Cheap flights from Dublin to Chicago O'Hare Intl Airport from £332

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 25/1. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — ORD
30 Nov — 7 Dec1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from Dublin to Chicago O'Hare Intl are usually found in September or February, booked 31 days in advance, depart on a Wednesday or Tuesday and return on a Monday

Find flight deals from Dublin to O'Hare Intl

Enter your travel dates to find the best prices.

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 31 October 2025.

Mon 24/1111:30DUB - ORD
1 stop11h 50mIcelandair
Fri 28/1118:30ORD - DUB
1 stop9h 45mIcelandair
Deal found 29/10£343
Fri 5/1218:55DUB - ORD
2 stops27h 50mScandinavian Airlines
Sun 7/1219:20ORD - DUB
2 stops18h 15mScandinavian Airlines
Deal found 30/10£351
Fri 7/1108:50DUB - ORD
1 stop11h 30mDelta
Sat 15/1110:35ORD - DUB
2 stops15h 25mDelta
Deal found 30/10£356
Fri 7/1108:50DUB - ORD
1 stop11h 30mDelta
Fri 14/1110:35ORD - DUB
2 stops15h 25mDelta
Deal found 30/10£357
Wed 26/1105:55DUB - ORD
1 stop14h 25mDelta
Wed 3/1217:20ORD - DUB
1 stop16h 25mDelta
Deal found 29/10£357
Sun 9/1108:50DUB - ORD
1 stop11h 30mKLM
Mon 24/1113:25ORD - DUB
1 stop13h 20mKLM
Deal found 30/10£358
Thu 6/1117:15DUB - ORD
1 stop27h 05mMultiple Airlines
Sun 23/1113:25ORD - DUB
1 stop13h 20mMultiple Airlines
Deal found 28/10£359
Sun 9/1108:50DUB - ORD
1 stop11h 30mDelta
Mon 17/1110:46ORD - DUB
2 stops15h 19mDelta
Deal found 30/10£360
Thu 6/1108:45DUB - ORD
1 stop12h 25mDelta
Thu 13/1117:20ORD - DUB
1 stop16h 25mDelta
Deal found 30/10£361
Thu 6/1106:00DUB - ORD
1 stop15h 10mDelta
Sat 15/1110:35ORD - DUB
2 stops15h 25mDelta
Deal found 29/10£362
Fri 7/1108:50DUB - ORD
2 stops17h 33mDelta
Sun 16/1110:35ORD - DUB
1 stop16h 45mDelta
Deal found 30/10£364

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 31 October 2025.

Round-trip from

£342

Popular in

July

Cheapest in

September

Average price

£465

Good round-trip deal

£424 or less

Good one-way deal

£436 or less
Icelandair
  • Icelandair
  • 5/12-16/12
  • 2 total stops
  • 21h 35m total
  • Dublin to Chicago
Highest demand for flights based on searches. 15% potential increase in price (£64 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).
Average for round-trip flights in October 2025
Price to beat on a round-trip flight from Dublin to Chicago O'Hare Intl.
Price to beat on a one-way flight from Dublin to Chicago O'Hare Intl.

Cheapflights Fare Finder

 
Customise 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 858,174 searches. Data last updated 31 October 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

Wed 24/12

05:55-14:20

1 stop14h 25m

Chicago O'Hare Intl

Sat 10/1

07:00-08:05

2 stops19h 05m

£351

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 11/12

08:50-20:35

2 stops17h 45m

Chicago O'Hare Intl

Mon 2/2

07:01-07:50

2 stops18h 49m

£351

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 13/2

09:00-15:10

1 stop12h 10m

Chicago O'Hare Intl

Fri 20/2

18:35-08:10

Nonstop7h 35m

£353

DublinChicago

DUB - ORD

DUBORD

Dublin

Mon 8/12

09:00-15:10

1 stop12h 10m

Chicago O'Hare Intl

Mon 15/12

18:35-08:10

Nonstop7h 35m

£353

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 12/12

09:00-16:52

1 stop13h 52m

Chicago O'Hare Intl

Fri 30/1

15:35-07:30

1 stop9h 55m

£356

DublinChicago

DUB - ORD

DUBORD

Dublin

Sun 22/2

06:00-15:10

1 stop15h 10m

Chicago O'Hare Intl

Wed 4/3

10:40-08:05

2 stops15h 25m

£356

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 12/12

09:00-15:10

1 stop12h 10m

Chicago O'Hare Intl

Wed 4/2

15:35-07:30

1 stop9h 55m

£356

DublinChicago

DUB - ORD

DUBORD

Dublin

Sun 1/3

05:55-14:20

1 stop14h 25m

Chicago O'Hare Intl

Wed 11/3

18:20-15:45

1 stop16h 25m

£357

DublinChicago

DUB - ORD

DUBORD

Dublin

Tue 9/12

10:40-13:30

Nonstop8h 50m

Chicago O'Hare Intl

Wed 28/1

14:27-07:30

1 stop11h 03m

£357

DublinChicago

DUB - ORD

DUBORD

Dublin

Mon 10/11

08:50-14:20

1 stop11h 30m

Chicago O'Hare Intl

Tue 18/11

10:35-07:50

2 stops15h 15m

£357

Flights are sorted by cheapest return flights first.

Deals found on 28/10

Showing 1-10 of 21 results
1
2
3

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 return 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 return flight from Dublin to O'Hare Intl. Price data was last updated on 24 October 2025.

The best time to book flights from Dublin to Chicago O'Hare Intl Airport is 31 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, February is the cheapest month in which you can book a flight from Dublin to Chicago O'Hare Intl Airport (average of £297). Flying from Dublin to Chicago O'Hare Intl Airport in July is currently the most expensive (average of £472). 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 31 October 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Dublin to Chicago O'Hare Intl Airport as you normally would.

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 31 October 2025.
See what other customers who have flown with Finnair, United Airlines, andAer Lingus from Dublin to Chicago O'Hare Intl Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Overall

7.6

Boarding

7.6

Entertainment

6.9

Crew

8.1

Comfort

7.4

Food

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

Overall

7.6

Boarding

7.6

Entertainment

6.9

Crew

8.1

Comfort

7.4

Food

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

Overall

7.6

Boarding

7.6

Entertainment

6.9

Crew

8.1

Comfort

7.4

Food

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

Overall

7.6

Boarding

7.6

Entertainment

6.9

Crew

8.1

Comfort

7.4

Food

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

Overall

7.6

Boarding

7.6

Entertainment

6.9

Crew

8.1

Comfort

7.4

Food

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

Overall

7.6

Boarding

7.6

Entertainment

6.9

Crew

8.1

Comfort

7.4

Food

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

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?

    Located just 5.7 mi from the city center, Dublin is the airport most travelers will use when flying to Chicago O'Hare Intl from Dublin. Booking flights from Dublin (DUB) to Chicago O'Hare Intl should be relatively easy as there are 8 daily outbound flights to Chicago O'Hare Intl from 6 different airlines.

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

    A quick flight from Dublin to Chicago O'Hare Intl Airport can take about 12h 10m. Delta provides one of the quickest options available for as low as £353. The distance between Dublin and Chicago O'Hare Intl Airport is about 3661 mi. Both multi-stop and direct flights can be found to your destination and back.

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

    Currently priced at £245, Icelandair will fly you from Dublin to Chicago O'Hare Intl Airport and back. In addition to Icelandair, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from British Airways and Finnair - these airlines can fly you to your destination from £305 and £321, respectively. Icelandair is 46% 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?

    Before booking your flight to Chicago O'Hare Intl Airport from Dublin, check out the most reliable airlines to get you to your destination on time: American Airlines (80%), Aer Lingus (80%), Iberia( 80%).

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

    Looking for the cheapest flight from Dublin to Chicago O'Hare Intl Airport? While on average our users pay £1,021, our data indicates the cheapest price to be £341. The most popular route (Dublin - Chicago O'Hare Intl), is priced around £319.

  • 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 holiday 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, February is the cheapest month in which you can book a flight from Dublin to Chicago O'Hare Intl Airport (average of £297). Flying from Dublin to Chicago O'Hare Intl Airport in July is currently the most expensive (average of £472). 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

Travelling 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
Downers Grove
Elk Grove Village

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Dublin to O'Hare Intl

See prices for flight routes from nearby airports that may be better suited for you.

Top 6 airlines flying from Dublin to O'Hare Intl

Discover the top 6 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 858,174 searches. Data last updated 31 October 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£245Average£365FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
British AirwaysCheapest£305Average£486FlexibilityNo cancel feeOn-time70%
Search British Airways flights
FinnairCheapest£321Average£558FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Aer LingusCheapest£349Average£484FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
United AirlinesCheapest£361Average£637FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapest£462Average£577FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Dublin to O'Hare Intl?

Deals for Dublin to O'Hare Intl flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Dublin to O'Hare Intl?

Cheapflights helps you find that perfect flight to O'Hare Intl from Dublin by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Dublin to O'Hare Intl with no change fees?

Need flexible booking options for your flight to O'Hare Intl from Dublin? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Dublin to O'Hare Intl become cheaper?

Yes! Start tracking prices for Dublin to O'Hare Intl flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.