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Cheap flights from Ireland to Chicago O'Hare Intl Airport from £312

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 27/5. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — ORD
5 Apr — 12 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Ireland to O'Hare Intl

Enter your travel dates to find the best prices.

Cheapest flights from Ireland to O'Hare Intl
Explore the most affordable flight options available from Ireland to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 6 March 2026.

Tue 21/408:35
DUB
-
ORD
1 stop12h 20m
Multiple Airlines
Tue 28/421:15
ORD
-
DUB
1 stop13h 45m
Multiple Airlines
Deal found 2/3£331
Fri 22/509:30
DUB
-
ORD
Nonstop8h 00m
Finnair
Tue 2/622:25
ORD
-
DUB
Nonstop7h 25m
Finnair
Deal found 2/3£333
Mon 13/409:30
DUB
-
ORD
1 stop16h 27m
Multiple Airlines
Sun 19/422:30
ORD
-
DUB
1 stop11h 50m
Multiple Airlines
Deal found 4/3£336
Tue 5/508:35
DUB
-
ORD
1 stop15h 00m
Multiple Airlines
Tue 12/522:25
ORD
-
DUB
Nonstop7h 25m
Multiple Airlines
Deal found 2/3£338
Thu 9/409:30
DUB
-
ORD
1 stop16h 27m
Multiple Airlines
Thu 16/422:30
ORD
-
DUB
1 stop13h 25m
Multiple Airlines
Deal found 3/3£339
Tue 12/510:30
DUB
-
ORD
1 stop13h 05m
Multiple Airlines
Sun 17/522:25
ORD
-
DUB
Nonstop7h 25m
Multiple Airlines
Deal found 1/3£339
Thu 16/409:30
DUB
-
ORD
1 stop16h 27m
Multiple Airlines
Thu 23/422:30
ORD
-
DUB
1 stop13h 25m
Multiple Airlines
Deal found 2/3£340
Thu 9/409:30
DUB
-
ORD
1 stop16h 27m
Multiple Airlines
Sat 18/417:55
ORD
-
DUB
1 stop12h 05m
Multiple Airlines
Deal found 2/3£341
Fri 17/409:30
DUB
-
ORD
1 stop16h 27m
Multiple Airlines
Fri 24/420:35
ORD
-
DUB
1 stop15h 15m
Multiple Airlines
Deal found 3/3£345
Thu 7/508:35
DUB
-
ORD
1 stop15h 40m
Multiple Airlines
Sun 10/522:30
ORD
-
DUB
1 stop11h 50m
Multiple Airlines
Deal found 4/3£345

Find flight deals from Ireland to O'Hare Intl

Keep the following information in mind while searching for Ireland to O'Hare Intl flight deals. Data was last updated 6 March 2026.

Round-trip from

£331

One-way from

£312

Popular in

July

Cheapest in

November

Average price

£471

Good round-trip deal

£498 or less

Good one-way deal

£419 or less
21/4-28/4
  • 21/4-28/4
  • 2 total stops
  • 26h 05m total
  • Ireland to Chicago
Search Deals
Finnair
  • Finnair
  • 27/5
  • Nonstop
  • 8h 00m total
  • Ireland to Chicago
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (£38 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£6 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2026
Search Deals
Price to beat on a round-trip flight from Ireland to Chicago O'Hare Intl.
Search Deals
Price to beat on a one-way flight from Ireland to Chicago O'Hare Intl.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Ireland 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 6 March 2026.
Use the filters below to find and compare flights from Ireland to Chicago O'Hare Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

DublinChicago

DUB - ORD

DUBORD

Dublin

Tue 21/4

08:35-14:55

1 stop12h 20m

Chicago O'Hare Intl

Tue 28/4

21:15-17:00

1 stop13h 45m

£331
Fastest return journey

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 27/5

09:30-11:30

Nonstop8h 00m

Chicago O'Hare Intl

Sun 7/6

22:25-11:50

Nonstop7h 25m

£350

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 22/4

09:30-19:57

1 stop16h 27m

Chicago O'Hare Intl

Sun 26/4

12:30-09:45

1 stop15h 15m

£355

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 27/5

08:35-18:15

1 stop15h 40m

Chicago O'Hare Intl

Sun 7/6

22:25-11:50

Nonstop7h 25m

£373

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 16/4

14:15-18:15

1 stop10h 00m

Chicago O'Hare Intl

Sun 19/4

19:25-13:15

1 stop11h 50m

£424

DublinChicago

DUB - ORD

DUBORD

Dublin

Tue 21/4

05:55-16:18

2 stops16h 23m

Chicago O'Hare Intl

Tue 28/4

19:09-16:40

2 stops15h 31m

£463

DublinChicago

DUB - ORD

DUBORD

Dublin

Sun 19/4

05:55-18:13

2 stops18h 18m

Chicago O'Hare Intl

Sun 26/4

13:06-09:15

1 stop14h 09m

£485

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 27/5

05:55-14:30

1 stop14h 35m

Chicago O'Hare Intl

Sun 7/6

09:30-08:45

1 stop17h 15m

£488
Cheapest one-way
Fastest single journey

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 14/5

09:30-11:30

Nonstop8h 00m

£314

DublinChicago

DUB - ORD

DUBORD

Dublin

Tue 12/5

09:30-11:30

Nonstop8h 00m

£314

Flights are sorted by cheapest return flights first.

Deals found on 2/3

Showing 1-10 of 18 resultsSorted by cheapest first
1
2

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

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

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

Currently, March is the cheapest month in which you can book a flight from Ireland to Chicago O'Hare Intl Airport (average of £317). Flying from Ireland to Chicago O'Hare Intl Airport in July is currently the most expensive (average of £479). 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 IE to ORD?

Find hourly flight availability from Ireland 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 6 March 2026.

When flying from Ireland to Chicago O'Hare Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How often are flights from Ireland to Chicago delayed?

About 13% of weekly flights between Ireland and Chicago have experienced delays in the past year, with the average delay time being 136 minutes.

What is the most punctual flight time for Ireland to Chicago flights?

Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Monday tends to have the lowest number of delays on this route, whereas Tuesday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Ireland to Chicago flights?

Over the past year, Aer Lingus have had the lowest number of delays on this route, with just 8% of flights being delayed.

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 6 March 2026.
Read reviews from past customers who have flown with United Airlines, Aer Lingus, andIcelandair from Ireland to Chicago O'Hare Intl Airport. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,403 reviews
Check prices

Entertainment

7.1

Crew

8.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Food

6.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
United Airlines
7.4
Good
9,403 reviews
United Airlines
7.4
Good
9,403 reviews
Check prices

Entertainment

7.1

Crew

8.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Food

6.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
Aer Lingus
7.2
Good
1,471 reviews
United Airlines
7.4
Good
9,403 reviews
Check prices

Entertainment

7.1

Crew

8.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Food

6.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
Icelandair
7.1
Good
617 reviews
United Airlines
7.4
Good
9,403 reviews
Check prices

Entertainment

7.1

Crew

8.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Food

6.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.

Related info for your journey

Find useful and relevant information for your journey from Ireland 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.

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

    There are many flights that can get you from Ireland to Chicago O'Hare Intl Airport in 8h. Fly via Finnair to get the fastest option. The distance between Ireland and Chicago O'Hare Intl Airport is about 3661 mi. Generally, flights for this route are direct.

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

    Consider American Airlines (93%), Aer Lingus (93%) or Iberia (93%) when booking your flight. These represent the most reliable airlines when flying from Ireland to Chicago O'Hare Intl Airport.

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

    On average you can expect to pay £997 for a flight from Ireland to Chicago O'Hare Intl Airport. The cheapest flight overall is £353 while the most popular route, (Dublin - Chicago O'Hare Intl) is currently priced at £423.

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

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

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

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

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

    Currently, March is the cheapest month in which you can book a flight from Ireland to Chicago O'Hare Intl Airport (average of £317). Flying from Ireland to Chicago O'Hare Intl Airport in July is currently the most expensive (average of £479). 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
Elk Grove Village

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Alternative routes for Ireland to O'Hare Intl

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to O'Hare Intl flights
Heathrow to Midway flights
Gatwick to O'Hare Intl flights
London City to O'Hare Intl flights
Stansted to O'Hare Intl flights
Luton to O'Hare Intl flights
Edinburgh to O'Hare Intl flights
Manchester to O'Hare Intl flights
Gatwick to Midway flights
Edinburgh to Midway flights
Birmingham to O'Hare Intl flights
Manchester to Midway flights
Glasgow Intl to O'Hare Intl flights
Bristol to O'Hare Intl flights
Glasgow Intl to Midway flights
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Birmingham to Midway flights
Bristol to Midway flights
Southend to O'Hare Intl flights
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Inverness to O'Hare Intl flights
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Belfast Intl to O'Hare Intl flights
Belfast City to O'Hare Intl flights
Southampton to O'Hare Intl flights
Dublin to O'Hare Intl flights
Newquay to O'Hare Intl flights
Liverpool to O'Hare Intl flights
Grimsby to O'Hare Intl flights
Leeds to Midway flights
Istanbul to O'Hare Intl flights
Exeter to O'Hare Intl flights
Dublin to Midway flights
Athens to O'Hare Intl flights
Cardiff to Midway flights
Newcastle upon Tyne to Midway flights
Krakow to O'Hare Intl flights
Amsterdam to O'Hare Intl flights
Arlanda to O'Hare Intl flights
Southampton to Midway flights
Barcelona-El Prat to O'Hare Intl flights
Bruxelles-National to O'Hare Intl flights
Darlington to O'Hare Intl flights
Darlington to Midway flights

Top 3 airlines flying from Ireland to O'Hare Intl

Discover the top 3 airlines that operate flights from Ireland 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 6 March 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£300Average£341FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Aer LingusCheapest£347Average£490FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
United AirlinesCheapest£356Average£646FlexibilityNo cancel feeOn-time69%
Search United 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 Ireland to O'Hare Intl?

When you search for this flight from Ireland to O'Hare Intl, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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

Cheapflights simply makes it quick and affordable to book flights from Ireland to O'Hare Intl by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from Ireland to O'Hare Intl, users can toggle the no change fees filter when performing a flight search.

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

Yes! Start tracking prices for Ireland 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.

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