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$367+ 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 10/14. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — CHI
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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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 September 15, 2025.

Round-trip from

$443
(TravelUp)

One-way from

$367
(Kiwi.com)

Popular in

July

Cheapest in

January

Average price

$509

Good round-trip deal

$553 or less

Good one-way deal

$574 or less
From Ireland to Chicago (CHI)
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One-way flight from Ireland to Chicago (CHI)
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Highest demand for flights based on searches. 14% potential increase in price ($102 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Ireland to Chicago (CHI).
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Price to beat on a one-way flight from Ireland to Chicago (CHI).
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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 September 15, 2025.

This Scandinavian Airlines deal was found by Cheapflights users on 9/14. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2911:30 amDUB - ORD
2 stops36h 15mScandinavian Airlines
Sun 11/27:20 pmORD - DUB
2 stops18h 15mScandinavian Airlines
Deal found 9/14$447
This Kiwi.com deal was found by Cheapflights users on 9/14. 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.
Thu 10/235:55 amDUB - ORD
1 stop13h 00mLufthansa
Mon 11/39:50 pmORD - DUB
1 stop13h 20mLufthansa
Deal found 9/14$448
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 10/2911:45 amDUB - ORD
1 stop14h 20mLufthansa
Sun 11/29:50 pmORD - DUB
1 stop13h 20mLufthansa
Deal found 9/14$451
This American Airlines deal was found by Cheapflights users on 9/14. 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.
Sat 11/110:55 amDUB - ORD
1 stop11h 50mAmerican Airlines
Sat 11/88:40 pmORD - DUB
1 stop11h 35mAmerican Airlines
Deal found 9/14$453
This lastminute.com deal was found by Cheapflights users on 9/13. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1311:35 amDUB - ORD
Nonstop8h 25mAer Lingus
Mon 10/203:45 pmORD - DUB
Nonstop7h 25mAer Lingus
Deal found 9/13$454
This Lufthansa deal was found by Cheapflights users on 9/15. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/25:10 amDUB - ORD
1 stop20h 55mLufthansa
Sun 11/96:35 pmORD - DUB
Nonstop7h 35mLufthansa
Deal found 9/15$455
This Expedia deal was found by Cheapflights users on 9/13. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/285:00 amDUB - ORD
1 stop16h 20mMultiple Airlines
Tue 11/46:50 pmORD - DUB
1 stop16h 55mMultiple Airlines
Deal found 9/13$456
This Lufthansa deal was found by Cheapflights users on 9/15. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/315:10 amDUB - ORD
1 stop16h 10mMultiple Airlines
Tue 11/46:50 pmORD - DUB
1 stop16h 55mMultiple Airlines
Deal found 9/15$457
This Travelocity deal was found by Cheapflights users on 9/14. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/165:55 amDUB - ORD
1 stop13h 00mLufthansa
Thu 10/238:20 pmORD - DUB
Nonstop7h 25mLufthansa
Deal found 9/14$458
This Lufthansa deal was found by Cheapflights users on 9/13. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/135:55 amDUB - ORD
1 stop13h 00mLufthansa
Mon 10/208:20 pmORD - DUB
Nonstop7h 25mLufthansa
Deal found 9/13$459
This American Airlines deal was found by Cheapflights users on 9/14. 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.
Wed 12/1711:30 amDUB - ORD
1 stop14h 56mAmerican Airlines
Tue 1/66:45 pmORD - DUB
1 stop32h 55mAmerican Airlines
Deal found 9/14$460
This British Airways deal was found by Cheapflights users on 9/14. 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 11/118:50 amDUB - ORD
2 stops18h 00mBritish Airways
Tue 11/1811:48 amORD - DUB
2 stops15h 47mBritish Airways
Deal found 9/14$461

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 September 15, 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 10/29

11:30 am-6:45 pm

2 stops36h 15m

Chicago O'Hare Intl

Sun 11/2

7:20 pm-7:35 pm

2 stops18h 15m

$447

DublinChicago

DUB - ORD

DUBORD

Dublin

Sun 12/21

7:25 pm-1:50 pm

1 stop24h 25m

Chicago O'Hare Intl

Sun 1/4

8:45 pm-9:50 am

1 stop31h 05m

$455

DublinChicago

DUB - ORD

DUBORD

Dublin

Mon 11/3

5:10 am-1:10 pm

1 stop14h 00m

Chicago O'Hare Intl

Sun 11/9

6:35 pm-8:10 am

Nonstop7h 35m

$455

DublinChicago

DUB - ORD

DUBORD

Dublin

Sat 11/22

5:10 am-3:20 pm

1 stop16h 10m

Chicago O'Hare Intl

Mon 11/24

6:35 pm-8:10 am

Nonstop7h 35m

$455

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 10/31

5:10 am-4:20 pm

1 stop16h 10m

Chicago O'Hare Intl

Tue 11/4

6:50 pm-5:45 pm

1 stop16h 55m

$457

DublinChicago

DUB - ORD

DUBORD

Dublin

Sun 11/2

5:10 am-9:05 pm

1 stop20h 55m

Chicago O'Hare Intl

Sun 11/9

6:50 pm-5:45 pm

1 stop16h 55m

$457

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 10/29

5:55 am-3:20 pm

1 stop14h 25m

Chicago O'Hare Intl

Tue 11/4

5:20 pm-3:45 pm

1 stop16h 25m

$460

DublinChicago

DUB - ORD

DUBORD

Dublin

Sun 10/26

5:55 am-3:20 pm

1 stop14h 25m

Chicago O'Hare Intl

Sun 11/16

5:20 pm-3:45 pm

1 stop16h 25m

$460

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 11/12

8:50 am-8:50 pm

2 stops18h 00m

Chicago O'Hare Intl

Sun 11/16

8:40 pm-3:05 pm

1 stop12h 25m

$461

DublinChicago

DUB - ORD

DUBORD

Dublin

Tue 11/11

10:55 am-8:50 pm

2 stops15h 55m

Chicago O'Hare Intl

Mon 11/17

11:48 am-9:50 am

2 stops16h 02m

$461

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

Showing 1-10 of 60 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, August is the cheapest month in which you can book a flight from Ireland to Chicago (average of $245). Flying from Ireland to Chicago in March is currently the most expensive (average of $321). 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 September 15, 2025.

It’s optimal to fly from Ireland to Chicago in the afternoon. By choosing this option you can save up to 12% on the cost of your flight, compared to a flight at noon.

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 September 15, 2025.

The most flights from IE0 to CHI are scheduled on a Saturday (20 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

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 September 15, 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
8,929 reviews

Crew

8.1

Boarding

7.7

Comfort

7.3

Overall

7.4

Entertainment

7.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
United Airlines
7.4
Good
8,929 reviews
United Airlines
7.4
Good
8,929 reviews

Crew

8.1

Boarding

7.7

Comfort

7.3

Overall

7.4

Entertainment

7.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
Aer Lingus
7.2
Good
1,270 reviews
United Airlines
7.4
Good
8,929 reviews

Crew

8.1

Boarding

7.7

Comfort

7.3

Overall

7.4

Entertainment

7.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.

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 $469, Scandinavian Airlines can have you in Chicago from Ireland in 18h 30m. The distance between Ireland and Chicago is about 3664 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 Shannon - Chicago O'Hare Intl 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 (83%), American Airlines (75%), Aer Lingus( 75%).

  • What are the cheapest flights from Ireland to Chicago?

    While on average a flight from Ireland to Chicago is generally $1,167, our data shows the cheapest flight currently is $463. When looking at the most popular route, (Dublin - Chicago O'Hare Intl), you can expect to pay $381 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, August is the cheapest month in which you can book a flight from Ireland to Chicago (average of $245). Flying from Ireland to Chicago in March is currently the most expensive (average of $321). 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
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Lansing
Hammond
Benton Harbor
Porter
Chesterton

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

Top 3 airlines flying from Ireland to Chicago

Discover the top 3 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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$393Average$514FlexibilityNo cancel feeOn-time76%
Aer LingusCheapest$463Average$582FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$473Average$752FlexibilityNo cancel feeOn-time69%

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