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

DUB — ORD
5 Dec — 12 Dec1
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

Sun 6/1219:05 -
1 stop27h 40m
Thu 10/1219:10 -
1 stop17h 10m
Deal found 4/11£436
Sat 21/1119:05 -
1 stop27h 40m
Mon 23/1119:10 -
1 stop17h 10m
Deal found 4/11£441
Sat 5/1211:30 -
1 stop11h 50m
Fri 25/1218:30 -
1 stop9h 45m
Deal found 4/11£448
Thu 19/1111:30 -
1 stop11h 50m
Mon 23/1118:30 -
1 stop9h 45m
Deal found 4/11£456
Sun 6/1219:05 -
1 stop27h 40m
Tue 29/1219:10 -
1 stop34h 35m
Deal found 4/11£462
Wed 16/1211:30 -
1 stop11h 50m
Mon 4/118:30 -
1 stop9h 45m
Deal found 31/10£465
Sat 21/1119:05 -
1 stop27h 40m
Sun 22/1119:10 -
1 stop34h 35m
Deal found 4/11£466
Sat 21/1110:05 -
2 stops36h 40m
Mon 30/1119:10 -
1 stop17h 10m
Deal found 1/11£468
Tue 24/1119:05 -
1 stop27h 40m
Sun 29/1119:10 -
2 stops33h 35m
Deal found 2/11£469
Tue 24/1111:30 -
2 stops35h 15m
Mon 30/1119:10 -
1 stop17h 10m
Deal found 3/11£470
Fri 4/1220:05 -
1 stop23h 40m
Mon 14/1220:30 -
1 stop16h 55m
Deal found 3/11£494
Thu 12/1120:05 -
1 stop25h 25m
Mon 16/1120:30 -
1 stop16h 55m
Deal found 2/11£495

Find flight deals from Ireland to O'Hare Intl

Round-trip from

£401

One-way from

£312

Popular in

August

Cheapest in

November

Average price

£356

Good round-trip deal

£537 or less

Good one-way deal

£444 or less
Icelandair
  • Icelandair
  • 1/2-8/2
  • 2 total stops
  • 21h 35m total
  • Ireland to Chicago
11/12-31/12
  • 11/12-31/12
  • 3 total stops
  • 47h 35m total
  • Ireland to Chicago
Highest demand for flights based on searches. 11% potential increase in price (£48 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease (£11 potential savings vs. average return price).
Average for round-trip flights in November 2026
Price to beat on a round-trip flight from Ireland to Chicago O'Hare Intl.
Price to beat on a one-way flight from Ireland to Chicago O'Hare Intl.

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

Sat 9/1

08:50-19:16

2 stops16h 26m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£333

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Sat 9/1

08:50-19:16

2 stops16h 26m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£333

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Thu 19/11

04:25-15:30

1 stop17h 05m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£337

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Sat 21/11

16:55-15:30

1 stop28h 35m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£337
Fastest return journey

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Mon 7/12

15:50-18:20

Nonstop8h 30m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£404

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Sun 10/1

16:40-19:15

Nonstop8h 35m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£410

ShannonChicago

SNN Shannon - ORD Chicago O'Hare Intl

SNNORD

Shannon

Tue 22/12

07:50-23:32

2 stops21h 42m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£430

ShannonChicago

SNN Shannon - ORD Chicago O'Hare Intl

SNNORD

Shannon

Fri 26/3

07:50-14:31

2 stops35h 41m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£464

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Sun 29/11

10:40-18:20

1 stop37h 40m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£469

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Sat 9/1

04:15-13:49

2 stops39h 34m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£476

Flights are sorted by cheapest return flights first.

Deals found on 2/11

Showing 1-10 of 32 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

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 £420). Flying from Ireland to Chicago O'Hare Intl Airport in July is currently the most expensive (average of £629). 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 Monday (13 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (11 on average).

How often are flights from Ireland to Chicago delayed?

About 10% of weekly flights between Ireland and Chicago have experienced delays in the past year, with the average delay time being 165 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 Saturday 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 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,Aer Lingus, andUnited Airlines 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.

Comfort

7.4

Overall

7.6

Crew

8.2

Food

6.7

Entertainment

6.9

Boarding

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.

Comfort

7.4

Overall

7.6

Crew

8.2

Food

6.7

Entertainment

6.9

Boarding

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.

Comfort

7.4

Overall

7.6

Crew

8.2

Food

6.7

Entertainment

6.9

Boarding

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.

Comfort

7.4

Overall

7.6

Crew

8.2

Food

6.7

Entertainment

6.9

Boarding

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.

Comfort

7.4

Overall

7.6

Crew

8.2

Food

6.7

Entertainment

6.9

Boarding

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.

Comfort

7.4

Overall

7.6

Crew

8.2

Food

6.7

Entertainment

6.9

Boarding

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 16h 58m. Fly via Delta, British Airways, or United 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 Finnair (71%), American Airlines (68%) or Aer Lingus (68%) 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 £947 for a flight from Ireland to Chicago O'Hare Intl Airport. The cheapest flight overall is £386 while the most popular route, (Dublin - Chicago O'Hare Intl) is currently priced at £477.

  • 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 £420). Flying from Ireland to Chicago O'Hare Intl Airport in July is currently the most expensive (average of £629). 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
IcelandairCheapest£310Average£474FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Aer LingusCheapest£387Average£537FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
JetBlueCheapest£450Average£467FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
FinnairCheapest£456Average£660FlexibilityNo cancel feeOn-time76%
Search Finnair flights
United AirlinesCheapest£520Average£649FlexibilityNo cancel feeOn-time69%
Search United Airlines 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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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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