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Cheap flights from Ireland to Chicago O'Hare Intl Airport from £353

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/2. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — ORD
5 Dec — 12 Dec1
1 adult
1 adult, Economy, 0 bags

Find 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 November 2025.

Sat 22/1110:10DUB - ORD
1 stop12h 35mScandinavian Airlines
Wed 26/1119:20ORD - DUB
1 stop17h 00mScandinavian Airlines
Deal found 3/11£358
Sun 23/1105:55DUB - ORD
1 stop14h 25mKLM
Sat 29/1107:00ORD - DUB
1 stop19h 45mKLM
Deal found 5/11£360
Sun 23/1108:50DUB - ORD
1 stop11h 30mDelta
Sat 29/1111:03ORD - DUB
1 stop14h 42mDelta
Deal found 3/11£361
Wed 3/1208:50DUB - ORD
1 stop11h 30mDelta
Wed 10/1206:45ORD - DUB
2 stops19h 20mDelta
Deal found 5/11£361
Mon 10/1108:50DUB - ORD
2 stops18h 37mDelta
Tue 18/1110:35ORD - DUB
2 stops15h 15mDelta
Deal found 3/11£362
Fri 14/1105:55DUB - ORD
2 stops18h 18mDelta
Sun 23/1115:50ORD - DUB
1 stop11h 30mDelta
Deal found 5/11£364
Sun 23/1105:55DUB - ORD
2 stops16h 57mDelta
Thu 18/1210:35ORD - DUB
1 stop16h 45mDelta
Deal found 3/11£364
Sat 15/1108:55DUB - ORD
1 stop12h 15mDelta
Mon 24/1117:08ORD - DUB
2 stops13h 32mDelta
Deal found 5/11£366
Wed 19/1105:55DUB - ORD
1 stop14h 25mKLM
Tue 25/1117:08ORD - DUB
2 stops13h 32mKLM
Deal found 3/11£367
Thu 13/1108:45DUB - ORD
1 stop12h 25mDelta
Wed 19/1106:45ORD - DUB
2 stops19h 20mDelta
Deal found 5/11£368

Cheap 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 November 2025.

Round-trip from

£349

Popular in

July

Cheapest in

September

Average price

£392

Good round-trip deal

£429 or less

Good one-way deal

£507 or less
Lufthansa
  • Lufthansa
  • 12/2-26/2
  • 1 total stop
  • 21h 45m total
  • Ireland to Chicago
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£61 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£7 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
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 November 2025.
Use the filters below to find and compare flights from Ireland to Chicago O'Hare Intl Airport that are best for you.

Fly from

Ireland

Fly to

O'Hare Intl

Route

Depart

Return

Price

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 5/2

08:50-15:25

1 stop12h 35m

Chicago O'Hare Intl

Fri 13/2

15:28-15:05

2 stops17h 37m

£353

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 5/2

08:50-23:27

2 stops20h 37m

Chicago O'Hare Intl

Tue 17/2

20:45-17:00

1 stop14h 15m

£357

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 6/3

18:55-16:45

2 stops27h 50m

Chicago O'Hare Intl

Fri 13/3

20:10-11:20

2 stops34h 10m

£357

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 27/3

11:30-20:07

1 stop13h 37m

Chicago O'Hare Intl

Tue 31/3

21:15-14:45

1 stop11h 30m

£357

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 12/2

11:30-16:45

2 stops35h 15m

Chicago O'Hare Intl

Thu 26/2

19:20-18:10

2 stops16h 50m

£358

DublinChicago

DUB - ORD

DUBORD

Dublin

Mon 8/12

05:55-14:20

1 stop14h 25m

Chicago O'Hare Intl

Tue 16/12

08:50-07:45

1 stop16h 55m

£360

DublinChicago

DUB - ORD

DUBORD

Dublin

Sat 7/2

10:55-23:44

2 stops18h 49m

Chicago O'Hare Intl

Fri 13/2

20:45-17:00

1 stop14h 15m

£361

DublinChicago

DUB - ORD

DUBORD

Dublin

Tue 31/3

06:00-18:46

2 stops18h 46m

Chicago O'Hare Intl

Tue 7/4

17:10-15:00

1 stop15h 50m

£364

DublinChicago

DUB - ORD

DUBORD

Dublin

Mon 30/3

10:30-18:15

1 stop13h 45m

£366

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 7/1

11:30-17:20

1 stop11h 50m

£375

Flights are sorted by cheapest return flights first.

Deals found on 5/11

Showing 1-10 of 16 results
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, February is the cheapest month in which you can book a flight from Ireland to Chicago O'Hare Intl Airport (average of £301). Flying from Ireland to Chicago O'Hare Intl Airport in July is currently the most expensive (average of £478). 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 November 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 21% on flights from Ireland to Chicago O'Hare Intl Airport by exploring options for tickets in the afternoon.

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 November 2025.

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

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 November 2025.
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
1,335 reviews
Check prices

Entertainment

6.9

Food

6.7

Crew

8.1

Overall

7.6

Comfort

7.4

Boarding

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Finnair
7.6
Good
1,335 reviews
Finnair
7.6
Good
1,335 reviews
Check prices

Entertainment

6.9

Food

6.7

Crew

8.1

Overall

7.6

Comfort

7.4

Boarding

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
United Airlines
7.4
Good
9,000 reviews
Finnair
7.6
Good
1,335 reviews
Check prices

Entertainment

6.9

Food

6.7

Crew

8.1

Overall

7.6

Comfort

7.4

Boarding

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Aer Lingus
7.2
Good
1,365 reviews
Finnair
7.6
Good
1,335 reviews
Check prices

Entertainment

6.9

Food

6.7

Crew

8.1

Overall

7.6

Comfort

7.4

Boarding

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Icelandair
7.1
Good
571 reviews
Finnair
7.6
Good
1,335 reviews
Check prices

Entertainment

6.9

Food

6.7

Crew

8.1

Overall

7.6

Comfort

7.4

Boarding

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
British Airways
6.7
Okay
7,495 reviews
Finnair
7.6
Good
1,335 reviews
Check prices

Entertainment

6.9

Food

6.7

Crew

8.1

Overall

7.6

Comfort

7.4

Boarding

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

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 12h 35m. Fly via 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 Air Canada (86%), Austrian Airlines (75%) or Brussels Airlines (75%) 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 £1,008 for a flight from Ireland to Chicago O'Hare Intl Airport. The cheapest flight overall is £344 while the most popular route, (Dublin - Chicago O'Hare Intl) is currently priced at £320.

  • 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, February is the cheapest month in which you can book a flight from Ireland to Chicago O'Hare Intl Airport (average of £301). Flying from Ireland to Chicago O'Hare Intl Airport in July is currently the most expensive (average of £478). 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
Downers Grove
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
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London City to O'Hare Intl flights
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Luton to O'Hare Intl flights
Gatwick to Midway flights
Bruxelles-National to O'Hare Intl flights
Manchester to O'Hare Intl flights
Istanbul to O'Hare Intl flights
Manchester to Midway flights
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Belfast City to O'Hare Intl flights
Leeds to Midway flights
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Southampton to O'Hare Intl flights
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Dublin to Midway flights
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Newcastle upon Tyne to Midway flights
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Inverness to O'Hare Intl flights
Prague to O'Hare Intl flights
Cardiff to Midway flights
Southampton to Midway flights
Barcelona-El Prat to O'Hare Intl flights
Newquay to O'Hare Intl flights
Darlington to Midway flights
Darlington to O'Hare Intl flights
Vienna to O'Hare Intl flights
Frederic Chopin to O'Hare Intl flights

Top 6 airlines flying from Ireland to O'Hare Intl

Discover the top 6 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 November 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£248Average£369FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
British AirwaysCheapest£308Average£492FlexibilityNo cancel feeOn-time70%
Search British Airways flights
FinnairCheapest£325Average£564FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Aer LingusCheapest£353Average£494FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
United AirlinesCheapest£365Average£641FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapest£467Average£507FlexibilityNo 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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