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 14h 25m. Fly via Delta to get the fastest option. The distance between Ireland and Chicago O'Hare Intl Airport is about 3661 mi.

What are the cheapest airlines to fly from Ireland to Chicago O'Hare Intl Airport one-way?

For one-way options, check prices for United Airlines. According to our data, you can fly for as low as £377. Users have also found prices from £394 and £398 on JetBlue and British Airways, respectively.

What is the cheapest day to fly from Ireland to Chicago O'Hare Intl Airport?

Travellers seeking maximum savings on their Ireland to Chicago O'Hare Intl Airport flight should consider departing on Tuesday mornings when fares are most often at their lowest. Sunday at midday flights should be avoided if possible as fares are typically the most expensive at this time.

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 £1,021 for a flight from Ireland to Chicago O'Hare Intl Airport. The cheapest flight overall is £302 while the most popular route, (Dublin - Chicago O'Hare Intl) is currently priced at £277.

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

Consider Iberia (85%), American Airlines (58%) or Aer Lingus (58%) 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: American Airlines, Finnair or British Airways.

What is the cheapest day to fly round-trip from Ireland to Chicago O'Hare Intl Airport?

Users have found that flying from Ireland to Chicago O'Hare Intl Airport on a Sunday typically leans towards higher prices. However, this doesn’t mean you still can’t find a deal. Flexibility with other aspects of your flight can still land a great price for your trip.

How far in advance should I book a flight from Ireland to Chicago O'Hare Intl Airport?

Users have found that booking a flight from Ireland to Chicago O'Hare Intl Airport at least 56 days early can save you up to 34% on average compared to booking a flight this week. If booking 56 days before your flight isn’t an option for you, users have found flights from Ireland to Chicago O'Hare Intl Airport for as little as £376 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as £435 for flights departing within the next 3 days.

What is the cheapest month to fly from Ireland to Chicago O'Hare Intl Airport?

Flights from Ireland to Chicago O'Hare Intl Airport lean towards being more expensive in July. Prices are generally better when you fly from Ireland to Chicago O'Hare Intl Airport in January, with the cheapest ticket starting at £292.

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.

£341+ Cheap Flights from Ireland to Chicago O'Hare Intl Airport

Cheap flight deals from Ireland to O'Hare Intl

Round-trip from	£341
Popular in	July
Cheapest in	January
Average price	£507
Good round-trip deal	£442 or less
Good one-way deal	£406 or less

Air France
29/10-3/11
2 total stops
27h 55m total
Ireland to Chicago

Search Deals

Highest demand for flights based on searches. 14% potential increase in price (£55 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 August 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

Find flight deals from Ireland to O'Hare Intl

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 29 August 2025.

Wed 29/1008:50DUB - ORD

1 stop11h 30mDelta

Tue 4/1117:20ORD - DUB

1 stop16h 25mDelta

Deal found 27/8£341

Sat 13/909:20DUB - ORD

1 stop30h 31mUnited Airlines

Tue 30/920:20ORD - DUB

Nonstop7h 25mUnited Airlines

Deal found 28/8£342

Thu 18/914:15DUB - ORD

1 stop13h 00mIcelandair

Sun 28/919:25ORD - DUB

1 stop11h 50mIcelandair

Deal found 26/8£343

Wed 17/912:15DUB - ORD

1 stop12h 00mIcelandair

Fri 26/922:15ORD - DUB

1 stop30h 50mIcelandair

Deal found 26/8£343

Wed 1/1005:55DUB - ORD

1 stop14h 45mDelta

Mon 6/1017:10ORD - DUB

1 stop15h 50mDelta

Deal found 27/8£344

Thu 30/1008:50DUB - ORD

2 stops16h 33mDelta

Wed 12/1110:35ORD - DUB

2 stops15h 15mDelta

Deal found 27/8£345

Fri 19/909:50DUB - ORD

1 stop15h 39mUnited Airlines

Tue 30/920:20ORD - DUB

Nonstop7h 25mUnited Airlines

Deal found 28/8£346

Thu 23/1010:40DUB - ORD

1 stop13h 35mBritish Airways

Thu 6/1116:06ORD - DUB

2 stops16h 04mBritish Airways

Deal found 25/8£347

Tue 16/908:55DUB - ORD

1 stop11h 15mDelta

Mon 29/913:00ORD - DUB

2 stops13h 20mDelta

Deal found 27/8£348

Thu 4/908:55DUB - ORD

1 stop11h 15mDelta

Thu 11/913:00ORD - DUB

2 stops13h 20mDelta

Deal found 26/8£349

Wed 22/1005:55DUB - ORD

2 stops16h 16mDelta

Fri 31/1016:56ORD - DUB

2 stops17h 49mDelta

Deal found 26/8£349

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 29 August 2025.

Wed 19/1105:55DUB - ORD

1 stop14h 25mDelta

Tue 25/1117:20ORD - DUB

1 stop16h 25mDelta

Deal found 27/8£341

Fri 31/1008:50DUB - ORD

1 stop11h 30mMultiple Airlines

Mon 3/1117:20ORD - DUB

1 stop16h 25mMultiple Airlines

Deal found 27/8£341

Thu 18/909:20DUB - ORD

1 stop11h 35mUnited Airlines

Sat 27/920:20ORD - DUB

Nonstop7h 25mUnited Airlines

Deal found 28/8£342

Fri 19/912:15DUB - ORD

1 stop15h 00mIcelandair

Mon 29/919:25ORD - DUB

1 stop11h 50mIcelandair

Deal found 28/8£342

Wed 29/1008:50DUB - ORD

1 stop11h 30mDelta

Tue 4/1117:20ORD - DUB

1 stop16h 25mDelta

Deal found 27/8£341

Wed 29/1008:50DUB - ORD

1 stop11h 30mMultiple Airlines

Mon 3/1117:20ORD - DUB

1 stop16h 25mMultiple Airlines

Deal found 27/8£341

Sat 13/909:20DUB - ORD

1 stop15h 21mUnited Airlines

Sat 27/914:39ORD - DUB

1 stop10h 31mUnited Airlines

Deal found 28/8£342

Wed 29/1005:55DUB - ORD

1 stop14h 25mMultiple Airlines

Tue 4/1117:20ORD - DUB

1 stop16h 25mMultiple Airlines

Deal found 27/8£341

Fri 19/1208:50DUB - ORD

1 stop11h 30mDelta

Thu 8/107:30ORD - DUB

2 stops18h 20mDelta

Deal found 26/8£341

Mon 15/909:20DUB - ORD

1 stop16h 51mUnited Airlines

Tue 30/920:20ORD - DUB

Nonstop7h 25mUnited Airlines

Deal found 28/8£342

Mon 15/909:20DUB - ORD

1 stop16h 51mUnited Airlines

Sat 27/920:20ORD - DUB

Nonstop7h 25mUnited Airlines

Deal found 28/8£342

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 29 August 2025.

Tue 16/911:35DUB - ORD

Nonstop8h 25mAer Lingus

Mon 29/915:45ORD - DUB

Nonstop7h 25mAer Lingus

Deal found 28/8£342

Fri 3/1016:40DUB - ORD

Nonstop8h 20mAer Lingus

Sun 12/1015:45ORD - DUB

Nonstop7h 25mAer Lingus

Deal found 26/8£347

Thu 25/911:35DUB - ORD

Nonstop8h 25mAer Lingus

Thu 2/1015:45ORD - DUB

Nonstop7h 25mAer Lingus

Deal found 26/8£348

Sun 14/911:35DUB - ORD

Nonstop8h 00mUnited Airlines

Sat 27/920:20ORD - DUB

Nonstop7h 25mUnited Airlines

Deal found 28/8£350

Tue 16/913:45DUB - ORD

Nonstop8h 00mFinnair

Mon 29/922:15ORD - DUB

Nonstop7h 25mFinnair

Deal found 28/8£351

Mon 17/1110:40DUB - ORD

Nonstop8h 50mLufthansa

Mon 24/1118:35ORD - DUB

Nonstop7h 35mLufthansa

Deal found 26/8£356

Sat 15/1110:40DUB - ORD

Nonstop8h 50mUnited Airlines

Wed 26/1118:35ORD - DUB

Nonstop7h 35mUnited Airlines

Deal found 26/8£357

Tue 23/1210:40DUB - ORD

Nonstop8h 50mUnited Airlines

Sat 10/118:35ORD - DUB

Nonstop7h 35mUnited Airlines

Deal found 26/8£358

Fri 26/1210:40DUB - ORD

Nonstop8h 50mUnited Airlines

Sat 10/118:35ORD - DUB

Nonstop7h 35mUnited Airlines

Deal found 26/8£358

Mon 20/1011:35DUB - ORD

Nonstop8h 00mUnited Airlines

Sun 26/1019:35ORD - DUB

Nonstop7h 35mUnited Airlines

Deal found 28/8£359

Sun 14/911:35DUB - ORD

Nonstop8h 00mUnited Airlines

Tue 30/920:20ORD - DUB

Nonstop7h 25mUnited Airlines

Deal found 27/8£360

Last-minute flights from Ireland to O'Hare Intl
Discover last-minute flight deals from Ireland to O'Hare Intl. Data last updated 29 August 2025 and is based on user searches.

Thu 4/908:55DUB - ORD

1 stop11h 15mDelta

Wed 10/908:25ORD - DUB

1 stop17h 30mDelta

Deal found 26/8£347

Thu 4/908:55DUB - ORD

1 stop11h 15mDelta

Wed 17/910:15ORD - DUB

2 stops16h 05mDelta

Deal found 26/8£349

Tue 9/908:55DUB - ORD

1 stop11h 15mDelta

Mon 15/910:15ORD - DUB

2 stops16h 00mDelta

Deal found 27/8£344

Sat 13/909:20DUB - ORD

1 stop30h 31mUnited Airlines

Tue 30/920:20ORD - DUB

Nonstop7h 25mUnited Airlines

Deal found 28/8£342

Sun 14/911:35DUB - ORD

Nonstop8h 00mUnited Airlines

Sun 28/920:20ORD - DUB

Nonstop7h 25mUnited Airlines

Deal found 28/8£350

Tue 16/905:55DUB - ORD

1 stop15h 00mLufthansa

Tue 30/920:20ORD - DUB

Nonstop7h 25mLufthansa

Deal found 27/8£346

Tue 16/908:55DUB - ORD

1 stop11h 15mDelta

Mon 29/913:00ORD - DUB

2 stops13h 20mDelta

Deal found 27/8£348

Tue 16/905:55DUB - ORD

1 stop14h 15mKLM

Tue 30/916:15ORD - DUB

1 stop12h 10mKLM

Deal found 27/8£349

Wed 17/912:15DUB - ORD

1 stop12h 00mIcelandair

Fri 26/922:15ORD - DUB

1 stop30h 50mIcelandair

Deal found 26/8£343

Thu 18/914:15DUB - ORD

1 stop13h 00mIcelandair

Sun 28/919:25ORD - DUB

1 stop11h 50mIcelandair

Deal found 26/8£343

Fri 19/909:50DUB - ORD

1 stop15h 39mUnited Airlines

Tue 30/920:20ORD - DUB

Nonstop7h 25mUnited Airlines

Deal found 28/8£346

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 29 August 2025.

Thu 9/1012:30DUB - ORD

1 stop13h 28mUnited Airlines

Deal found 28/8£377

Wed 10/911:35DUB - ORD

Nonstop8h 00mUnited Airlines

Deal found 27/8£384

Mon 6/1011:30DUB - ORD

1 stop15h 21mJetBlue

Deal found 27/8£394

Mon 5/120:40DUB - ORD

1 stop28h 05mBritish Airways

Deal found 28/8£398

Sat 29/1108:55DUB - ORD

1 stop15h 50mBritish Airways

Deal found 27/8£399

Mon 5/111:30DUB - ORD

2 stops13h 52mMultiple Airlines

Deal found 27/8£400

Mon 22/910:40DUB - ORD

1 stop14h 15mJetBlue

Deal found 25/8£404

Sun 28/912:15DUB - ORD

1 stop15h 00mIcelandair

Deal found 27/8£419

Sat 22/1104:15DUB - ORD

2 stops21h 35mTAP AIR PORTUGAL

Deal found 28/8£423

Mon 29/920:55DUB - ORD

1 stop20h 55mMultiple Airlines

Deal found 28/8£428

Thu 25/910:40DUB - ORD

1 stop14h 15mJetBlue

Deal found 27/8£429

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

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 19/11

05:55-14:20

1 stop14h 25m

Chicago O'Hare Intl

Tue 25/11

17:20-15:45

1 stop16h 25m

£341

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 31/10

08:50-15:20

1 stop11h 30m

Chicago O'Hare Intl

Mon 3/11

17:20-15:45

1 stop16h 25m

£341

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 29/10

08:50-15:20

1 stop11h 30m

Chicago O'Hare Intl

Tue 4/11

17:20-15:45

1 stop16h 25m

£341

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 29/10

08:50-15:20

1 stop11h 30m

Chicago O'Hare Intl

Mon 3/11

17:20-15:45

1 stop16h 25m

£341

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 29/10

05:55-15:20

1 stop14h 25m

Chicago O'Hare Intl

Tue 4/11

17:20-15:45

1 stop16h 25m

£341

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 19/12

08:50-14:20

1 stop11h 30m

Chicago O'Hare Intl

Thu 8/1

07:30-07:50

2 stops18h 20m

£341

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 18/9

09:20-14:55

1 stop11h 35m

Chicago O'Hare Intl

Sat 27/9

20:20-09:45

Nonstop7h 25m

£342

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 19/9

12:15-21:15

1 stop15h 00m

Chicago O'Hare Intl

Mon 29/9

19:25-13:15

1 stop11h 50m

£342

DublinChicago

DUB - ORD

DUBORD

Dublin

Sat 13/9

09:20-18:41

1 stop15h 21m

Chicago O'Hare Intl

Sat 27/9

14:39-07:10

1 stop10h 31m

£342

DublinChicago

DUB - ORD

DUBORD

Dublin

Mon 15/9

09:20-20:11

1 stop16h 51m

Chicago O'Hare Intl

Tue 30/9

20:20-09:45

Nonstop7h 25m

£342

Flights are sorted by cheapest return flights first.

Deals found on 28/8

Showing 1-10 of 21 results

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, January is the cheapest month in which you can book a flight from Ireland to Chicago O'Hare Intl Airport (average of £595). Flying from Ireland to Chicago O'Hare Intl Airport in July is currently the most expensive (average of £843). 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?

Unlike at midday, when flights are generally more expensive, you can save up to 7% 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

The most flights from IE0 to ORD are scheduled on a Monday (19 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (18 on average).

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

1,321 reviews

Check prices

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

1,321 reviews

Finnair

7.6

Good

1,321 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

United Airlines

7.4

Good

8,941 reviews

Finnair

7.6

Good

1,321 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

Aer Lingus

7.2

Good

1,240 reviews

Finnair

7.6

Good

1,321 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

Icelandair

7.0

Good

537 reviews

Finnair

7.6

Good

1,321 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

British Airways

6.7

Okay

7,320 reviews

Finnair

7.6

Good

1,321 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

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 14h 25m. Fly via Delta to get the fastest option. The distance between Ireland and Chicago O'Hare Intl Airport is about 3661 mi.
What are the cheapest airlines to fly from Ireland to Chicago O'Hare Intl Airport one-way?
For one-way options, check prices for United Airlines. According to our data, you can fly for as low as £377. Users have also found prices from £394 and £398 on JetBlue and British Airways, respectively.
What are the most reliable airlines from Ireland to Chicago O'Hare Intl Airport?
Consider Iberia (85%), American Airlines (58%) or Aer Lingus (58%) 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 £1,021 for a flight from Ireland to Chicago O'Hare Intl Airport. The cheapest flight overall is £302 while the most popular route, (Dublin - Chicago O'Hare Intl) is currently priced at £277.
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, January is the cheapest month in which you can book a flight from Ireland to Chicago O'Hare Intl Airport (average of £595). Flying from Ireland to Chicago O'Hare Intl Airport in July is currently the most expensive (average of £843). 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

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Alternative routes for Ireland to O'Hare Intl

Heathrow to O'Hare Intl flights

Gatwick to O'Hare Intl flights

London City to O'Hare Intl flights

Heathrow to Midway flights

Stansted to O'Hare Intl flights

Luton to O'Hare Intl flights

Gatwick to Midway flights

Manchester to O'Hare Intl flights

Manchester to Midway flights

Istanbul to O'Hare Intl flights

Edinburgh to O'Hare Intl flights

Bruxelles-National to O'Hare Intl flights

Glasgow Intl to O'Hare Intl flights

Norwich to O'Hare Intl flights

Newcastle upon Tyne to O'Hare Intl flights

Glasgow Intl to Midway flights

Birmingham to O'Hare Intl flights

Edinburgh to Midway flights

London City to Midway flights

Leeds to O'Hare Intl flights

Dublin to O'Hare Intl flights

Liverpool to O'Hare Intl flights

Newcastle upon Tyne to Midway flights

Birmingham to Midway flights

Bristol to O'Hare Intl flights

Madrid to O'Hare Intl flights

Dublin to Midway flights

Barcelona-El Prat to O'Hare Intl flights

Belfast Intl to O'Hare Intl flights

Bristol to Midway flights

Frederic Chopin to O'Hare Intl flights

Southampton to O'Hare Intl flights

Leeds to Midway flights

Cardiff to Midway flights

Cardiff to O'Hare Intl flights

Exeter to O'Hare Intl flights

Newquay to O'Hare Intl flights

Southend to O'Hare Intl flights

Athens to O'Hare Intl flights

Inverness to O'Hare Intl flights

Darlington to Midway flights

Amsterdam to O'Hare Intl flights

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Top 6 airlines flying from Ireland to O'Hare Intl

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	Cheapest£264	Average£424	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
British Airways	Cheapest£269	Average£483	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Finnair	Cheapest£313	Average£531	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
Aer Lingus	Cheapest£334	Average£445	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
United Airlines	Cheapest£344	Average£630	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
American Airlines	Cheapest£486	Average£586	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights

Fly with Cheapflights

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?

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Cheap flights from Ireland to Chicago O'Hare Intl Airport from £341

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 29/10. 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

Keep the following information in mind while searching for Ireland to O'Hare Intl flight deals. Data was last updated 29 August 2025.

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Find 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 29 August 2025.

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 29 August 2025.

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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

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?

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 29 August 2025.

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 29 August 2025.

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

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?

What are the cheapest airlines to fly from Ireland to Chicago O'Hare Intl Airport one-way?

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?

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Alternative routes for Ireland to O'Hare Intl

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Top 6 airlines flying from Ireland to O'Hare Intl

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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 29 August 2025.