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 40m. Fly via Icelandair, Finnair, or British Airways 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.

In terms of precipitation, rainfall in Chicago O'Hare Intl Airport ranges from 43.0 - 125.0 inches per month. August is typically the wettest month, when rainfall can reach 125.0 mm. January is typically the driest time to visit Chicago O'Hare Intl Airport when rainfall is around 43.0 mm.

If weather is an important factor for your trip to Chicago O'Hare Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).

What are the cheapest flights from Ireland to Chicago O'Hare Intl Airport?

On average you can expect to pay £1,062 for a flight from Ireland to Chicago O'Hare Intl Airport. The cheapest flight overall is £404 while the most popular route, (Dublin - Chicago O'Hare Intl) is currently priced at £543.

What are the most reliable airlines from Ireland to Chicago O'Hare Intl Airport?

Consider Alaska Airlines (93%), Finnair (92%) or American Airlines (82%) when booking your flight. These represent the most reliable airlines when flying from Ireland to Chicago O'Hare Intl Airport.

What are the most popular airlines that fly from Ireland to Chicago O'Hare Intl Airport?

Before booking your flight from Ireland to Chicago O'Hare Intl Airport check out the most popular airlines for this route: Aer Lingus, Finnair or JetBlue.

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.

£342+ Cheap Flights from Ireland to Chicago O'Hare Intl Airport

Cheap flight deals from Ireland to O'Hare Intl

Enter your travel dates to find the best prices.

Cheapest

Best

Direct

Last-minute

One-way

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 26 August 2026.

Wed 2/1211:30 -

1 stop11h 50m

Mon 7/1218:30 -

1 stop9h 45m

Deal found 25/8£342

Thu 1/1014:15 -

1 stop10h 00m

Sun 4/1019:25 -

1 stop11h 50m

Deal found 24/8£356

Wed 11/1111:30 -

1 stop11h 50m

Fri 27/1118:30 -

1 stop9h 45m

Deal found 24/8£374

Thu 8/1009:30 -

1 stop15h 55m

Thu 15/1012:10 -

1 stop15h 35m

Deal found 24/8£392

Sat 26/1213:05 -

1 stop11h 40m

Thu 31/1217:10 -

1 stop10h 45m

Deal found 25/8£394

Fri 11/912:15 -

1 stop15h 10m

Tue 22/919:25 -

1 stop9h 40m

Deal found 25/8£394

Wed 2/912:15 -

1 stop12h 00m

Mon 7/922:25 -

1 stop30h 40m

Deal found 25/8£398

Fri 16/1009:30 -

1 stop15h 55m

Mon 19/1022:30 -

1 stop14h 10m

Deal found 24/8£402

Mon 31/809:30 -

Nonstop8h 00m

Sun 6/922:20 -

Nonstop7h 30m

Deal found 24/8£403

Tue 13/1011:45 -

1 stop14h 06m

Tue 20/1017:00 -

1 stop10h 40m

Deal found 24/8£403

Sat 26/1213:05 -

1 stop11h 40m

Wed 30/1217:10 -

1 stop10h 45m

Deal found 25/8£405

Tue 27/1011:30 -

Nonstop8h 40m

Sat 31/1016:55 -

Nonstop7h 20m

Deal found 25/8£406

Find flight deals from Ireland to O'Hare Intl

Round-trip from	£342
Popular in	August
Cheapest in	November
Average price	£633
Good round-trip deal	£486 or less
Good one-way deal	£500 or less

Icelandair
2/12-7/12
2 total stops
21h 35m total
Ireland to Chicago

Search Deals

Highest demand for flights based on searches. 16% potential increase in price (£70 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£11 potential savings vs. average return price).

Search Deals

Average for round-trip flights in August 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.

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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

Mon 14/9

11:10-22:32

2 stops17h 22m

Chicago O'Hare Intl

Thu 24/9

13:55-09:15

1 stop13h 20m

£417

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Thu 3/12

10:55-16:45

2 stops35h 50m

Chicago O'Hare Intl

Sun 6/12

19:15-11:45

1 stop34h 30m

£434

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Tue 29/9

11:40-16:10

2 stops34h 30m

Chicago O'Hare Intl

Sat 3/10

19:15-18:25

2 stops17h 10m

£491

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Sat 12/9

14:15-18:15

1 stop10h 00m

Chicago O'Hare Intl

Mon 21/9

19:25-13:15

1 stop11h 50m

£502

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Fri 25/9

12:15-18:15

1 stop12h 00m

Chicago O'Hare Intl

Tue 29/9

19:25-11:05

1 stop9h 40m

£502

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Sun 6/9

06:30-12:30

1 stop12h 00m

Chicago O'Hare Intl

Tue 22/9

13:35-10:15

2 stops14h 40m

£535

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Thu 3/12

09:00-15:38

1 stop12h 38m

Chicago O'Hare Intl

Sun 6/12

18:30-08:10

Nonstop7h 40m

£539

Fastest return journey

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Wed 20/1

10:40-13:20

Nonstop8h 40m

Chicago O'Hare Intl

Tue 26/1

18:30-08:10

Nonstop7h 40m

£543

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Wed 2/12

10:40-13:20

Nonstop8h 40m

Chicago O'Hare Intl

Sun 6/12

18:30-08:10

Nonstop7h 40m

£543

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Wed 20/1

10:40-13:20

Nonstop8h 40m

Chicago O'Hare Intl

Sat 30/1

18:30-08:10

Nonstop7h 40m

£543

Flights are sorted by cheapest return flights first.

Deals found on 21/8

Showing 1-10 of 20 resultsSorted by cheapest first

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.

DUB-ORD

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

IE0-ORD

DUB-ORD

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 £350). Flying from Ireland to Chicago O'Hare Intl Airport in July is currently the most expensive (average of £622). 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 (18 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (13 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 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

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

1,433 reviews

Check prices

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

1,433 reviews

Finnair

7.6

Good

1,433 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Jake,Jun 2026

RNO - SEA

United Airlines

7.4

Good

10,123 reviews

Finnair

7.6

Good

1,433 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Jake,Jun 2026

RNO - SEA

Aer Lingus

7.3

Good

1,729 reviews

Finnair

7.6

Good

1,433 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Jake,Jun 2026

RNO - SEA

JetBlue

7.1

Good

3,036 reviews

Finnair

7.6

Good

1,433 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Jake,Jun 2026

RNO - SEA

Icelandair

6.9

Okay

738 reviews

Finnair

7.6

Good

1,433 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Jake,Jun 2026

RNO - SEA

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 40m. Fly via Icelandair, Finnair, or British Airways 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 (93%), Finnair (92%) or American Airlines (82%) 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 £1,062 for a flight from Ireland to Chicago O'Hare Intl Airport. The cheapest flight overall is £404 while the most popular route, (Dublin - Chicago O'Hare Intl) is currently priced at £543.
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 £350). Flying from Ireland to Chicago O'Hare Intl Airport in July is currently the most expensive (average of £622). 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.

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Heathrow to Midway flights

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Amsterdam to O'Hare Intl flights

Doncaster to O'Hare Intl flights

Top 6 airlines flying from Ireland to O'Hare Intl

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	Cheapest£293	Average£468	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Lufthansa	Cheapest£327	Average£674	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Aer Lingus	Cheapest£340	Average£534	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
United Airlines	Cheapest£342	Average£556	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
JetBlue	Cheapest£444	Average£462	FlexibilityNo cancel fee	On-time62%	Search JetBlue flights
Finnair	Cheapest£450	Average£652	FlexibilityNo cancel fee	On-time76%	Search Finnair flights

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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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Cheap flights from Ireland to Chicago O'Hare Intl Airport from £342

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/12. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Ireland to O'Hare Intl

Cheapest flights from Ireland to O'Hare IntlExplore 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 26 August 2026.

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 26 August 2026.

Best flights from Ireland to O'Hare IntlDiscover carefully curated flight deals from Ireland to O'Hare Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 26 August 2026.

Discover carefully curated flight deals from Ireland to O'Hare Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 26 August 2026.

Direct flights from Ireland to O'Hare IntlExplore direct flight options from Ireland to O'Hare Intl based on user searches, and compare prices and availability for your desired travel dates. Data last updated 26 August 2026.

Explore direct flight options from Ireland to O'Hare Intl based on user searches, and compare prices and availability for your desired travel dates. Data last updated 26 August 2026.

Last-minute flights from Ireland to O'Hare IntlDiscover last-minute flight deals from Ireland to O'Hare Intl. Data last updated 26 August 2026 and is based on user searches.

Discover last-minute flight deals from Ireland to O'Hare Intl. Data last updated 26 August 2026 and is based on user searches.

One-way flights from Ireland to O'Hare IntlSearch for one-way flight options from Ireland to O'Hare Intl. Find affordable one-way fares based on user searches. Data last updated 26 August 2026.

Search for one-way flight options from Ireland to O'Hare Intl. Find affordable one-way fares based on user searches. Data last updated 26 August 2026.

Find flight deals from Ireland to O'Hare Intl

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Average price

Good round-trip deal

Good one-way deal

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Use the filters below to find and compare flights from Ireland to Chicago O'Hare Intl Airport that are best for you.

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.

Cheapflights Insights

What is the cheapest month to book a flight from Ireland to Chicago O'Hare Intl Airport?

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 26 August 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 26 August 2026.

The most flights from IE0 to ORD are scheduled on a Monday (18 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (13 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 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

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.

Related info for your journey

How long is the flight from Ireland to Chicago O'Hare Intl Airport?

What are the most reliable airlines from Ireland to Chicago O'Hare Intl Airport?

What are the cheapest flights from Ireland to Chicago O'Hare Intl Airport?

Can I find deals for flights from Ireland to O'Hare Intl that include hotel bookings?

How can I find direct flights from Ireland to O'Hare Intl?

Can I find deals for business class flights from Ireland to O'Hare Intl?

What is the cheapest month to book a flight from Ireland to Chicago O'Hare Intl Airport?

Travelling to a place near Chicago O'Hare Intl Airport?

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Complete your trip

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Search flights from Ireland to O'Hare Intl by cabin class

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Other flights to O'Hare Intl

Explore flights to O'Hare Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 26 August 2026.

Ireland and O'Hare Intl flights

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Top 6 airlines flying from Ireland to O'Hare Intl

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Why should you use Cheapflights to find cheap flight tickets from Ireland to O'Hare Intl?

Can Cheapflights find flights from Ireland to O'Hare Intl with no change fees?

Can Cheapflights notify me if prices for flights from Ireland to O'Hare Intl become cheaper?

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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 26 August 2026.

Best flights from Ireland to O'Hare Intl
Discover carefully curated flight deals from Ireland to O'Hare Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 26 August 2026.

Direct flights from Ireland to O'Hare Intl
Explore direct flight options from Ireland to O'Hare Intl based on user searches, and compare prices and availability for your desired travel dates. Data last updated 26 August 2026.

Last-minute flights from Ireland to O'Hare Intl
Discover last-minute flight deals from Ireland to O'Hare Intl. Data last updated 26 August 2026 and is based on user searches.

One-way flights from Ireland to O'Hare Intl
Search for one-way flight options from Ireland to O'Hare Intl. Find affordable one-way fares based on user searches. Data last updated 26 August 2026.