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, Scandinavian Airlines, 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 £559 for a flight from Ireland to Chicago O'Hare Intl Airport. The cheapest flight overall is £452 while the most popular route, (Dublin - Chicago O'Hare Intl) is currently priced at £540.

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

Consider Alaska Airlines (88%), Finnair (79%) or American Airlines (72%) 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 United Airlines.

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.

£328+ 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 8 October 2026.

Fri 4/1211:30 -

1 stop11h 50m

Mon 7/1218:30 -

1 stop9h 45m

Deal found 4/10£336

Tue 13/1014:15 -

1 stop10h 00m

Mon 14/1218:30 -

1 stop9h 45m

Deal found 5/10£358

Tue 24/1111:30 -

1 stop11h 50m

Sun 29/1118:30 -

1 stop9h 45m

Deal found 6/10£360

Wed 2/1211:30 -

1 stop11h 50m

Sun 6/1218:30 -

1 stop9h 45m

Deal found 5/10£361

Mon 21/1211:30 -

1 stop11h 50m

Wed 30/1218:30 -

1 stop9h 45m

Deal found 4/10£361

Tue 24/1119:05 -

1 stop27h 40m

Mon 30/1119:10 -

2 stops34h 40m

Deal found 7/10£372

Tue 13/1014:15 -

1 stop10h 00m

Sun 13/1218:30 -

1 stop9h 45m

Deal found 5/10£373

Thu 15/1014:15 -

1 stop10h 00m

Sun 13/1218:30 -

1 stop9h 45m

Deal found 4/10£377

Wed 2/1219:05 -

1 stop27h 40m

Sun 6/1219:10 -

1 stop34h 35m

Deal found 7/10£378

Sun 22/1120:05 -

2 stops24h 50m

Tue 1/1217:40 -

2 stops17h 05m

Deal found 6/10£509

Thu 5/1120:05 -

1 stop25h 25m

Mon 9/1117:10 -

1 stop12h 20m

Deal found 7/10£517

Thu 15/1012:30 -

1 stop15h 02m

Mon 19/1018:00 -

1 stop10h 15m

Deal found 7/10£548

Find flight deals from Ireland to O'Hare Intl

Round-trip from	£336
One-way from	£328
Popular in	August
Cheapest in	November
Average price	£571
Good round-trip deal	£552 or less
Good one-way deal	£454 or less

Icelandair
25/1-29/1
2 total stops
21h 35m total
Ireland to Chicago

Search Deals

Delta
5/4-31/12
2 total stops
18h 42m total
Ireland to Chicago

Search Deals

Highest demand for flights based on searches. 11% potential increase in price (£49 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 October 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.

Search Deals

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 5/4

08:55-21:37

2 stops18h 42m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£328

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Mon 28/12

09:55-21:39

1 stop17h 44m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£332

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Thu 24/12

10:45-21:39

1 stop16h 54m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£334

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Sat 3/4

15:00-09:33

1 stop24h 33m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£336

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Tue 3/11

16:55-15:30

1 stop28h 35m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£345

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

£361

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Mon 30/11

16:00-18:45

1 stop32h 45m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£361

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Sat 23/1

11:30-17:20

1 stop11h 50m

Chicago O'Hare Intl

Thu 28/1

18:30-10:15

1 stop9h 45m

£361

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Mon 21/12

09:55-18:29

1 stop14h 34m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£371

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Thu 18/2

10:55-16:45

2 stops35h 50m

Chicago O'Hare Intl

Tue 23/2

19:10-10:00

2 stops32h 50m

£375

Flights are sorted by cheapest return flights first.

Deals found on 7/10

Showing 1-10 of 23 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

SNN-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

SNN-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 £410). Flying from Ireland to Chicago O'Hare Intl Airport in July is currently the most expensive (average of £640). 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 (12 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,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

1,428 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

1,428 reviews

Finnair

7.6

Good

1,428 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Jake,Jun 2026

RNO - SEA

United Airlines

7.4

Good

10,306 reviews

Finnair

7.6

Good

1,428 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Jake,Jun 2026

RNO - SEA

Aer Lingus

7.3

Good

1,818 reviews

Finnair

7.6

Good

1,428 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Jake,Jun 2026

RNO - SEA

JetBlue

7.1

Good

3,044 reviews

Finnair

7.6

Good

1,428 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Jake,Jun 2026

RNO - SEA

Icelandair

6.9

Okay

758 reviews

Finnair

7.6

Good

1,428 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 50m. Fly via Icelandair, Scandinavian Airlines, 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 (88%), Finnair (79%) or American Airlines (72%) 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 £559 for a flight from Ireland to Chicago O'Hare Intl Airport. The cheapest flight overall is £452 while the most popular route, (Dublin - Chicago O'Hare Intl) is currently priced at £540.
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 £410). Flying from Ireland to Chicago O'Hare Intl Airport in July is currently the most expensive (average of £640). 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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Dublin to Midway flights

Top 6 airlines flying from Ireland to O'Hare Intl

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	Cheapest£312	Average£481	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Lufthansa	Cheapest£337	Average£657	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Aer Lingus	Cheapest£380	Average£553	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
JetBlue	Cheapest£458	Average£476	FlexibilityNo cancel fee	On-time62%	Search JetBlue flights
Finnair	Cheapest£464	Average£672	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
United Airlines	Cheapest£487	Average£661	FlexibilityNo cancel fee	On-time69%	Search United Airlines 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 £328

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/4. 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 8 October 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 8 October 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 8 October 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 8 October 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 8 October 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 8 October 2026.

Last-minute flights from Ireland to O'Hare IntlDiscover last-minute flight deals from Ireland to O'Hare Intl. Data last updated 8 October 2026 and is based on user searches.

Discover last-minute flight deals from Ireland to O'Hare Intl. Data last updated 8 October 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 8 October 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 8 October 2026.

Find flight deals from Ireland to O'Hare Intl

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One-way from

Popular in

Cheapest in

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 8 October 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 8 October 2026.

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 (12 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,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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Other flights to O'Hare Intl

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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 8 October 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 8 October 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 8 October 2026.

Last-minute flights from Ireland to O'Hare Intl
Discover last-minute flight deals from Ireland to O'Hare Intl. Data last updated 8 October 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 8 October 2026.