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Cheap flights from Ireland to Chicago O'Hare Intl Airport from £236

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 9/6. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — ORD
4 Jun — 11 Jun1
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 5 May 2026.

Thu 9/711:30
DUB
-
ORD
1 stop16h 25m
JetBlue
Tue 14/709:39
ORD
-
DUB
1 stop17h 21m
JetBlue
Deal found 2/5£455
Thu 18/609:30
DUB
-
ORD
Nonstop7h 59m
Finnair
Sun 21/622:20
ORD
-
DUB
Nonstop7h 30m
Finnair
Deal found 30/4£457
Fri 15/509:30
DUB
-
ORD
Nonstop8h 00m
British Airways
Thu 28/521:15
ORD
-
DUB
1 stop11h 15m
British Airways
Deal found 2/5£460
Tue 23/609:30
DUB
-
ORD
Nonstop7h 59m
Multiple Airlines
Mon 29/618:10
ORD
-
DUB
1 stop11h 50m
Multiple Airlines
Deal found 30/4£466
Fri 15/513:45
DUB
-
ORD
1 stop13h 50m
Iberia
Thu 28/522:20
ORD
-
DUB
Nonstop7h 30m
Iberia
Deal found 1/5£467
Mon 22/609:30
DUB
-
ORD
Nonstop7h 59m
Multiple Airlines
Mon 29/618:10
ORD
-
DUB
1 stop11h 50m
Multiple Airlines
Deal found 3/5£468
Tue 16/609:30
DUB
-
ORD
Nonstop7h 59m
Iberia
Tue 23/613:38
ORD
-
DUB
1 stop10h 52m
Iberia
Deal found 2/5£469
Fri 15/509:30
DUB
-
ORD
Nonstop8h 00m
Finnair
Mon 25/522:20
ORD
-
DUB
Nonstop7h 30m
Finnair
Deal found 1/5£471
Thu 18/609:30
DUB
-
ORD
Nonstop7h 59m
Finnair
Sat 27/622:20
ORD
-
DUB
Nonstop7h 30m
Finnair
Deal found 4/5£473
Wed 13/509:30
DUB
-
ORD
Nonstop8h 00m
Finnair
Tue 26/522:20
ORD
-
DUB
Nonstop7h 30m
Finnair
Deal found 2/5£474

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 5 May 2026.

Round-trip from

£455

One-way from

£236

Popular in

August

Cheapest in

September

Average price

£479

Good round-trip deal

£475 or less

Good one-way deal

£499 or less
JetBlue
  • JetBlue
  • 9/7-18/7
  • 2 total stops
  • 28h 50m total
  • Ireland to Chicago
Search Deals
JetBlue
  • JetBlue
  • 9/6
  • 1 total stop
  • 17h 28m total
  • Ireland to Chicago
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (£28 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 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 5 May 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

Fri 29/5

05:55-14:15

1 stop14h 20m

Chicago O'Hare Intl

Fri 5/6

15:50-10:45

1 stop12h 55m

£489

DublinChicago

DUB - ORD

DUBORD

Dublin

Mon 15/6

05:55-16:26

2 stops16h 31m

Chicago O'Hare Intl

Mon 22/6

09:48-08:45

1 stop16h 57m

£493

DublinChicago

DUB - ORD

DUBORD

Dublin

Sun 21/6

11:30-21:29

1 stop15h 59m

Chicago O'Hare Intl

Sat 4/7

13:55-08:20

1 stop12h 25m

£608

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 6/8

09:30-11:30

Nonstop8h 00m

Chicago O'Hare Intl

Tue 25/8

22:35-17:00

1 stop12h 25m

£617
Fastest return journey

DublinChicago

DUB - ORD

DUBORD

Dublin

Tue 18/8

09:30-11:30

Nonstop8h 00m

Chicago O'Hare Intl

Sat 29/8

22:30-11:50

Nonstop7h 20m

£624

DublinChicago

DUB - ORD

DUBORD

Dublin

Mon 3/8

09:30-11:30

Nonstop8h 00m

Chicago O'Hare Intl

Mon 10/8

22:30-11:50

Nonstop7h 20m

£624

DublinChicago

DUB - ORD

DUBORD

Dublin

Tue 18/8

09:30-11:30

Nonstop8h 00m

Chicago O'Hare Intl

Sun 30/8

22:30-11:50

Nonstop7h 20m

£624

DublinChicago

DUB - ORD

DUBORD

Dublin

Mon 3/8

12:00-18:15

1 stop12h 15m

Chicago O'Hare Intl

Mon 10/8

22:35-15:45

1 stop11h 10m

£637

DublinChicago

DUB - ORD

DUBORD

Dublin

Mon 3/8

09:30-11:30

Nonstop8h 00m

Chicago O'Hare Intl

Mon 10/8

22:35-18:40

1 stop14h 05m

£644

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 9/7

06:00-14:55

1 stop14h 55m

Chicago O'Hare Intl

Wed 15/7

20:20-09:45

Nonstop7h 25m

£661

Flights are sorted by cheapest return flights first.

Deals found on 1/5

Showing 1-10 of 21 resultsSorted by cheapest first
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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

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

The best time to book flights from Ireland to Chicago O'Hare Intl Airport is 89 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 Ireland to Chicago O'Hare Intl Airport?

Currently, October is the cheapest month in which you can book a flight from Ireland to Chicago O'Hare Intl Airport (average of £290). Flying from Ireland to Chicago O'Hare Intl Airport in July is currently the most expensive (average of £452). 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 5 May 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.

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

Explore weekly flight availability from Ireland 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 5 May 2026.

The most flights from IE0 to ORD are scheduled on a Thursday (14 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (12 on average).

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 139 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 5 May 2026.
Read reviews from past customers who have flown with Finnair,United Airlines, andAer Lingus 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.
Finnair
7.6
Good
1,392 reviews
Check prices

Overall

7.6

Comfort

7.4

Entertainment

6.9

Food

6.7

Boarding

7.7

Crew

8.2

Reviews

1 / 20
2.0
Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights
Finnair
7.6
Good
1,392 reviews
Finnair
7.6
Good
1,392 reviews
Check prices

Overall

7.6

Comfort

7.4

Entertainment

6.9

Food

6.7

Boarding

7.7

Crew

8.2

Reviews

1 / 20
2.0
Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights
United Airlines
7.4
Good
9,683 reviews
Finnair
7.6
Good
1,392 reviews
Check prices

Overall

7.6

Comfort

7.4

Entertainment

6.9

Food

6.7

Boarding

7.7

Crew

8.2

Reviews

1 / 20
2.0
Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights
Aer Lingus
7.3
Good
1,541 reviews
Finnair
7.6
Good
1,392 reviews
Check prices

Overall

7.6

Comfort

7.4

Entertainment

6.9

Food

6.7

Boarding

7.7

Crew

8.2

Reviews

1 / 20
2.0
Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights
American Airlines
7.1
Good
11,667 reviews
Finnair
7.6
Good
1,392 reviews
Check prices

Overall

7.6

Comfort

7.4

Entertainment

6.9

Food

6.7

Boarding

7.7

Crew

8.2

Reviews

1 / 20
2.0
Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights
Lufthansa
6.8
Okay
7,972 reviews
Finnair
7.6
Good
1,392 reviews
Check prices

Overall

7.6

Comfort

7.4

Entertainment

6.9

Food

6.7

Boarding

7.7

Crew

8.2

Reviews

1 / 20
2.0
Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights

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 Delta, JetBlue, or Finnair to get the fastest option. The distance between Ireland 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 most reliable airlines from Ireland to Chicago O'Hare Intl Airport?

    Consider Air Canada (77%), Austrian Airlines (77%) or Brussels Airlines (77%) 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 £552 for a flight from Ireland to Chicago O'Hare Intl Airport. The cheapest flight overall is £372 while the most popular route, (Dublin - Chicago O'Hare Intl) is currently priced at £457.

  • 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, October is the cheapest month in which you can book a flight from Ireland to Chicago O'Hare Intl Airport (average of £290). Flying from Ireland to Chicago O'Hare Intl Airport in July is currently the most expensive (average of £452). 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

Browse thousands of different options on Cheapflights for your next trip

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Top 5 airlines flying from Ireland to O'Hare Intl

Discover the top 5 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 5 May 2026.
AirlineCheapestAverageFlexibilityOn-time
FinnairCheapest£321Average£567FlexibilityNo cancel feeOn-time76%
Search Finnair flights
LufthansaCheapest£329Average£660FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Aer LingusCheapest£341Average£521FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
United AirlinesCheapest£351Average£637FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapest£449Average£565FlexibilityNo 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 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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