:55 amDUB - ORD
1 stop13h 00mMultiple Airlines
Wed 11/56:50 pmORD - DUB
1 stop16h 55mMultiple Airlines
Deal found 9/11$460
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/315:55 amDUB - ORD
1 stop14h 25mDelta
Mon 11/34:56 pmORD - DUB
2 stops16h 49mDelta
Deal found 9/10$461
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/194:40 pmDUB - ORD
Nonstop8h 20mAer Lingus
Sun 9/289:15 pmORD - DUB
Nonstop7h 25mAer Lingus
Deal found 9/10$462
This British Airways 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/278:50 amDUB - ORD
2 stops20h 03mBritish Airways
Fri 11/74:06 pmORD - DUB
2 stops16h 14mBritish Airways
Deal found 9/11$463
This TravelUp 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/188:35 amDUB - ORD
1 stop12h 15mMultiple Airlines
Sat 9/2710:15 pmORD - DUB
Nonstop7h 25mMultiple Airlines
Deal found 9/10$464

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 September 11, 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

Thu 10/30

9:20 am-9:05 pm

1 stop16h 45m

Chicago O'Hare Intl

Wed 11/12

6:35 pm-8:10 am

Nonstop7h 35m

$455

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 9/25

5:55 am-2:55 pm

1 stop15h 00m

Chicago O'Hare Intl

Sun 9/28

8:20 pm-9:45 am

Nonstop7h 25m

$458

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 9/25

5:55 am-2:55 pm

1 stop15h 00m

Chicago O'Hare Intl

Sun 10/5

8:20 pm-9:45 am

Nonstop7h 25m

$458

DublinChicago

DUB - ORD

DUBORD

Dublin

Sun 10/26

5:55 am-3:20 pm

1 stop14h 25m

Chicago O'Hare Intl

Tue 11/4

5:20 pm-3:45 pm

1 stop16h 25m

$459

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 1/29

11:30 am-4:45 pm

2 stops35h 15m

Chicago O'Hare Intl

Sun 2/1

7:10 pm-7:35 pm

2 stops18h 25m

$459

DublinChicago

DUB - ORD

DUBORD

Dublin

Tue 9/23

5:55 am-2:55 pm

1 stop15h 00m

Chicago O'Hare Intl

Tue 9/30

8:20 pm-9:45 am

Nonstop7h 25m

$459

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 9/25

5:55 am-2:55 pm

1 stop15h 00m

Chicago O'Hare Intl

Mon 9/29

8:20 pm-9:45 am

Nonstop7h 25m

$459

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 10/31

5:55 am-3:20 pm

1 stop14h 25m

Chicago O'Hare Intl

Mon 11/3

4:56 pm-3:45 pm

2 stops16h 49m

$461

DublinChicago

DUB - ORD

DUBORD

Dublin

Sat 11/1

8:50 am-3:20 pm

1 stop11h 30m

Chicago O'Hare Intl

Fri 11/7

10:37 am-7:50 am

2 stops15h 13m

$461

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 11/27

11:30 am-2:00 pm

Nonstop8h 30m

Chicago O'Hare Intl

Sun 11/30

7:40 pm-9:00 am

Nonstop7h 20m

$462

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/8

Showing 1-10 of 23 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 August 29, 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 67 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 September 11, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 12% on flights from Dublin to Chicago O'Hare Intl Airport by exploring options for tickets in the afternoon.

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 September 11, 2025.
Get a feel of what it's like to fly with United Airlines, Aer Lingus, and Lufthansa 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.
United Airlines
7.4
Good
8,937 reviews

Entertainment

7.1

Food

6.6

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
United Airlines
7.4
Good
8,937 reviews
United Airlines
7.4
Good
8,937 reviews

Entertainment

7.1

Food

6.6

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
Aer Lingus
7.2
Good
1,271 reviews
United Airlines
7.4
Good
8,937 reviews

Entertainment

7.1

Food

6.6

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
Lufthansa
6.8
Okay
7,409 reviews
United Airlines
7.4
Good
8,937 reviews

Entertainment

7.1

Food

6.6

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.

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 18 outbound flights to Chicago O'Hare Intl per day from 3 airlines. Dublin is conveniently located just 5.7 mi from Dublin’s city center.

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

    Departing from Dublin to Chicago O'Hare Intl Airport will take you 16h 45m. The distance from Dublin to Chicago O'Hare Intl Airport is about 3661 mi.

  • 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 Lufthansa. Our recent data shows that you can find tickets from as low as $393 on this airline. Additional options worth looking into are Aer Lingus and United Airlines, starting at $447 and $473 round-trip. Lufthansa is 34% cheaper than the average price of flights available within the next 90 days to this destination.

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

    Consider Iberia (83%), American Airlines (75%) or Aer Lingus (75%) 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 $1,167 for a flight from Dublin to Chicago O'Hare Intl Airport. The cheapest flight overall is $463 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
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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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 3 airlines flying from Dublin to O'Hare Intl

Discover the top 3 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$393Average$514FlexibilityNo cancel feeOn-time76%
Aer LingusCheapest$447Average$581FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$473Average$752FlexibilityNo cancel feeOn-time69%

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