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

£355 is the cheapest one-way deal found within the past few days, from TAP AIR PORTUGAL. You may also be able to find cheap deals on Scandinavian Airlines and JetBlue, with prices starting from £361 and £362, 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 Tuesday mornings when fares are most often at their lowest. Saturday at midday flights should be avoided if possible as fares are typically the most expensive at this time.

What are the cheapest flights from Ireland to Chicago?

The cheapest flight price from Ireland to Chicago is £375. On average you can expect to pay £1,136. The most popular route, (Dublin - Chicago O'Hare Intl), can usually be booked for £391.

What are the most reliable airlines from Ireland to Chicago?

The top 3 most reliable airlines when flying from Ireland to Chicago are Aer Lingus (88%), American Airlines (82%) and British Airways (82%).

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.

What is the cheapest day to fly round-trip from Ireland to Chicago?

Users have found that leaving on a Monday can be a cost-effective option. It’s possible to save up to 21% on your flight compared to booking on days when demand is much higher.

How far in advance should I book a flight from Ireland to Chicago?

Users have found that booking a flight from Ireland to Chicago at least 57 days early can save you up to 63% on average compared to booking a flight this week. If booking 57 days before your flight isn’t an option for you, users have found flights from Ireland to Chicago for as little as £387 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 £440 for flights departing within the next 3 days.

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

Flights from Ireland to Chicago lean towards being more expensive in July. Prices are generally better when you fly from Ireland to Chicago in November, with the cheapest ticket starting at £258.

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.

£527+ Flights from Ireland to Chicago

Cheap flight deals from Ireland to Chicago

Round-trip from	£398
One-way from	£355
Popular in	July
Cheapest in	November
Average price	£429
Good round-trip deal	£494 or less
Good one-way deal	£392 or less

Delta
18/5-26/5
3 total stops
35h 25m total
Ireland to Chicago

Search Deals

TAP AIR PORTUGAL
28/10
1 total stop
28h 00m total
Ireland to Chicago

Search Deals

Highest demand for flights based on searches. 15% potential increase in price (£61 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).

Search Deals

Average for round-trip flights in May 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 1 May 2025.

Thu 8/505:55DUB - ORD

2 stops14h 33mDelta

Wed 14/511:03ORD - DUB

1 stop14h 52mDelta

Deal found 1/5£398

Thu 8/508:55DUB - MDW

2 stops14h 50mDelta

Tue 13/516:15MDW - DUB

1 stop10h 30mDelta

Deal found 1/5£398

Wed 29/1011:30DUB - ORD

2 stops22h 58mAmerican Airlines

Sat 15/1116:45ORD - DUB

1 stop9h 55mAmerican Airlines

Deal found 1/5£400

Mon 2/611:35DUB - ORD

Nonstop8h 00mMultiple Airlines

Mon 30/618:30ORD - DUB

1 stop31h 45mMultiple Airlines

Deal found 1/5£400

Fri 9/511:35DUB - ORD

Nonstop8h 00mUnited Airlines

Mon 12/520:15ORD - DUB

Nonstop7h 30mUnited Airlines

Deal found 1/5£404

Sat 24/511:00DUB - MDW

1 stop16h 13mKLM

Sat 31/513:55MDW - DUB

1 stop12h 00mKLM

Deal found 1/5£406

Fri 24/1012:40DUB - ORD

1 stop33h 30mScandinavian Airlines

Mon 3/1119:20ORD - DUB

2 stops33h 25mScandinavian Airlines

Deal found 1/5£409

Thu 11/911:35DUB - ORD

Nonstop8h 00mLufthansa

Wed 17/918:30ORD - DUB

1 stop16h 25mLufthansa

Deal found 29/4£411

Sat 13/910:55DUB - ORD

1 stop12h 05mBritish Airways

Thu 2/1017:00ORD - DUB

1 stop10h 50mBritish Airways

Deal found 30/4£419

Sun 14/913:45DUB - ORD

Nonstop8h 00mFinnair

Thu 2/1022:20ORD - DUB

Nonstop7h 20mFinnair

Deal found 30/4£431

Thu 30/1017:25DUB - ORD

1 stop27h 05mKLM

Tue 4/1114:10ORD - DUB

1 stop13h 10mKLM

Deal found 30/4£436

Thu 8/518:40DUB - ORD

2 stops23h 20mSWISS

Wed 14/519:05ORD - DUB

1 stop35h 05mSWISS

Deal found 30/4£438

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 1 May 2025.

Sun 18/505:55DUB - MDW

2 stops18h 50mDelta

Mon 26/509:20MDW - DUB

1 stop16h 35mDelta

Deal found 1/5£398

Mon 2/611:35DUB - ORD

Nonstop8h 00mMultiple Airlines

Mon 30/618:30ORD - DUB

1 stop31h 45mMultiple Airlines

Deal found 1/5£400

Tue 16/913:45DUB - ORD

Nonstop8h 00mFinnair

Mon 29/922:20ORD - DUB

Nonstop7h 20mFinnair

Deal found 1/5£404

Tue 20/511:35DUB - ORD

Nonstop8h 00mUnited Airlines

Tue 27/520:15ORD - DUB

Nonstop7h 30mUnited Airlines

Deal found 29/4£405

Sat 24/511:00DUB - MDW

1 stop16h 13mKLM

Sat 31/513:55MDW - DUB

1 stop12h 00mKLM

Deal found 1/5£406

Tue 16/909:50DUB - ORD

2 stops15h 04mAir Canada

Mon 29/912:00ORD - DUB

2 stops13h 45mAir Canada

Deal found 30/4£409

Fri 24/1012:40DUB - ORD

1 stop33h 30mScandinavian Airlines

Mon 3/1119:20ORD - DUB

2 stops33h 25mScandinavian Airlines

Deal found 1/5£409

Thu 11/911:35DUB - ORD

Nonstop8h 00mLufthansa

Wed 17/918:30ORD - DUB

1 stop16h 25mLufthansa

Deal found 29/4£411

Thu 9/1009:30DUB - ORD

1 stop14h 25mAmerican Airlines

Tue 14/1022:35ORD - DUB

1 stop12h 30mAmerican Airlines

Deal found 1/5£415

Sat 13/908:35DUB - ORD

1 stop13h 20mBritish Airways

Wed 1/1021:15ORD - DUB

1 stop14h 15mBritish Airways

Deal found 30/4£419

Fri 11/712:15DUB - ORD

1 stop15h 00mIcelandair

Mon 14/722:15ORD - DUB

1 stop30h 50mIcelandair

Deal found 30/4£465

Fri 11/711:35DUB - ORD

Nonstop8h 25mAer Lingus

Sun 13/715:45ORD - DUB

Nonstop7h 25mAer Lingus

Deal found 30/4£479

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 1 May 2025.

Tue 16/913:45DUB - ORD

Nonstop8h 00mFinnair

Mon 29/922:20ORD - DUB

Nonstop7h 20mFinnair

Deal found 1/5£404

Sun 18/511:35DUB - ORD

Nonstop8h 00mUnited Airlines

Mon 26/520:15ORD - DUB

Nonstop7h 30mUnited Airlines

Deal found 1/5£405

Sat 20/911:35DUB - ORD

Nonstop8h 25mAer Lingus

Sat 4/1021:15ORD - DUB

Nonstop7h 25mAer Lingus

Deal found 1/5£412

Mon 2/611:35DUB - ORD

Nonstop8h 00mMultiple Airlines

Mon 30/620:15ORD - DUB

Nonstop7h 30mMultiple Airlines

Deal found 1/5£485

Thu 3/713:45DUB - ORD

Nonstop8h 00mAmerican Airlines

Sun 13/722:20ORD - DUB

Nonstop7h 20mAmerican Airlines

Deal found 1/5£492

Sat 20/913:45DUB - ORD

Nonstop8h 00mIberia

Sat 4/1022:20ORD - DUB

Nonstop7h 20mIberia

Deal found 30/4£510

Thu 9/1011:35DUB - ORD

Nonstop8h 00mBrussels Airlines

Tue 14/1020:20ORD - DUB

Nonstop7h 25mBrussels Airlines

Deal found 30/4£590

Last-minute flights from Ireland to Chicago
Discover last-minute flight deals from Ireland to Chicago. Data last updated 1 May 2025 and is based on user searches.

Sat 3/508:35DUB - ORD

1 stop13h 20mBritish Airways

Tue 13/520:30ORD - DUB

1 stop12h 15mBritish Airways

Deal found 30/4£517

Tue 6/511:35DUB - ORD

Nonstop8h 25mAer Lingus

Tue 13/521:15ORD - DUB

Nonstop7h 25mAer Lingus

Deal found 29/4£519

Wed 7/511:00DUB - MDW

1 stop16h 28mKLM

Sun 11/513:55MDW - DUB

1 stop12h 00mKLM

Deal found 30/4£413

Wed 7/511:35DUB - ORD

Nonstop8h 00mMultiple Airlines

Wed 14/515:50ORD - DUB

1 stop10h 25mMultiple Airlines

Deal found 30/4£2,244

Thu 8/505:55DUB - ORD

2 stops14h 33mDelta

Wed 14/511:03ORD - DUB

1 stop14h 52mDelta

Deal found 1/5£398

Thu 8/508:55DUB - MDW

2 stops14h 50mDelta

Tue 13/516:15MDW - DUB

1 stop10h 30mDelta

Deal found 1/5£398

Thu 8/518:40DUB - ORD

2 stops23h 20mSWISS

Wed 14/519:05ORD - DUB

1 stop35h 05mSWISS

Deal found 30/4£438

Thu 8/511:45DUB - ORD

2 stops36h 40mScandinavian Airlines

Wed 14/510:05ORD - DUB

2 stops19h 45mScandinavian Airlines

Deal found 1/5£787

Thu 8/514:15DUB - MDW

2 stops13h 45mMultiple Airlines

Wed 14/516:20MDW - DUB

2 stops14h 55mMultiple Airlines

Deal found 30/4£988

Thu 8/505:30DUB - ORD

2 stops32h 30mTAP AIR PORTUGAL

Wed 14/516:03ORD - DUB

2 stops20h 02mTAP AIR PORTUGAL

Deal found 30/4£1,606

Fri 9/511:35DUB - ORD

Nonstop8h 00mUnited Airlines

Mon 12/520:15ORD - DUB

Nonstop7h 30mUnited Airlines

Deal found 1/5£404

Fri 9/513:30DUB - ORD

2 stops14h 36mAir Canada

Mon 12/514:00ORD - DUB

2 stops14h 15mAir Canada

Deal found 1/5£550

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 1 May 2025.

Tue 28/1017:00DUB - ORD

1 stop28h 00mTAP AIR PORTUGAL

Deal found 30/4£355

Thu 29/519:05DUB - ORD

1 stop27h 05mScandinavian Airlines

Deal found 29/4£361

Tue 3/611:30DUB - ORD

1 stop16h 24mJetBlue

Deal found 1/5£362

Wed 4/612:15DUB - ORD

1 stop12h 00mIcelandair

Deal found 1/5£370

Wed 11/613:45DUB - ORD

Nonstop8h 00mFinnair

Deal found 30/4£424

Sat 31/520:10DUB - ORD

1 stop25h 45mBritish Airways

Deal found 1/5£441

Mon 23/613:45DUB - ORD

Nonstop8h 00mAer Lingus

Deal found 29/4£450

Tue 1/713:25DUB - ORD

1 stop14h 03mMultiple Airlines

Deal found 30/4£453

Sun 7/905:55DUB - MDW

2 stops18h 08mDelta

Deal found 1/5£480

Sat 6/912:00DUB - MDW

1 stop12h 03mKLM

Deal found 1/5£492

Fri 20/612:50DUB - MDW

2 stops38h 55mWestJet

Deal found 30/4£519

Tue 5/812:50DUB - ORD

2 stops29h 49mWestJet

Deal found 29/4£740

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 23/5

11:10-21:21

2 stops16h 11m

Chicago O'Hare Intl

Sun 25/5

10:31-09:15

1 stop16h 44m

£398

DublinChicago

DUB - MDW

DUBMDW

Dublin

Sun 18/5

05:55-18:45

2 stops18h 50m

Chicago Midway

Mon 26/5

09:20-07:55

1 stop16h 35m

£398

DublinChicago

DUB - ORD

DUBORD

Dublin

Mon 2/6

11:35-13:35

Nonstop8h 00m

Chicago O'Hare Intl

Mon 30/6

18:30-08:15

1 stop31h 45m

£400

DublinChicago

DUB - ORD

DUBORD

Dublin

Tue 16/9

13:45-15:45

Nonstop8h 00m

Chicago O'Hare Intl

Mon 29/9

22:20-11:40

Nonstop7h 20m

£404

DublinChicago

DUB - ORD

DUBORD

Dublin

Sun 18/5

11:35-13:35

Nonstop8h 00m

Chicago O'Hare Intl

Mon 26/5

12:50-07:10

1 stop12h 20m

£405

DublinChicago

DUB - MDW

DUBMDW

Dublin

Sat 24/5

11:00-21:13

1 stop16h 13m

Chicago Midway

Sat 31/5

13:55-07:55

1 stop12h 00m

£406

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 24/10

12:40-16:10

1 stop33h 30m

Chicago O'Hare Intl

Mon 3/11

19:20-10:45

2 stops33h 25m

£409

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 11/9

11:35-13:35

Nonstop8h 00m

Chicago O'Hare Intl

Wed 17/9

18:30-16:55

1 stop16h 25m

£411

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 9/10

09:30-17:55

1 stop14h 25m

Chicago O'Hare Intl

Tue 14/10

22:35-17:05

1 stop12h 30m

£415

DublinChicago

DUB - ORD

DUBORD

Dublin

Sat 13/9

10:55-17:00

1 stop12h 05m

Chicago O'Hare Intl

Thu 2/10

17:00-09:50

1 stop10h 50m

£419

Flights are sorted by cheapest return flights first.

Deals found on 30/4

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 morning. If you’re flexible enough to do this you can expect to save up to 5% 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 Thursday (12 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (11 on average).

Rainfall in Chicago by month

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.

Temperature in Chicago by month

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).

Reviews of airlines servicing Chicago

To help decide which airline to fly from Ireland to Chicago, see what other customers have to say about Delta, KLM and Finnair. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very Good

7,934 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta

8.0

Very Good

7,934 reviews

Delta

8.0

Very Good

7,934 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM

7.8

Good

1,334 reviews

Delta

8.0

Very Good

7,934 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Finnair

7.6

Good

1,275 reviews

Delta

8.0

Very Good

7,934 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

SWISS

7.5

Good

1,588 reviews

Delta

8.0

Very Good

7,934 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Air France

7.4

Good

1,446 reviews

Delta

8.0

Very Good

7,934 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

What are the cheapest airlines to fly from Ireland to Chicago one-way?
£355 is the cheapest one-way deal found within the past few days, from TAP AIR PORTUGAL. You may also be able to find cheap deals on Scandinavian Airlines and JetBlue, with prices starting from £361 and £362, respectively.
What are the most reliable airlines from Ireland to Chicago?
The top 3 most reliable airlines when flying from Ireland to Chicago are Aer Lingus (88%), American Airlines (82%) and British Airways (82%).
What are the cheapest flights from Ireland to Chicago?
The cheapest flight price from Ireland to Chicago is £375. On average you can expect to pay £1,136. The most popular route, (Dublin - Chicago O'Hare Intl), can usually be booked for £391.
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

London City to O'Hare Intl flights

Heathrow to Midway flights

Stansted to O'Hare Intl flights

Edinburgh to O'Hare Intl flights

Heathrow to St. Louis flights

Luton to O'Hare Intl flights

Gatwick to St. Louis flights

Manchester to O'Hare Intl flights

Edinburgh to Midway flights

Manchester to Midway flights

Birmingham to O'Hare Intl flights

London City to St. Louis flights

Liverpool to O'Hare Intl flights

Bruxelles-National to O'Hare Intl flights

Birmingham to Midway flights

London City to Midway flights

Gatwick to Midway flights

Inverness to O'Hare Intl flights

Newcastle upon Tyne to O'Hare Intl flights

Exeter to O'Hare Intl flights

Stansted to St. Louis flights

Manchester to St. Louis flights

Bristol to O'Hare Intl flights

Bristol to Midway flights

Leeds to O'Hare Intl flights

Southampton to O'Hare Intl flights

Heathrow to Moline flights

Belfast Intl to O'Hare Intl flights

Belfast City to O'Hare Intl flights

Amsterdam to O'Hare Intl flights

Glasgow Intl to O'Hare Intl flights

Glasgow Intl to Midway flights

Madrid to O'Hare Intl flights

Southampton to Midway flights

Newcastle upon Tyne to Midway flights

Luton to St. Louis flights

Leeds to Midway flights

Dublin to O'Hare Intl flights

Cardiff to O'Hare Intl flights

Istanbul to O'Hare Intl flights

Birmingham to St. Louis flights

Gatwick to Evansville flights

Heathrow to Evansville flights

Cardiff to Midway flights

Dublin to Midway flights

Edinburgh to St. Louis flights

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Top 8 airlines flying from Ireland to Chicago

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	Cheapest£259	Average£430	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
British Airways	Cheapest£290	Average£438	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
United Airlines	Cheapest£293	Average£536	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
KLM	Cheapest£303	Average£452	FlexibilityNo cancel fee	On-time75%	Search KLM flights
Aer Lingus	Cheapest£309	Average£436	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
American Airlines	Cheapest£368	Average£494	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
Finnair	Cheapest£370	Average£551	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
Iberia	Cheapest£378	Average£567	FlexibilityNo cancel fee	On-time77%	Search Iberia 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 £355

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 28/10. 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 1 May 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Ireland to Chicago

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 1 May 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 1 May 2025.

Cheapflights Fare Finder

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.

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?

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 1 May 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 1 May 2025.

Rainfall in Chicago by month

Plan your trip to Chicago by taking into account the average rainfall totals by month.

Temperature in Chicago by month

Plan your trip to Chicago by taking into account the average temperature totals by month.

Reviews of airlines servicing Chicago

Get insights into the airlines that provide service to Chicago. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Chicago. Reviews last updated 1 May 2025.

To help decide which airline to fly from Ireland to Chicago, see what other customers have to say about Delta, KLM and Finnair. Users have also rated airlines 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.

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

See prices for flight routes from nearby airports that may be better suited for you.

Top 8 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 1 May 2025.