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$243+ 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 3/12. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — CHI
Mar 8 — Mar 151
Sun 3/8
Sun 3/15
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 February 6, 2026.

This SmartFares deal was found by Cheapflights users on 2/4. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/17:05 pm
DUB
-
ORD
1 stop27h 40m
Scandinavian Airlines
Mon 3/98:20 pm
ORD
-
DUB
1 stop17h 00m
Scandinavian Airlines
Deal found 2/4$411
This Finnair deal was found by Cheapflights users on 2/4. 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 5/139:30 am
DUB
-
ORD
Nonstop8h 00m
Finnair
Tue 5/2610:25 pm
ORD
-
DUB
Nonstop7h 25m
Finnair
Deal found 2/4$444
This Finnair deal was found by Cheapflights users on 2/4. 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.
Fri 5/159:30 am
DUB
-
ORD
Nonstop8h 00m
Finnair
Mon 5/2510:25 pm
ORD
-
DUB
Nonstop7h 25m
Finnair
Deal found 2/4$445
This deal was found by Cheapflights users on 2/3. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/611:30 am
DUB
-
ORD
1 stop11h 50m
Icelandair
Tue 3/177:30 pm
ORD
-
DUB
1 stop9h 45m
Icelandair
Deal found 2/3$448
This Finnair deal was found by Cheapflights users on 2/3. 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 5/138:35 am
DUB
-
ORD
1 stop12h 20m
Multiple Airlines
Tue 5/2610:25 pm
ORD
-
DUB
Nonstop7h 25m
Multiple Airlines
Deal found 2/3$453
This Finnair deal was found by Cheapflights users on 2/3. 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.
Tue 4/79:30 am
DUB
-
ORD
1 stop16h 27m
Multiple Airlines
Mon 4/135:00 pm
ORD
-
DUB
1 stop10h 40m
Multiple Airlines
Deal found 2/3$456
This SmartFares deal was found by Cheapflights users on 2/4. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/17:05 pm
DUB
-
ORD
1 stop27h 40m
Scandinavian Airlines
Sun 3/88:20 pm
ORD
-
DUB
1 stop17h 00m
Scandinavian Airlines
Deal found 2/4$459
This Finnair deal was found by Cheapflights users on 2/3. 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.
Thu 4/99:30 am
DUB
-
ORD
1 stop16h 27m
Multiple Airlines
Tue 4/1410:30 pm
ORD
-
DUB
1 stop14h 20m
Multiple Airlines
Deal found 2/3$461
This SmartFares deal was found by Cheapflights users on 2/3. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/67:05 pm
DUB
-
ORD
1 stop27h 40m
Scandinavian Airlines
Mon 3/98:20 pm
ORD
-
DUB
1 stop17h 00m
Scandinavian Airlines
Deal found 2/3$462
This Finnair deal was found by Cheapflights users on 2/3. 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.
Tue 10/138:35 am
DUB
-
ORD
1 stop15h 00m
Multiple Airlines
Wed 10/2112:03 pm
ORD
-
DUB
1 stop15h 42m
Multiple Airlines
Deal found 2/3$466
This KLM deal was found by Cheapflights users on 2/4. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/55:15 pm
ORK
-
ORD
1 stop27h 05m
Multiple Airlines
Tue 3/105:50 pm
ORD
-
ORK
2 stops16h 10m
Multiple Airlines
Deal found 2/4$535
This KLM deal was found by Cheapflights users on 2/4. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/35:15 pm
ORK
-
ORD
1 stop27h 05m
KLM
Mon 3/96:20 pm
ORD
-
ORK
1 stop15h 40m
KLM
Deal found 2/4$536

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 February 6, 2026.

Round-trip from

$411
(SmartFares)

One-way from

$243
(Trip.com)

Popular in

July

Cheapest in

November

Average price

$559

Good round-trip deal

$686 or less

Good one-way deal

$506 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. 13% potential increase in price ($91 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
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 February 6, 2026.
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

Fri 5/22

9:30 am-11:30 am

Nonstop8h 00m

Chicago O'Hare Intl

Tue 6/2

10:25 pm-11:50 am

Nonstop7h 25m

$445

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 5/13

8:35 am-2:55 pm

1 stop12h 20m

Chicago O'Hare Intl

Tue 5/26

10:25 pm-11:50 am

Nonstop7h 25m

$453

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 5/13

9:30 am-11:30 am

Nonstop8h 00m

Chicago O'Hare Intl

Tue 5/26

10:25 pm-11:50 am

Nonstop7h 25m

$468

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 4/22

9:30 am-7:57 pm

1 stop16h 27m

Chicago O'Hare Intl

Sun 4/26

12:30 pm-9:45 am

1 stop15h 15m

$476

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 5/15

9:40 am-5:50 pm

1 stop14h 10m

Chicago O'Hare Intl

Mon 5/25

10:25 pm-11:50 am

Nonstop7h 25m

$521

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 5/27

9:30 am-11:30 am

Nonstop8h 00m

Chicago O'Hare Intl

Wed 9/16

5:50 pm-1:00 pm

1 stop13h 10m

$523

DublinChicago

DUB - ORD

DUBORD

Dublin

Mon 2/23

8:50 am-2:20 pm

1 stop11h 30m

Chicago O'Hare Intl

Mon 3/2

10:36 am-8:00 am

2 stops15h 24m

$532

CorkChicago

ORK - ORD

ORKORD

Cork

Fri 3/6

5:15 pm-2:20 pm

1 stop27h 05m

Chicago O'Hare Intl

Tue 3/10

5:50 pm-3:00 pm

2 stops16h 10m

$535

CorkChicago

ORK - ORD

ORKORD

Cork

Tue 3/3

5:15 pm-2:20 pm

1 stop27h 05m

Chicago O'Hare Intl

Mon 3/9

6:20 pm-3:00 pm

1 stop15h 40m

$536

DublinChicago

DUB - ORD

DUBORD

Dublin

Sun 3/1

8:50 am-2:20 pm

1 stop11h 30m

Chicago O'Hare Intl

Wed 3/11

10:40 am-8:05 am

2 stops16h 25m

$537

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/4

Showing 1-10 of 60 results
1
2
3
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6

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, March is the cheapest month in which you can book a flight from Ireland to Chicago (average of $400). Flying from Ireland to Chicago in July is currently the most expensive (average of $637). 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 February 6, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ireland to Chicago as you normally would.

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 February 6, 2026.

The most flights from IE0 to CHI are scheduled on a Monday (9 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (5 on average).

How often are flights from Ireland to Chicago delayed?

About 13% of weekly flights between Ireland and Chicago have experienced delays in the past year, with the average delay time being 132 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?

Monday 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 February 6, 2026.
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
9,244 reviews

Food

6.6

Overall

7.4

Comfort

7.3

Crew

8.1

Entertainment

7.1

Boarding

7.7

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
United Airlines
7.4
Good
9,244 reviews
United Airlines
7.4
Good
9,244 reviews

Food

6.6

Overall

7.4

Comfort

7.3

Crew

8.1

Entertainment

7.1

Boarding

7.7

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
Aer Lingus
7.2
Good
1,445 reviews
United Airlines
7.4
Good
9,244 reviews

Food

6.6

Overall

7.4

Comfort

7.3

Crew

8.1

Entertainment

7.1

Boarding

7.7

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats

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 $445, Finnair can have you in Chicago from Ireland in 8h. The distance between Ireland and Chicago is about 3661 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 $351 on Icelandair. Other airlines that offer cheap prices include Aer Lingus from $428 and Iberia from $472 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 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: Austrian Airlines (81%), Brussels Airlines (81%), United Airlines( 81%).

  • What are the cheapest flights from Ireland to Chicago?

    While on average a flight from Ireland to Chicago is generally $1,081, our data shows the cheapest flight currently is $397. When looking at the most popular route, (Dublin - Chicago O'Hare Intl), you can expect to pay $445 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, March is the cheapest month in which you can book a flight from Ireland to Chicago (average of $400). Flying from Ireland to Chicago in July is currently the most expensive (average of $637). 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
Merrillville
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.
Charles de Gaulle to O'Hare Intl flights
Heathrow to O'Hare Intl flights
Madrid to O'Hare Intl flights
Frankfurt to O'Hare Intl flights
Frederic Chopin to O'Hare Intl flights
Barcelona-El Prat to O'Hare Intl flights
Zurich to O'Hare Intl flights
Krakow to O'Hare Intl flights
Istanbul to O'Hare Intl flights
Charles de Gaulle to Midway flights
Heathrow to Midway flights
Orly to O'Hare Intl flights
Gatwick to O'Hare Intl flights
Frederic Chopin to Midway flights
Leonardo da Vinci/Fiumicino to O'Hare Intl flights
London City to O'Hare Intl flights
Amsterdam to O'Hare Intl flights
Bruxelles-National to O'Hare Intl flights
Munich to O'Hare Intl flights
Stansted to O'Hare Intl flights
Vienna to O'Hare Intl flights
Dublin to O'Hare Intl flights
Malpensa to O'Hare Intl flights
Madrid to Midway flights
Beauvais-Tille to O'Hare Intl flights
Barcelona-El Prat to Midway flights
Luton to O'Hare Intl flights
Athens to O'Hare Intl flights
Leonardo da Vinci/Fiumicino to Midway flights
Duesseldorf Intl to O'Hare Intl flights
Belgrade to O'Hare Intl flights
Amsterdam to Midway flights
Berlin to O'Hare Intl flights
Copenhagen to O'Hare Intl flights
Ciampino to O'Hare Intl flights
Sofia to O'Hare Intl flights
Frankfurt-Hahn to O'Hare Intl flights
Gdansk to O'Hare Intl flights
Manchester to O'Hare Intl flights
Modlin to O'Hare Intl flights
Linate to O'Hare Intl flights
Prague to O'Hare Intl flights
Sabiha Gokcen to O'Hare Intl flights
Edinburgh to O'Hare Intl flights

Top 2 airlines flying from Ireland to Chicago

Discover the top 2 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 February 6, 2026.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$466Average$640FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$479Average$680FlexibilityNo cancel feeOn-time69%

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