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Cheap flights from Ireland to Chicago O'Hare Intl Airport from £308

DUB — ORD
10 Oct — 17 Oct1
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

Thu 26/1111:30 -
1 stop11h 50m
Sun 29/1118:30 -
1 stop9h 45m
Deal found 5/9£308
Wed 2/1211:30 -
1 stop11h 50m
Sun 6/1218:30 -
1 stop9h 45m
Deal found 5/9£339
Fri 4/1205:10 -
1 stop14h 00m
Fri 11/1212:50 -
1 stop12h 20m
Deal found 6/9£390
Sun 1/1105:10 -
1 stop14h 00m
Sun 8/1118:30 -
Nonstop7h 40m
Deal found 6/9£393
Wed 11/1109:10 -
1 stop16h 55m
Sat 21/1110:15 -
1 stop14h 55m
Deal found 6/9£396
Mon 26/1005:10 -
1 stop20h 55m
Mon 2/1116:20 -
1 stop18h 10m
Deal found 6/9£399
Sat 26/1211:30 -
1 stop18h 18m
Thu 31/1215:20 -
1 stop11h 10m
Deal found 5/9£400
Sat 21/1120:40 -
1 stop24h 50m
Tue 2/217:10 -
1 stop10h 30m
Deal found 6/9£402
Thu 24/1220:40 -
1 stop28h 35m
Sun 3/120:40 -
1 stop14h 15m
Deal found 5/9£403
Fri 4/1211:30 -
Nonstop8h 40m
Fri 11/1215:55 -
Nonstop7h 20m
Deal found 6/9£404

Find flight deals from Ireland to O'Hare Intl

Round-trip from

£308

Popular in

August

Cheapest in

November

Average price

£412

Good round-trip deal

£108 or less

Good one-way deal

£565 or less
Icelandair
  • Icelandair
  • 26/11-29/11
  • 2 total stops
  • 21h 35m total
  • Ireland to Chicago
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Highest demand for flights based on searches. 14% potential increase in price (£61 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (£12 potential savings vs. average return price).
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Average for round-trip flights in September 2026
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Price to beat on a round-trip flight from Ireland to Chicago O'Hare Intl.
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Price to beat on a one-way flight from Ireland to Chicago O'Hare Intl.
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Cheapflights Fare Finder

 
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 Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Wed 2/12

11:30-17:20

1 stop11h 50m

Chicago O'Hare Intl

Sun 6/12

18:30-10:15

1 stop9h 45m

£339

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Sat 7/11

04:15-15:30

1 stop17h 15m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£348

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Sat 7/11

16:55-15:30

1 stop28h 35m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£348
Fastest return journey

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Sat 19/9

05:55-14:15

1 stop14h 20m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£359

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Mon 28/9

05:55-14:30

1 stop14h 35m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£359

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Tue 29/9

11:10-21:37

2 stops16h 27m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£362

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Fri 4/12

09:30-16:42

2 stops13h 12m

Chicago O'Hare Intl

Fri 11/12

15:45-07:30

1 stop9h 45m

£411

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Thu 22/10

08:55-14:15

1 stop11h 20m

Chicago O'Hare Intl

Mon 26/10

19:25-14:30

1 stop14h 05m

£417

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Fri 4/12

08:50-22:57

2 stops20h 07m

Chicago O'Hare Intl

Fri 11/12

14:44-14:10

2 stops17h 26m

£418

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Fri 23/10

08:55-14:15

1 stop11h 20m

Chicago O'Hare Intl

Thu 29/10

11:19-08:05

2 stops15h 46m

£421

Flights are sorted by cheapest return flights first.

Deals found on 7/9

Showing 1-10 of 16 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

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, November is the cheapest month in which you can book a flight from Ireland to Chicago O'Hare Intl Airport (average of £367). Flying from Ireland to Chicago O'Hare Intl Airport in July is currently the most expensive (average of £625). 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?

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

The most flights from IE0 to ORD are scheduled on a Wednesday (13 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (11 on average).

How often are flights from Ireland to Chicago delayed?

About 11% of weekly flights between Ireland and Chicago have experienced delays in the past year, with the average delay time being 154 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 7% 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 53 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

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
1,430 reviews
Check prices

Comfort

7.4

Entertainment

6.9

Crew

8.2

Boarding

7.7

Food

6.7

Overall

7.6

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
1,430 reviews
Finnair
7.6
Good
1,430 reviews
Check prices

Comfort

7.4

Entertainment

6.9

Crew

8.2

Boarding

7.7

Food

6.7

Overall

7.6

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
10,194 reviews
Finnair
7.6
Good
1,430 reviews
Check prices

Comfort

7.4

Entertainment

6.9

Crew

8.2

Boarding

7.7

Food

6.7

Overall

7.6

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
1,755 reviews
Finnair
7.6
Good
1,430 reviews
Check prices

Comfort

7.4

Entertainment

6.9

Crew

8.2

Boarding

7.7

Food

6.7

Overall

7.6

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.
JetBlue
7.1
Good
3,041 reviews
Finnair
7.6
Good
1,430 reviews
Check prices

Comfort

7.4

Entertainment

6.9

Crew

8.2

Boarding

7.7

Food

6.7

Overall

7.6

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
8,213 reviews
Finnair
7.6
Good
1,430 reviews
Check prices

Comfort

7.4

Entertainment

6.9

Crew

8.2

Boarding

7.7

Food

6.7

Overall

7.6

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

  • 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 11h 50m. Fly via Icelandair, United Airlines, or Delta 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 (92%), Finnair (87%) or American Airlines (81%) 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 £1,252 for a flight from Ireland to Chicago O'Hare Intl Airport. The cheapest flight overall is £105 while the most popular route, (Dublin - Chicago O'Hare Intl) is currently priced at £339.

  • 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, November is the cheapest month in which you can book a flight from Ireland to Chicago O'Hare Intl Airport (average of £367). Flying from Ireland to Chicago O'Hare Intl Airport in July is currently the most expensive (average of £625). 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

Top 5 airlines flying from Ireland to O'Hare Intl

AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£329Average£679FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Aer LingusCheapest£342Average£529FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
United AirlinesCheapest£344Average£591FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
JetBlueCheapest£447Average£465FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
FinnairCheapest£453Average£656FlexibilityNo cancel feeOn-time76%
Search Finnair flights

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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?

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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.

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