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Cheap flights from Ireland to Chicago O'Hare Intl Airport from £329

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 10/1. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — ORD
4 jan — 11 jan1
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 dezembro 2025.

qua 10/1211:30DUB - ORD
1 stop12h 09mMultiple Airlines
sáb 27/1216:51ORD - DUB
1 stop9h 49mMultiple Airlines
Deal found 3/12£445
dom 14/1211:30DUB - ORD
1 stop15h 04mMultiple Airlines
ter 23/1214:50ORD - DUB
1 stop11h 50mMultiple Airlines
Deal found 4/12£447
sex 26/1211:30DUB - ORD
1 stop12h 00mMultiple Airlines
qui 1/113:15ORD - DUB
1 stop11h 55mMultiple Airlines
Deal found 4/12£476
qua 10/1209:00DUB - ORD
1 stop13h 52mUnited Airlines
ter 16/1214:24ORD - DUB
1 stop11h 06mUnited Airlines
Deal found 3/12£487
dom 14/1208:45DUB - ORD
2 stops19h 02mDelta
ter 23/1210:05ORD - DUB
1 stop15h 40mDelta
Deal found 4/12£490
dom 14/1210:40DUB - ORD
Nonstop8h 50mUnited Airlines
ter 23/1218:35ORD - DUB
Nonstop7h 35mUnited Airlines
Deal found 4/12£493
ter 23/1217:15DUB - ORD
1 stop27h 05mKLM
sáb 3/116:25ORD - DUB
1 stop17h 55mKLM
Deal found 3/12£501
ter 23/1211:30DUB - ORD
2 stops59h 15mScandinavian Airlines
sáb 3/119:20ORD - DUB
2 stops34h 25mScandinavian Airlines
Deal found 3/12£501
sex 26/1208:50DUB - ORD
2 stops17h 46mDelta
qui 1/106:35ORD - DUB
1 stop19h 10mDelta
Deal found 4/12£507

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 dezembro 2025.

Round-trip from

£350

One-way from

£329

Popular in

July

Cheapest in

September

Average price

£389

Good round-trip deal

£362 or less

Good one-way deal

£377 or less
Scandinavian Airlines
  • Scandinavian Airlines
  • 18/1-25/1
  • 3 total stops
  • 46h 20m total
  • Ireland to Chicago
Search Deals
TAP AIR PORTUGAL
  • TAP AIR PORTUGAL
  • 10/1
  • 1 total stop
  • 27h 50m total
  • Ireland to Chicago
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£58 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 December 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 dezembro 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

dom 1/3

10:10-16:45

1 stop12h 35m

Chicago O'Hare Intl

qua 11/3

20:20-10:45

2 stops33h 25m

£361

DublinChicago

DUB - ORD

DUBORD

Dublin

dom 8/2

05:10-15:20

1 stop16h 10m

Chicago O'Hare Intl

sáb 14/2

18:35-08:10

Nonstop7h 35m

£388

DublinChicago

DUB - ORD

DUBORD

Dublin

seg 9/2

05:10-15:20

1 stop16h 10m

Chicago O'Hare Intl

seg 16/2

18:35-08:10

Nonstop7h 35m

£388

DublinChicago

DUB - ORD

DUBORD

Dublin

seg 9/2

05:10-15:20

1 stop16h 10m

Chicago O'Hare Intl

dom 15/2

18:35-08:10

Nonstop7h 35m

£388

DublinChicago

DUB - ORD

DUBORD

Dublin

dom 8/2

05:10-15:20

1 stop16h 10m

Chicago O'Hare Intl

seg 16/2

18:35-08:10

Nonstop7h 35m

£388

DublinChicago

DUB - ORD

DUBORD

Dublin

sáb 7/2

05:10-13:25

1 stop14h 15m

Chicago O'Hare Intl

dom 15/2

18:35-08:10

Nonstop7h 35m

£389

DublinChicago

DUB - ORD

DUBORD

Dublin

sáb 24/1

09:00-17:48

1 stop14h 48m

Chicago O'Hare Intl

seg 26/1

18:35-08:10

Nonstop7h 35m

£400

DublinChicago

DUB - ORD

DUBORD

Dublin

sáb 17/1

09:00-18:55

2 stops15h 55m

Chicago O'Hare Intl

sáb 24/1

11:15-07:30

2 stops14h 15m

£400

DublinChicago

DUB - ORD

DUBORD

Dublin

ter 31/3

09:50-15:10

1 stop11h 20m

Chicago O'Hare Intl

ter 7/4

20:15-09:45

Nonstop7h 30m

£402

DublinChicago

DUB - ORD

DUBORD

Dublin

qua 22/4

09:50-15:10

1 stop11h 20m

Chicago O'Hare Intl

dom 26/4

20:15-09:45

Nonstop7h 30m

£402

Flights are sorted by cheapest return flights first.

Deals found on 4/12

Showing 1-10 of 20 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 £292). Flying from Ireland to Chicago O'Hare Intl Airport in July is currently the most expensive (average of £466). 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 dezembro 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 dezembro 2025.

The most flights from IE0 to ORD are scheduled on a Wednesday (13 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (9 on average).

How often are flights from Ireland to Chicago delayed?

About 12% of weekly flights between Ireland and Chicago have experienced delays in the past year, with the average delay time being 140 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.

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 dezembro 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
1,334 reviews
Check prices

Comfort

7.4

Overall

7.6

Boarding

7.6

Crew

8.1

Food

6.7

Entertainment

6.9

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
1,334 reviews
Finnair
7.6
Good
1,334 reviews
Check prices

Comfort

7.4

Overall

7.6

Boarding

7.6

Crew

8.1

Food

6.7

Entertainment

6.9

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
9,065 reviews
Finnair
7.6
Good
1,334 reviews
Check prices

Comfort

7.4

Overall

7.6

Boarding

7.6

Crew

8.1

Food

6.7

Entertainment

6.9

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
1,384 reviews
Finnair
7.6
Good
1,334 reviews
Check prices

Comfort

7.4

Overall

7.6

Boarding

7.6

Crew

8.1

Food

6.7

Entertainment

6.9

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
7.0
Good
584 reviews
Finnair
7.6
Good
1,334 reviews
Check prices

Comfort

7.4

Overall

7.6

Boarding

7.6

Crew

8.1

Food

6.7

Entertainment

6.9

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
7,562 reviews
Finnair
7.6
Good
1,334 reviews
Check prices

Comfort

7.4

Overall

7.6

Boarding

7.6

Crew

8.1

Food

6.7

Entertainment

6.9

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 Scandinavian Airlines or Lufthansa 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 (80%), Finnair (80%) or Iberia (79%) 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 £888 for a flight from Ireland to Chicago O'Hare Intl Airport. The cheapest flight overall is £348 while the most popular route, (Dublin - Chicago O'Hare Intl) is currently priced at £308.

  • 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 £292). Flying from Ireland to Chicago O'Hare Intl Airport in July is currently the most expensive (average of £466). 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
Gatwick to O'Hare Intl flights
London City to O'Hare Intl flights
Heathrow to Midway flights
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Bruxelles-National to O'Hare Intl flights
Gatwick to Midway flights
Manchester to O'Hare Intl flights
Edinburgh to O'Hare Intl flights
Birmingham to O'Hare Intl flights
Manchester to Midway flights
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Belfast Intl to O'Hare Intl flights
London City to Midway flights
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Belfast City to O'Hare Intl flights
Glasgow Intl to O'Hare Intl flights
Southend to O'Hare Intl flights
Southampton to O'Hare Intl flights
Bristol to O'Hare Intl flights
Glasgow Intl to Midway flights
Newcastle upon Tyne to Midway flights
Leeds to Midway flights
Cardiff to O'Hare Intl flights
Newquay to O'Hare Intl flights
Cardiff to Midway flights
Grimsby to O'Hare Intl flights
Darlington to O'Hare Intl flights
Liverpool to O'Hare Intl flights
Inverness to O'Hare Intl flights
Exeter to O'Hare Intl flights
Bristol to Midway flights
Southampton to Midway flights
Prague to O'Hare Intl flights
Vienna to O'Hare Intl flights
Frederic Chopin to O'Hare Intl flights
Madrid to O'Hare Intl flights
Krakow 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 dezembro 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£242Average£352FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
British AirwaysCheapest£301Average£438FlexibilityNo cancel feeOn-time70%
Search British Airways flights
FinnairCheapest£317Average£538FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Aer LingusCheapest£344Average£483FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
United AirlinesCheapest£356Average£632FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapest£456Average£495FlexibilityNo 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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