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Cheap flights from Ireland to Chicago O'Hare Intl Airport from £362

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 11/8. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — ORD
15 Aug — 22 Aug1
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 16 July 2026.

Tue 25/809:30
DUB
-
ORD
Nonstop8h 00m
Multiple Airlines
Tue 1/922:30
ORD
-
DUB
1 stop12h 30m
Multiple Airlines
Deal found 11/7£451
Wed 23/919:05
DUB
-
ORD
1 stop27h 05m
Scandinavian Airlines
Fri 23/1019:15
ORD
-
DUB
2 stops34h 00m
Scandinavian Airlines
Deal found 14/7£452
Wed 23/905:55
DUB
-
ORD
1 stop14h 35m
Delta
Fri 2/1013:29
ORD
-
DUB
2 stops14h 56m
Delta
Deal found 13/7£453
Wed 2/905:55
DUB
-
ORD
2 stops16h 22m
Delta
Wed 9/910:30
ORD
-
DUB
2 stops15h 45m
Delta
Deal found 13/7£454
Wed 2/909:30
DUB
-
ORD
Nonstop8h 00m
British Airways
Wed 9/921:15
ORD
-
DUB
1 stop14h 45m
British Airways
Deal found 15/7£455
Sun 27/1208:55
DUB
-
ORD
1 stop11h 30m
Multiple Airlines
Mon 11/118:10
ORD
-
DUB
2 stops14h 20m
Multiple Airlines
Deal found 13/7£456
Wed 7/1005:55
DUB
-
ORD
2 stops16h 45m
Delta
Mon 12/1012:33
ORD
-
DUB
1 stop13h 22m
Delta
Deal found 15/7£456
Thu 27/809:40
DUB
-
ORD
1 stop14h 10m
Finnair
Sat 5/922:20
ORD
-
DUB
Nonstop7h 30m
Finnair
Deal found 14/7£457
Thu 27/808:55
DUB
-
ORD
1 stop11h 20m
Delta
Sat 5/910:50
ORD
-
DUB
1 stop15h 55m
Delta
Deal found 13/7£458
Wed 26/809:40
DUB
-
ORD
1 stop14h 10m
Finnair
Sun 30/822:20
ORD
-
DUB
Nonstop7h 30m
Finnair
Deal found 11/7£459
Wed 26/808:55
DUB
-
ORD
1 stop11h 35m
Delta
Wed 2/910:30
ORD
-
DUB
2 stops15h 50m
Delta
Deal found 12/7£459

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 16 July 2026.

Round-trip from

£451

One-way from

£362

Popular in

August

Cheapest in

November

Average price

£591

Good round-trip deal

£556 or less

Good one-way deal

£668 or less
25/8-1/9
  • 25/8-1/9
  • 1 total stop
  • 20h 30m total
  • Ireland to Chicago
Search Deals
JetBlue
  • JetBlue
  • 11/8
  • 1 total stop
  • 16h 28m total
  • Ireland to Chicago
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£63 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£11 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 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 16 July 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

Thu 24/9

05:55-18:26

2 stops18h 31m

Chicago O'Hare Intl

Sat 24/10

14:00-15:10

2 stops19h 10m

£453

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 27/8

09:30-11:30

Nonstop8h 00m

Chicago O'Hare Intl

Mon 31/8

22:30-19:35

1 stop15h 05m

£454

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 26/8

11:40-16:10

2 stops34h 30m

Chicago O'Hare Intl

Sun 30/8

19:15-18:20

1 stop17h 05m

£498

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 27/8

08:55-20:30

2 stops17h 35m

Chicago O'Hare Intl

Sun 30/8

15:51-07:55

1 stop10h 04m

£568

DublinChicago

DUB - ORD

DUBORD

Dublin

Mon 3/8

05:55-14:30

1 stop14h 35m

Chicago O'Hare Intl

Mon 10/8

10:30-08:20

2 stops15h 50m

£598

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 30/7

05:55-14:15

1 stop14h 20m

Chicago O'Hare Intl

Tue 11/8

10:30-08:15

2 stops15h 45m

£647

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 31/7

08:55-20:31

2 stops17h 36m

Chicago O'Hare Intl

Tue 11/8

10:30-08:15

2 stops15h 45m

£659
Fastest return journey

DublinChicago

DUB - ORD

DUBORD

Dublin

Mon 3/8

11:35-13:40

Nonstop8h 05m

Chicago O'Hare Intl

Mon 10/8

20:20-09:45

Nonstop7h 25m

£666

DublinChicago

DUB - ORD

DUBORD

Dublin

Mon 3/8

21:10-16:10

2 stops25h 00m

Chicago O'Hare Intl

Mon 10/8

19:15-19:05

2 stops17h 50m

£671
Cheapest one-way

DublinChicago

DUB - ORD

DUBORD

Dublin

Sat 22/8

11:30-21:58

1 stop16h 28m

£362

Flights are sorted by cheapest return flights first.

Deals found on 13/7

Showing 1-10 of 20 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 £297). Flying from Ireland to Chicago O'Hare Intl Airport in July is currently the most expensive (average of £458). 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 16 July 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 16 July 2026.

The most flights from IE0 to ORD are scheduled on a Monday (20 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (19 on average).

How often are flights from Ireland to Chicago delayed?

About 14% of weekly flights between Ireland and Chicago have experienced delays in the past year, with the average delay time being 145 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?

Thursday 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.

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 63 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.

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 16 July 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
1,420 reviews
Check prices

Boarding

7.7

Food

6.7

Comfort

7.4

Overall

7.6

Crew

8.2

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Jake,Jun 2026

RNO - SEA

Our checked baggage was not transferred correctly so now we are stuck in Budapest with out essential luggage. We are not able to get much help from FinnAir because their service from Seattle is on periodic.
Finnair
7.6
Good
1,420 reviews
Finnair
7.6
Good
1,420 reviews
Check prices

Boarding

7.7

Food

6.7

Comfort

7.4

Overall

7.6

Crew

8.2

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Jake,Jun 2026

RNO - SEA

Our checked baggage was not transferred correctly so now we are stuck in Budapest with out essential luggage. We are not able to get much help from FinnAir because their service from Seattle is on periodic.
United Airlines
7.4
Good
9,993 reviews
Finnair
7.6
Good
1,420 reviews
Check prices

Boarding

7.7

Food

6.7

Comfort

7.4

Overall

7.6

Crew

8.2

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Jake,Jun 2026

RNO - SEA

Our checked baggage was not transferred correctly so now we are stuck in Budapest with out essential luggage. We are not able to get much help from FinnAir because their service from Seattle is on periodic.
Aer Lingus
7.3
Good
1,668 reviews
Finnair
7.6
Good
1,420 reviews
Check prices

Boarding

7.7

Food

6.7

Comfort

7.4

Overall

7.6

Crew

8.2

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Jake,Jun 2026

RNO - SEA

Our checked baggage was not transferred correctly so now we are stuck in Budapest with out essential luggage. We are not able to get much help from FinnAir because their service from Seattle is on periodic.
Icelandair
7.0
Good
709 reviews
Finnair
7.6
Good
1,420 reviews
Check prices

Boarding

7.7

Food

6.7

Comfort

7.4

Overall

7.6

Crew

8.2

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Jake,Jun 2026

RNO - SEA

Our checked baggage was not transferred correctly so now we are stuck in Budapest with out essential luggage. We are not able to get much help from FinnAir because their service from Seattle is on periodic.
Lufthansa
6.8
Okay
8,137 reviews
Finnair
7.6
Good
1,420 reviews
Check prices

Boarding

7.7

Food

6.7

Comfort

7.4

Overall

7.6

Crew

8.2

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Jake,Jun 2026

RNO - SEA

Our checked baggage was not transferred correctly so now we are stuck in Budapest with out essential luggage. We are not able to get much help from FinnAir because their service from Seattle is on periodic.

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, British Airways, or Scandinavian Airlines 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 Alaska Airlines (86%), Finnair (86%) or Iberia (84%) 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 £1,132 for a flight from Ireland to Chicago O'Hare Intl Airport. The cheapest flight overall is £388 while the most popular route, (Dublin - Chicago O'Hare Intl) is currently priced at £583.

  • 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 £297). Flying from Ireland to Chicago O'Hare Intl Airport in July is currently the most expensive (average of £458). 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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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 16 July 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£297Average£474FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
LufthansaCheapest£331Average£648FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Aer LingusCheapest£344Average£538FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
United AirlinesCheapest£353Average£642FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
FinnairCheapest£457Average£661FlexibilityNo cancel feeOn-time76%
Search Finnair 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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