How long is the flight from Ireland to Chicago?

Departing from Ireland to Chicago will take you 21h 05m. Ireland and Chicago are separated by a distance of 3661 mi. This flight may include one or multiple stops.

What are the cheapest airlines to fly from Ireland to Chicago one-way?

£388 is the cheapest one-way deal found within the past few days, from JetBlue. You may also be able to find cheap deals on Aer Lingus and Delta, with prices starting from £402 and £457, respectively.

What is the cheapest day to fly from Ireland to Chicago?

Travellers seeking maximum savings on their Ireland to Chicago flight should consider departing on Wednesday afternoons 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 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 when rainfall is around 43.0 mm.

If weather is an important factor for your trip to Chicago, 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?

The cheapest flight price from Ireland to Chicago is £299. On average you can expect to pay £1,009. The most popular route, (Dublin - Chicago O'Hare Intl), can usually be booked for £337.

What are the most reliable airlines from Ireland to Chicago?

The top 3 most reliable airlines when flying from Ireland to Chicago are Iberia (81%), American Airlines (78%) and Aer Lingus (78%).

What are the most popular airlines that fly from Ireland to Chicago?

The most popular airlines flying from Ireland to Chicago are American Airlines, Finnair and British Airways. Something to consider prior to booking your flight.

Can I find deals for flights from Ireland to Chicago that include hotel bookings?

Yes. In addition to deals on Ireland to Chicago flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Ireland to Chicago?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ireland to Chicago.

Can I find deals for business class flights from Ireland to Chicago?

Yes. Cheapflights offers flight deals from Ireland to Chicago by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£322+ Cheap Flights from Ireland to Chicago

Cheap flight deals from Ireland to Chicago

Round-trip from	£322
Popular in	July
Cheapest in	January
Average price	£373
Good round-trip deal	£465 or less
Good one-way deal	£500 or less

Scandinavian Airlines
29/10-2/11
3 total stops
31h 50m 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 September 2025

Search Deals

Price to beat on a round-trip flight from Ireland to Chicago (CHI).

Search Deals

Price to beat on a one-way flight from Ireland to Chicago (CHI).

Search Deals

Find flight deals from Ireland to Chicago

Cheapest flights from Ireland to Chicago
Explore the most affordable flight options available from Ireland to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 September 2025.

Wed 29/1012:30DUB - ORD

1 stop13h 35mScandinavian Airlines

Sun 2/1119:20ORD - DUB

2 stops18h 15mScandinavian Airlines

Deal found 16/9£322

Fri 31/1011:55DUB - ORD

1 stop14h 10mMultiple Airlines

Fri 7/1118:35ORD - DUB

Nonstop7h 35mMultiple Airlines

Deal found 16/9£327

Fri 31/1019:05DUB - ORD

1 stop27h 40mScandinavian Airlines

Sun 2/1119:20ORD - DUB

1 stop17h 00mScandinavian Airlines

Deal found 17/9£328

Wed 5/1105:10DUB - ORD

1 stop20h 55mLufthansa

Tue 11/1121:50ORD - DUB

1 stop13h 20mLufthansa

Deal found 15/9£329

Tue 18/1111:30DUB - ORD

2 stops35h 15mScandinavian Airlines

Sun 23/1119:20ORD - DUB

2 stops18h 15mScandinavian Airlines

Deal found 17/9£330

Thu 16/1005:55DUB - ORD

1 stop13h 00mMultiple Airlines

Mon 20/1020:20ORD - DUB

Nonstop7h 25mMultiple Airlines

Deal found 17/9£330

Sun 2/1105:10DUB - ORD

1 stop16h 10mLufthansa

Sun 9/1118:35ORD - DUB

Nonstop7h 35mLufthansa

Deal found 15/9£333

Tue 23/909:20DUB - ORD

1 stop11h 35mAir Canada

Tue 7/1016:42ORD - DUB

1 stop9h 33mAir Canada

Deal found 15/9£334

Fri 31/1018:55DUB - ORD

2 stops27h 50mScandinavian Airlines

Fri 7/1119:20ORD - DUB

2 stops34h 00mScandinavian Airlines

Deal found 16/9£335

Tue 23/913:45DUB - ORD

Nonstop8h 00mAmerican Airlines

Tue 7/1022:35ORD - DUB

1 stop12h 30mAmerican Airlines

Deal found 15/9£336

Thu 30/1005:55DUB - MDW

2 stops17h 30mDelta

Wed 12/1112:47MDW - DUB

1 stop12h 58mDelta

Deal found 15/9£344

Thu 30/1005:55DUB - MDW

2 stops17h 30mDelta

Thu 6/1109:35MDW - DUB

2 stops16h 30mDelta

Deal found 15/9£346

Best flights from Ireland to Chicago
Discover carefully curated flight deals from Ireland to Chicago that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 18 September 2025.

Fri 31/1019:05DUB - ORD

1 stop27h 40mScandinavian Airlines

Sun 2/1119:20ORD - DUB

1 stop17h 00mScandinavian Airlines

Deal found 17/9£328

Thu 6/1105:00DUB - ORD

1 stop21h 05mLufthansa

Wed 12/1118:35ORD - DUB

Nonstop7h 35mLufthansa

Deal found 16/9£333

Sun 21/1219:25DUB - ORD

1 stop24h 25mBritish Airways

Sun 4/120:45ORD - DUB

1 stop29h 10mBritish Airways

Deal found 16/9£334

Fri 31/1005:10DUB - ORD

1 stop16h 10mMultiple Airlines

Tue 4/1118:50ORD - DUB

1 stop16h 55mMultiple Airlines

Deal found 15/9£335

Sun 2/1108:50DUB - ORD

1 stop11h 30mDelta

Mon 10/1117:08ORD - DUB

2 stops16h 37mDelta

Deal found 16/9£338

Mon 3/1105:10DUB - ORD

1 stop14h 00mLufthansa

Sun 9/1118:35ORD - DUB

Nonstop7h 35mLufthansa

Deal found 15/9£333

Fri 31/1018:55DUB - ORD

2 stops27h 50mScandinavian Airlines

Fri 7/1119:20ORD - DUB

2 stops34h 00mScandinavian Airlines

Deal found 16/9£334

Sun 2/1105:10DUB - ORD

1 stop20h 55mMultiple Airlines

Sun 9/1118:50ORD - DUB

1 stop16h 55mMultiple Airlines

Deal found 15/9£335

Thu 30/1005:55DUB - MDW

2 stops17h 30mDelta

Thu 6/1109:20MDW - DUB

1 stop16h 25mDelta

Deal found 15/9£344

Tue 18/1105:00DUB - ORD

1 stop14h 10mLufthansa

Sun 23/1118:35ORD - DUB

Nonstop7h 35mLufthansa

Deal found 17/9£336

Thu 30/1005:55DUB - MDW

2 stops17h 30mDelta

Wed 12/1112:47MDW - DUB

1 stop12h 58mDelta

Deal found 15/9£344

Wed 29/1009:10DUB - ORD

1 stop16h 55mLufthansa

Tue 4/1121:50ORD - DUB

1 stop13h 20mLufthansa

Deal found 16/9£337

Thu 6/1105:55DUB - MDW

2 stops17h 48mDelta

Wed 12/1112:47MDW - DUB

1 stop12h 58mDelta

Deal found 16/9£344

Wed 15/1005:55DUB - ORD

1 stop15h 00mLufthansa

Wed 22/1020:20ORD - DUB

Nonstop7h 25mLufthansa

Deal found 16/9£337

Thu 30/1005:55DUB - MDW

2 stops17h 30mDelta

Mon 3/1109:35MDW - DUB

2 stops16h 30mDelta

Deal found 16/9£346

Fri 7/1105:55DUB - MDW

2 stops18h 30mDelta

Thu 13/1113:47MDW - DUB

1 stop11h 58mDelta

Deal found 17/9£347

Mon 3/1105:55DUB - MDW

2 stops17h 48mDelta

Sun 9/1110:47MDW - DUB

1 stop14h 58mDelta

Deal found 17/9£347

Direct flights from Ireland to Chicago
Explore direct flight options from Ireland to Chicago based on user searches, and compare prices and availability for your desired travel dates. Data last updated 18 September 2025.

Wed 5/1111:30DUB - ORD

Nonstop8h 30mAer Lingus

Tue 11/1115:50ORD - DUB

Nonstop7h 20mAer Lingus

Deal found 15/9£336

Sat 13/1215:20DUB - ORD

Nonstop8h 35mAer Lingus

Fri 9/121:00ORD - DUB

Nonstop7h 20mAer Lingus

Deal found 16/9£339

Thu 16/1011:35DUB - ORD

Nonstop8h 25mAer Lingus

Mon 20/1021:15ORD - DUB

Nonstop7h 25mAer Lingus

Deal found 17/9£340

Mon 13/1011:35DUB - ORD

Nonstop8h 25mAer Lingus

Tue 21/1021:15ORD - DUB

Nonstop7h 25mAer Lingus

Deal found 15/9£341

Fri 7/1110:40DUB - ORD

Nonstop8h 50mUnited Airlines

Thu 13/1118:35ORD - DUB

Nonstop7h 35mUnited Airlines

Deal found 15/9£347

Sat 1/1110:40DUB - ORD

Nonstop8h 50mUnited Airlines

Fri 7/1118:35ORD - DUB

Nonstop7h 35mUnited Airlines

Deal found 17/9£350

Sat 27/911:35DUB - ORD

Nonstop8h 00mLufthansa

Sat 4/1020:20ORD - DUB

Nonstop7h 25mLufthansa

Deal found 16/9£350

Fri 3/1011:35DUB - ORD

Nonstop8h 00mUnited Airlines

Tue 7/1020:20ORD - DUB

Nonstop7h 25mUnited Airlines

Deal found 17/9£352

Sun 2/1110:40DUB - ORD

Nonstop8h 50mUnited Airlines

Sun 9/1118:35ORD - DUB

Nonstop7h 35mUnited Airlines

Deal found 15/9£390

Sat 27/911:35DUB - ORD

Nonstop8h 00mUnited Airlines

Wed 8/1020:20ORD - DUB

Nonstop7h 25mUnited Airlines

Deal found 15/9£393

Last-minute flights from Ireland to Chicago
Discover last-minute flight deals from Ireland to Chicago. Data last updated 18 September 2025 and is based on user searches.

Tue 23/909:20DUB - ORD

1 stop11h 35mAir Canada

Tue 7/1016:42ORD - DUB

1 stop9h 33mAir Canada

Deal found 15/9£334

Tue 23/913:45DUB - ORD

Nonstop8h 00mAmerican Airlines

Tue 7/1022:35ORD - DUB

1 stop12h 30mAmerican Airlines

Deal found 15/9£336

Mon 13/1005:55DUB - ORD

1 stop15h 00mLufthansa

Tue 21/1020:20ORD - DUB

Nonstop7h 25mLufthansa

Deal found 15/9£336

Wed 15/1005:55DUB - ORD

1 stop15h 00mLufthansa

Wed 22/1020:20ORD - DUB

Nonstop7h 25mLufthansa

Deal found 16/9£337

Thu 16/1005:55DUB - ORD

1 stop13h 00mMultiple Airlines

Mon 20/1020:20ORD - DUB

Nonstop7h 25mMultiple Airlines

Deal found 17/9£330

Wed 29/1012:30DUB - ORD

1 stop13h 35mScandinavian Airlines

Sun 2/1119:20ORD - DUB

2 stops18h 15mScandinavian Airlines

Deal found 16/9£322

Thu 30/1005:55DUB - MDW

2 stops17h 30mDelta

Wed 12/1112:47MDW - DUB

2 stops13h 58mDelta

Deal found 15/9£344

Thu 30/1005:55DUB - MDW

2 stops17h 30mDelta

Mon 3/1109:35MDW - DUB

2 stops16h 30mDelta

Deal found 15/9£346

Fri 31/1011:55DUB - ORD

1 stop14h 10mMultiple Airlines

Fri 7/1118:35ORD - DUB

Nonstop7h 35mMultiple Airlines

Deal found 16/9£327

Fri 31/1019:05DUB - ORD

1 stop27h 40mScandinavian Airlines

Sun 2/1119:20ORD - DUB

1 stop17h 00mScandinavian Airlines

Deal found 17/9£328

Fri 31/1011:55DUB - ORD

1 stop14h 10mLufthansa

Fri 7/1118:35ORD - DUB

Nonstop7h 35mLufthansa

Deal found 16/9£333

Fri 31/1018:55DUB - ORD

2 stops27h 50mScandinavian Airlines

Fri 7/1119:20ORD - DUB

2 stops34h 00mScandinavian Airlines

Deal found 16/9£335

One-way flights from Ireland to Chicago
Search for one-way flight options from Ireland to Chicago. Find affordable one-way fares based on user searches. Data last updated 18 September 2025.

Wed 15/1012:40DUB - MDW

2 stops40h 45mMultiple Airlines

Deal found 16/9£376

Thu 2/1010:40DUB - ORD

1 stop14h 15mJetBlue

Deal found 16/9£388

Mon 5/111:30DUB - ORD

2 stops18h 12mMultiple Airlines

Deal found 15/9£392

Wed 15/1016:40DUB - ORD

Nonstop8h 20mAer Lingus

Deal found 16/9£402

Sat 18/1011:30DUB - ORD

1 stop12h 55mJetBlue

Deal found 16/9£404

Wed 12/1111:30DUB - ORD

Nonstop8h 30mAer Lingus

Deal found 16/9£413

Fri 6/216:40DUB - ORD

Nonstop8h 35mAer Lingus

Deal found 14/9£413

Sat 11/1011:30DUB - ORD

1 stop12h 55mJetBlue

Deal found 15/9£419

Thu 18/1204:25DUB - ORD

1 stop16h 50mTAP AIR PORTUGAL

Deal found 16/9£454

Sun 18/104:25DUB - ORD

2 stops22h 34mMultiple Airlines

Deal found 15/9£457

Thu 20/1105:55DUB - MDW

2 stops18h 13mDelta

Deal found 15/9£457

Mon 22/1205:55DUB - MDW

2 stops17h 25mDelta

Deal found 16/9£458

Fly from

Fly to

Route

Depart

Return

Price

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 31/10

19:05-17:45

1 stop27h 40m

Chicago O'Hare Intl

Sun 2/11

19:20-18:20

1 stop17h 00m

£328

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 6/11

05:00-20:05

1 stop21h 05m

Chicago O'Hare Intl

Wed 12/11

18:35-08:10

Nonstop7h 35m

£333

DublinChicago

DUB - ORD

DUBORD

Dublin

Mon 3/11

05:10-13:10

1 stop14h 00m

Chicago O'Hare Intl

Sun 9/11

18:35-08:10

Nonstop7h 35m

£333

DublinChicago

DUB - ORD

DUBORD

Dublin

Sun 21/12

19:25-13:50

1 stop24h 25m

Chicago O'Hare Intl

Sun 4/1

20:45-07:55

1 stop29h 10m

£334

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 31/10

18:55-17:45

2 stops27h 50m

Chicago O'Hare Intl

Fri 7/11

19:20-11:20

2 stops34h 00m

£334

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 31/10

05:10-16:20

1 stop16h 10m

Chicago O'Hare Intl

Tue 4/11

18:50-17:45

1 stop16h 55m

£335

DublinChicago

DUB - ORD

DUBORD

Dublin

Sun 2/11

05:10-21:05

1 stop20h 55m

Chicago O'Hare Intl

Sun 9/11

18:50-17:45

1 stop16h 55m

£335

DublinChicago

DUB - ORD

DUBORD

Dublin

Tue 18/11

05:00-13:10

1 stop14h 10m

Chicago O'Hare Intl

Sun 23/11

18:35-08:10

Nonstop7h 35m

£336

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 29/10

09:10-21:05

1 stop16h 55m

Chicago O'Hare Intl

Tue 4/11

21:50-17:10

1 stop13h 20m

£337

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 15/10

05:55-14:55

1 stop15h 00m

Chicago O'Hare Intl

Wed 22/10

20:20-09:45

Nonstop7h 25m

£337

Flights are sorted by cheapest return flights first.

Deals found on 16/9

Showing 1-10 of 35 results

Best time to book a flight from Ireland to Chicago

Have a flexible travel schedule? Discover the best time to fly to Chicago 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

What is the cheapest month to book a flight from Ireland to Chicago?

Currently, January is the cheapest month in which you can book a flight from Ireland to Chicago (average of £595). Flying from Ireland to Chicago 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 CHI?

A simple way to save on the total cost of your ticket is to fly from Ireland to Chicago in the afternoon. If you’re flexible enough to do this you can expect to save up to 9% on your trip compared to booking a flight at midday.

Weekly flight availability from Ireland to Chicago

The most flights from IE0 to CHI are scheduled on a Monday (19 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (15 on average).

Reviews of airlines servicing Chicago

Check out reviews from past customers who have flown with Finnair, United Airlines, andBrussels Airlines from Ireland to Chicago to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Finnair

7.6

Good

1,324 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

1,324 reviews

Finnair

7.6

Good

1,324 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

United Airlines

7.4

Good

8,926 reviews

Finnair

7.6

Good

1,324 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

Brussels Airlines

7.3

Good

359 reviews

Finnair

7.6

Good

1,324 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

Aer Lingus

7.2

Good

1,277 reviews

Finnair

7.6

Good

1,324 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

Icelandair

7.0

Good

545 reviews

Finnair

7.6

Good

1,324 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?
Departing from Ireland to Chicago will take you 21h 05m. Ireland and Chicago are separated by a distance of 3661 mi. This flight may include one or multiple stops.
What are the cheapest airlines to fly from Ireland to Chicago one-way?
£388 is the cheapest one-way deal found within the past few days, from JetBlue. You may also be able to find cheap deals on Aer Lingus and Delta, with prices starting from £402 and £457, respectively.
What are the most reliable airlines from Ireland to Chicago?
The top 3 most reliable airlines when flying from Ireland to Chicago are Iberia (81%), American Airlines (78%) and Aer Lingus (78%).
What are the cheapest flights from Ireland to Chicago?
The cheapest flight price from Ireland to Chicago is £299. On average you can expect to pay £1,009. The most popular route, (Dublin - Chicago O'Hare Intl), can usually be booked for £337.
Can I find deals for flights from Ireland to Chicago that include hotel bookings?
Yes. In addition to deals on Ireland to Chicago flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Ireland to Chicago?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ireland to Chicago.
Can I find deals for business class flights from Ireland to Chicago?
Yes. Cheapflights offers flight deals from Ireland to Chicago 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?
Currently, January is the cheapest month in which you can book a flight from Ireland to Chicago (average of £595). Flying from Ireland to Chicago 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

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Ireland to Chicago

Heathrow to O'Hare Intl flights

Gatwick to O'Hare Intl flights

Heathrow to Midway flights

London City to O'Hare Intl flights

Luton to O'Hare Intl flights

Stansted to O'Hare Intl flights

Manchester to O'Hare Intl flights

Manchester to Midway flights

Gatwick to Midway flights

Heathrow to St. Louis flights

Bruxelles-National to O'Hare Intl flights

Edinburgh to O'Hare Intl flights

Gatwick to St. Louis flights

Istanbul to O'Hare Intl flights

London City to St. Louis flights

Dublin to O'Hare Intl flights

Birmingham to O'Hare Intl flights

Birmingham to Midway flights

Edinburgh to Midway flights

Newcastle upon Tyne to O'Hare Intl flights

London City to Midway flights

Leeds to O'Hare Intl flights

Glasgow Intl to O'Hare Intl flights

Birmingham to St. Louis flights

Manchester to St. Louis flights

Newcastle upon Tyne to Midway flights

Grimsby to O'Hare Intl flights

Stansted to St. Louis flights

Luton to St. Louis flights

Belfast Intl to O'Hare Intl flights

Belfast City to O'Hare Intl flights

Dublin to Midway flights

Liverpool to O'Hare Intl flights

Glasgow Intl to Midway flights

Edinburgh to St. Louis flights

Inverness to O'Hare Intl flights

Newcastle upon Tyne to St. Louis flights

Heathrow to Moline flights

Southampton to O'Hare Intl flights

Darlington to Midway flights

Cardiff to Midway flights

Cardiff to O'Hare Intl flights

Madrid to O'Hare Intl flights

Heathrow to Peoria flights

Southend to O'Hare Intl flights

Norwich to O'Hare Intl flights

Darlington to O'Hare Intl flights

Leeds to Midway flights

Other flights to Chicago

Chicago O'Hare Intl Airport to New York John F Kennedy Intl Airport flights

Chicago O'Hare Intl Airport to Orlando Airport flights

Chicago O'Hare Intl Airport to Atlanta flights

Chicago O'Hare Intl Airport to Las Vegas flights

Chicago O'Hare Intl Airport to Denver flights

Chicago O'Hare Intl Airport to Dallas/Fort Worth Airport flights

Chicago O'Hare Intl Airport to Miami flights

Chicago O'Hare Intl Airport to Minneapolis flights

Chicago O'Hare Intl Airport to Grand Rapids flights

Chicago O'Hare Intl Airport to San Francisco flights

Chicago O'Hare Intl Airport to St. Louis flights

Chicago O'Hare Intl Airport to Seattle flights

Chicago O'Hare Intl Airport to Los Angeles flights

Chicago O'Hare Intl Airport to Toronto Pearson Intl Airport flights

Chicago O'Hare Intl Airport to Boston flights

Chicago O'Hare Intl Airport to Des Moines flights

Chicago O'Hare Intl Airport to Lisbon flights

Chicago O'Hare Intl Airport to New York John F Kennedy Intl Airport flights

Top 6 airlines flying from Ireland to Chicago

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	Cheapest£293	Average£402	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
British Airways	Cheapest£294	Average£478	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Finnair	Cheapest£310	Average£526	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
Aer Lingus	Cheapest£338	Average£462	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
United Airlines	Cheapest£341	Average£632	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
American Airlines	Cheapest£446	Average£562	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights

Fly with Cheapflights

How does Cheapflights help users find flights from Ireland to Chicago?

Cheapflights helps you search for flights from Ireland to Chicago via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Ireland to Chicago?

Cheapflights simply makes it quick and affordable to book flights from Ireland to Chicago 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 Chicago with no change fees?

Yes, we can. To see specific flights from Ireland to Chicago with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Ireland to Chicago become cheaper?

Not ready to book yet? You can track prices for flights from Ireland to Chicago on Cheapflights with our Price Alert feature and get notified when better prices are available.

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Cheap flights from Ireland to Chicago from £322

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 Chicago

Keep the following information in mind while searching for Ireland to Chicago flight deals. Data was last updated 18 September 2025.

Round-trip from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

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Cheapest flights from Ireland to ChicagoExplore the most affordable flight options available from Ireland to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 September 2025.

Explore the most affordable flight options available from Ireland to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 September 2025.

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Use the filters below to find and compare flights from Ireland to Chicago that are best for you.

Best time to book a flight from Ireland to Chicago

Have a flexible travel schedule? Discover the best time to fly to Chicago from Ireland with our price prediction graph.

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Everything you need to know about your flight from Ireland to Chicago

What is the cheapest month to book a flight from Ireland to Chicago?

What is the cheapest time of day to fly from IE to CHI?

Find hourly flight availability from Ireland to Chicago. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 18 September 2025.

Weekly flight availability from Ireland to Chicago

Explore weekly flight availability from Ireland to Chicago. 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 18 September 2025.

Reviews of airlines servicing Chicago

Check out reviews from past customers who have flown with Finnair, United Airlines, andBrussels Airlines from Ireland to Chicago to help guide your decision. You can also see how each airline stacks up in terms of 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 Chicago. 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?

What are the cheapest airlines to fly from Ireland to Chicago one-way?

What are the most reliable airlines from Ireland to Chicago?

What are the cheapest flights from Ireland to Chicago?

Can I find deals for flights from Ireland to Chicago that include hotel bookings?

How can I find direct flights from Ireland to Chicago?

Can I find deals for business class flights from Ireland to Chicago?

What is the cheapest month to book a flight from Ireland to Chicago?

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Alternative routes for Ireland to Chicago

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Top 6 airlines flying from Ireland to Chicago

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Cheapest flights from Ireland to Chicago
Explore the most affordable flight options available from Ireland to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 September 2025.