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$437+ Cheap flights from Ireland to Chicago (CHI)

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 2/16. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — CHI
Jan 20 — Jan 271
Tue 1/20
Tue 1/27
1 adult, Economy
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Cheap 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 December 21, 2025.

This American Airlines deal was found by Cheapflights users on 12/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2610:45 amDUB - ORD
1 stop12h 15mAmerican Airlines
Thu 1/19:00 amORD - DUB
1 stop16h 10mAmerican Airlines
Deal found 12/19$543
This Gotogate deal was found by Cheapflights users on 12/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/248:45 amDUB - ORD
1 stop12h 40mBritish Airways
Thu 1/18:40 pmORD - DUB
1 stop11h 30mBritish Airways
Deal found 12/20$660
This British Airways deal was found by Cheapflights users on 12/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/247:35 amDUB - ORD
1 stop13h 50mBritish Airways
Thu 2/58:45 pmORD - DUB
1 stop12h 55mBritish Airways
Deal found 12/19$668
This Kiwi.com deal was found by Cheapflights users on 12/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2411:30 amDUB - ORD
Nonstop8h 30mAer Lingus
Thu 1/17:40 pmORD - DUB
Nonstop7h 20mAer Lingus
Deal found 12/19$684
This Finnair deal was found by Cheapflights users on 12/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2411:30 amDUB - ORD
1 stop11h 49mMultiple Airlines
Thu 1/14:51 pmORD - DUB
1 stop9h 49mMultiple Airlines
Deal found 12/19$693
This Gotogate deal was found by Cheapflights users on 12/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/237:35 amDUB - ORD
1 stop13h 50mBritish Airways
Wed 12/318:40 pmORD - DUB
1 stop10h 55mBritish Airways
Deal found 12/20$698
This British Airways deal was found by Cheapflights users on 12/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/237:35 amDUB - ORD
1 stop13h 50mBritish Airways
Thu 1/86:25 pmORD - DUB
1 stop10h 50mBritish Airways
Deal found 12/19$703
This oojo deal was found by Cheapflights users on 12/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/234:35 pmDUB - ORD
2 stops30h 10mScandinavian Airlines
Thu 1/87:20 pmORD - DUB
1 stop32h 05mScandinavian Airlines
Deal found 12/19$713
This Delta deal was found by Cheapflights users on 12/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/268:50 amDUB - ORD
1 stop11h 30mDelta
Thu 1/17:00 amORD - DUB
2 stops19h 05mDelta
Deal found 12/19$715
This Delta deal was found by Cheapflights users on 12/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/248:50 amDUB - ORD
1 stop11h 30mDelta
Thu 2/510:35 amORD - DUB
2 stops20h 05mDelta
Deal found 12/19$723
This Delta deal was found by Cheapflights users on 12/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/245:55 amDUB - MDW
2 stops17h 31mDelta
Thu 2/510:48 amMDW - DUB
2 stops15h 57mDelta
Deal found 12/19$726
This Delta deal was found by Cheapflights users on 12/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/245:55 amDUB - MDW
2 stops17h 31mDelta
Thu 1/111:48 amMDW - DUB
1 stop13h 57mDelta
Deal found 12/20$755

Find flight deals from Ireland to Chicago

Keep the following information in mind while searching for Ireland to Chicago flight deals. Data was last updated December 21, 2025.

Round-trip from

$474
(Mytrip)

One-way from

$437
(Kiwi.com)

Popular in

July

Cheapest in

September

Average price

$545

Good round-trip deal

$645 or less

Good one-way deal

$485 or less
From Ireland to Chicago (CHI)
Search Deals
One-way flight from Ireland to Chicago (CHI)
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($101 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 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

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ireland to Chicago that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 21, 2025.
Use the filters below to find and compare flights from Ireland to Chicago that are best for you.

Fly from

Ireland

Fly to

Chicago

Route

Depart

Return

Price

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 2/4

7:05 pm-4:45 pm

1 stop27h 40m

Chicago O'Hare Intl

Sun 2/8

7:10 pm-6:20 pm

1 stop17h 10m

$479

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 2/12

12:30 pm-4:45 pm

1 stop34h 15m

Chicago O'Hare Intl

Thu 2/26

7:20 pm-6:20 pm

1 stop17h 00m

$479

DublinChicago

DUB - ORD

DUBORD

Dublin

Sun 2/22

12:05 pm-4:45 pm

2 stops34h 40m

Chicago O'Hare Intl

Wed 3/4

7:20 pm-6:20 pm

1 stop17h 00m

$484

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 1/15

11:30 am-4:45 pm

2 stops35h 15m

Chicago O'Hare Intl

Thu 1/22

7:20 pm-6:20 pm

1 stop17h 00m

$489

DublinChicago

DUB - ORD

DUBORD

Dublin

Sun 3/1

10:10 am-4:45 pm

1 stop12h 35m

Chicago O'Hare Intl

Wed 3/11

8:20 pm-10:45 am

2 stops33h 25m

$493

CorkChicago

ORK - ORD

ORKORD

Cork

Sat 1/17

6:00 am-2:20 pm

1 stop14h 20m

Chicago O'Hare Intl

Thu 1/22

5:35 pm-2:45 pm

2 stops15h 10m

$531

CorkChicago

ORK - ORD

ORKORD

Cork

Sat 1/17

6:00 am-2:20 pm

1 stop14h 20m

Chicago O'Hare Intl

Thu 1/22

5:20 pm-2:45 pm

1 stop15h 25m

$531

DublinChicago

DUB - MDW

DUBMDW

Dublin

Tue 2/3

5:55 am-6:36 pm

2 stops18h 41m

Chicago Midway

Tue 2/10

1:26 pm-3:45 pm

2 stops20h 19m

$533

DublinChicago

DUB - MDW

DUBMDW

Dublin

Thu 1/15

5:55 am-5:34 pm

2 stops17h 39m

Chicago Midway

Thu 1/22

6:35 pm-3:45 pm

2 stops15h 10m

$533

DublinChicago

DUB - MDW

DUBMDW

Dublin

Fri 1/16

5:55 am-5:37 pm

2 stops17h 42m

Chicago Midway

Thu 1/22

6:35 pm-3:45 pm

2 stops15h 10m

$533

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/21

Showing 1-10 of 48 results
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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 round-trip 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, February is the cheapest month in which you can book a flight from Ireland to Chicago (average of $385). Flying from Ireland to Chicago in July is currently the most expensive (average of $636). 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?

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 December 21, 2025.

It’s optimal to fly from Ireland to Chicago in the evening. By choosing this option you can save up to 26% on the cost of your flight, compared to a flight in the morning.

How often are flights from Ireland to Chicago delayed?

About 12% of weekly flights between Ireland and Chicago have experienced delays in the past year, with the average delay time being 140 minutes.

What is the most punctual flight time for Ireland to Chicago flights?

Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Thursday tends to have the lowest number of delays on this route, whereas Tuesday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Ireland to Chicago flights?

Over the last year, Aer Lingus have had the lowest number of delays on this route, with just 7% of flights being delayed.

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 December 21, 2025.
Read through reviews of airlines operating flights from Ireland to Chicago, such as United Airlines and Aer Lingus. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,100 reviews

Crew

8.1

Food

6.6

Overall

7.4

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
United Airlines
7.4
Good
9,100 reviews
United Airlines
7.4
Good
9,100 reviews

Crew

8.1

Food

6.6

Overall

7.4

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
Aer Lingus
7.2
Good
1,406 reviews
United Airlines
7.4
Good
9,100 reviews

Crew

8.1

Food

6.6

Overall

7.4

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.

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?

    For as low as $531, Scandinavian Airlines can have you in Chicago from Ireland in 14h 20m. The distance between Ireland and Chicago is about 3617 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    One-way options have recently been found by users for as low as $342 on Icelandair. Other airlines that offer cheap prices include Aer Lingus from $418 and Brussels Airlines from $426 one-way.

  • What are the most popular routes from Ireland to Chicago?

    When deciding which route to take from Ireland to Chicago consider Dublin - Chicago O'Hare Intl, Dublin - Chicago Midway or Cork - Chicago Midway as they are the most popular.

  • What are the most reliable airlines from Ireland to Chicago?

    Before booking your flight to Chicago from Ireland, check out the most reliable airlines to get you to your destination on time: Iberia (81%), American Airlines (80%), British Airways( 79%).

  • What are the cheapest flights from Ireland to Chicago?

    While on average a flight from Ireland to Chicago is generally $1,123, our data shows the cheapest flight currently is $437. When looking at the most popular route, (Dublin - Chicago O'Hare Intl), you can expect to pay $451 for that 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 vacation 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, February is the cheapest month in which you can book a flight from Ireland to Chicago (average of $385). Flying from Ireland to Chicago in July is currently the most expensive (average of $636). 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

Traveling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Lansing
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Hammond
Porter
Benton Harbor

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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.
Frankfurt to O'Hare Intl flights
Frederic Chopin to O'Hare Intl flights
Charles de Gaulle to O'Hare Intl flights
Heathrow to O'Hare Intl flights
Frederic Chopin to Midway flights
Orly to O'Hare Intl flights
Munich to O'Hare Intl flights
Charles de Gaulle to Midway flights
Frankfurt to St. Louis flights
Zurich to O'Hare Intl flights
Istanbul to O'Hare Intl flights
Madrid to O'Hare Intl flights
Krakow to O'Hare Intl flights
Beauvais-Tille to O'Hare Intl flights
Dublin to O'Hare Intl flights
Gatwick to O'Hare Intl flights
Bruxelles-National to O'Hare Intl flights
Amsterdam to O'Hare Intl flights
Vienna to O'Hare Intl flights
London City to O'Hare Intl flights
Heathrow to Midway flights
Madrid to Midway flights
Duesseldorf Intl to O'Hare Intl flights
Modlin to O'Hare Intl flights
Barcelona-El Prat to O'Hare Intl flights
Athens to O'Hare Intl flights
Malpensa to O'Hare Intl flights
Frankfurt-Hahn to O'Hare Intl flights
Stansted to O'Hare Intl flights
Leonardo da Vinci/Fiumicino to O'Hare Intl flights
Barcelona-El Prat to Midway flights
Luton to O'Hare Intl flights
Sofia to O'Hare Intl flights
Munich to Midway flights
Duesseldorf Intl to Midway flights
Bergamo to O'Hare Intl flights
Amsterdam to Midway flights
Linate to O'Hare Intl flights
Bruxelles-National to Midway flights
Berlin to O'Hare Intl flights
Belgrade to O'Hare Intl flights
Sabiha Gokcen to O'Hare Intl flights
Basel to O'Hare Intl flights
Lisbon to O'Hare Intl flights

Top 4 airlines flying from Ireland to Chicago

Discover the top 4 airlines that operate flights from Ireland to Chicago. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$388Average$585FlexibilityNo cancel feeOn-time76%
LufthansaCheapest$411Average$543FlexibilityNo cancel feeOn-time76%
Aer LingusCheapest$455Average$636FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$479Average$680FlexibilityNo cancel feeOn-time69%

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