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$365+ 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 9/23. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — CHI
Aug 17 — Aug 241
Mon 8/17
Mon 8/24
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 July 18, 2026.

This Gotogate deal was found by Cheapflights users on 7/15. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/208:05 pm
SNN
-
ORD
1 stop23h 40m
Multiple Airlines
Wed 12/305:10 pm
ORD
-
SNN
1 stop12h 20m
Multiple Airlines
Deal found 7/15$538
This Delta deal was found by Cheapflights users on 7/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/36:15 am
ORK
-
ORD
1 stop14h 00m
Delta
Mon 9/75:20 pm
ORD
-
ORK
2 stops15h 20m
Delta
Deal found 7/14$603
This Delta deal was found by Cheapflights users on 7/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/36:15 am
ORK
-
ORD
1 stop14h 00m
Delta
Tue 9/85:10 pm
ORD
-
ORK
1 stop15h 30m
Delta
Deal found 7/15$604
This Scandinavian Airlines deal was found by Cheapflights users on 7/14. 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 9/237:05 pm
DUB
-
ORD
1 stop27h 05m
Scandinavian Airlines
Fri 10/237:15 pm
ORD
-
DUB
2 stops34h 00m
Scandinavian Airlines
Deal found 7/14$608
This Mytrip deal was found by Cheapflights users on 7/13. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/269:40 am
DUB
-
ORD
2 stops16h 12m
Multiple Airlines
Sun 8/307:25 pm
ORD
-
DUB
2 stops20h 40m
Multiple Airlines
Deal found 7/13$609
This Delta deal was found by Cheapflights users on 7/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/235:55 am
DUB
-
ORD
2 stops16h 19m
Delta
Fri 10/25:10 pm
ORD
-
DUB
1 stop16h 15m
Delta
Deal found 7/14$610
This Delta deal was found by Cheapflights users on 7/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/35:55 am
DUB
-
MDW
2 stops18h 38m
Delta
Thu 9/105:45 pm
MDW
-
DUB
2 stops15h 40m
Delta
Deal found 7/14$610
This British Airways deal was found by Cheapflights users on 7/13. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/279:30 am
DUB
-
ORD
Nonstop8h 00m
British Airways
Mon 8/3110:30 pm
ORD
-
DUB
1 stop14h 10m
British Airways
Deal found 7/13$611
This Finnair deal was found by Cheapflights users on 7/15. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/269:30 am
DUB
-
ORD
Nonstop8h 00m
Finnair
Mon 8/3110:20 pm
ORD
-
DUB
Nonstop7h 30m
Finnair
Deal found 7/15$612
This Finnair deal was found by Cheapflights users on 7/13. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/269:30 am
DUB
-
ORD
Nonstop8h 00m
Finnair
Sun 8/3010:20 pm
ORD
-
DUB
Nonstop7h 30m
Finnair
Deal found 7/13$613
This Delta deal was found by Cheapflights users on 7/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/238:55 am
DUB
-
MDW
2 stops15h 24m
Delta
Fri 10/29:29 am
MDW
-
DUB
1 stop17h 46m
Delta
Deal found 7/14$613
This KLM deal was found by Cheapflights users on 7/15. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/36:15 am
ORK
-
MDW
2 stops18h 18m
KLM
Mon 9/71:19 pm
MDW
-
ORK
2 stops15h 01m
KLM
Deal found 7/15$613

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 July 18, 2026.

Round-trip from

$538
(Gotogate)

One-way from

$365
(Kiwi.com)

Popular in

August

Cheapest in

November

Average price

$795

Good round-trip deal

$734 or less

Good one-way deal

$692 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. 15% potential increase in price ($115 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($21 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 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 July 18, 2026.
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

Cheapest round-trip

CorkChicago

ORK - ORD

ORKORD

Cork

Thu 9/3

6:15 am-2:15 pm

1 stop14h 00m

Chicago O'Hare Intl

Mon 9/7

5:20 pm-2:40 pm

2 stops15h 20m

$603

CorkChicago

ORK - ORD

ORKORD

Cork

Thu 9/3

6:15 am-2:15 pm

1 stop14h 00m

Chicago O'Hare Intl

Tue 9/8

1:55 pm-2:40 pm

2 stops18h 45m

$604

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 9/24

5:55 am-6:26 pm

2 stops18h 31m

Chicago O'Hare Intl

Sat 10/24

2:00 pm-3:10 pm

2 stops19h 10m

$610

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 9/23

7:05 pm-4:10 pm

1 stop27h 05m

Chicago O'Hare Intl

Thu 10/22

7:15 pm-7:15 pm

2 stops42h 00m

$611

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 8/27

9:30 am-11:30 am

Nonstop8h 00m

Chicago O'Hare Intl

Mon 8/31

10:30 pm-7:35 pm

1 stop15h 05m

$611

CorkChicago

ORK - MDW

ORKMDW

Cork

Thu 9/3

6:15 am-6:33 pm

2 stops18h 18m

Chicago Midway

Mon 9/7

1:19 pm-10:20 am

2 stops15h 01m

$613

DublinChicago

DUB - ORD

DUBORD

Dublin

Tue 9/22

5:55 am-2:15 pm

1 stop14h 20m

Chicago O'Hare Intl

Tue 11/10

1:35 pm-2:30 pm

2 stops18h 55m

$613

DublinChicago

DUB - MDW

DUBMDW

Dublin

Fri 10/2

5:55 am-6:33 pm

2 stops18h 38m

Chicago Midway

Sat 10/10

4:25 pm-8:45 am

1 stop10h 20m

$613

DublinChicago

DUB - MDW

DUBMDW

Dublin

Thu 11/5

5:45 am-6:05 pm

2 stops18h 20m

Chicago Midway

Tue 11/10

6:30 pm-2:30 pm

2 stops14h 00m

$613

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 10/7

5:55 am-4:40 pm

2 stops16h 45m

Chicago O'Hare Intl

Mon 10/12

12:33 pm-7:55 am

1 stop13h 22m

$614

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/15

Showing 1-10 of 60 resultsSorted by cheapest first
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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, November is the cheapest month in which you can book a flight from Ireland to Chicago (average of $476). Flying from Ireland to Chicago in August is currently the most expensive (average of $874). 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 July 18, 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 July 18, 2026.

The most flights from IE0 to CHI are scheduled on a Monday (20 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (18 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 150 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?

Wednesday 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 8% of flights being delayed.

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

The best time to book flights from Ireland to Chicago is 47 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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 July 18, 2026.
Read through reviews of airlines operating flights from Ireland to Chicago, such as Aer Lingus. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Aer Lingus
7.3
Good
1,671 reviews

Overall

7.3

Crew

8.1

Food

6.6

Entertainment

7.0

Boarding

7.4

Comfort

7.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,May 2026

DUB - EWR

Underpricer is a terrible organization that inserted itself as a “travel agent” simply by way of me booking on kayak. Never would I have willing assented to using underpricer. Further, we had a problem whereby two duplicate one-way flights from Dublin were inadvertently booked for me and my wife, stemming from a family emergency. My wife’s sister / my sister in law had a brain tumor and immediate surgery to remove it, which obviously impacted our previously planned travel arrangements. I tried to cancel the flight due to the extenuating circumstances. Underpricer said canceling was not possible, but a credit would be possible for the exact same flight - one way from Dublin - to be used in one year from the original flight date. I asked if it would be possible to make the credit a general credit to any participating AerLingus airport destination, which would allow more flexibility than having to go back to Ireland within a year. In order to pursue the credit, Underpricer requested documentary proof regarding my sister in laws brain tumor, which we gave them. Underpricer then asked us to document our relationship to the patient - so I gave them my marriage certificate to evidence my wife and her sister having the same last name. Underpricer asked for further proof, so we gave them copies of my passport, my wife’s passport, and my sister in laws passport. All of these hoops to jump through for Underpricer, with sporadic communication on their part throughout, only for them to say 3 days before the original booking that no credit was available - not even the one they originally offered. They said my only option was to pick a date within the next year to move the flight to - and of course to make that change, they charged me an additional $350 fee just to make that change. What a pathetic, fraudulent organization. Kayak should be embarrassed to be associated with Underpricer and should cease that relationship immediately. And for AerLingus, who only Underpricer could talk to regarding the booking (I was not permitted) to not understand our family’s situation and just stand by blanket policy that no credit is permitted, is equally disappointing.
Aer Lingus
7.3
Good
1,671 reviews
Aer Lingus
7.3
Good
1,671 reviews

Overall

7.3

Crew

8.1

Food

6.6

Entertainment

7.0

Boarding

7.4

Comfort

7.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,May 2026

DUB - EWR

Underpricer is a terrible organization that inserted itself as a “travel agent” simply by way of me booking on kayak. Never would I have willing assented to using underpricer. Further, we had a problem whereby two duplicate one-way flights from Dublin were inadvertently booked for me and my wife, stemming from a family emergency. My wife’s sister / my sister in law had a brain tumor and immediate surgery to remove it, which obviously impacted our previously planned travel arrangements. I tried to cancel the flight due to the extenuating circumstances. Underpricer said canceling was not possible, but a credit would be possible for the exact same flight - one way from Dublin - to be used in one year from the original flight date. I asked if it would be possible to make the credit a general credit to any participating AerLingus airport destination, which would allow more flexibility than having to go back to Ireland within a year. In order to pursue the credit, Underpricer requested documentary proof regarding my sister in laws brain tumor, which we gave them. Underpricer then asked us to document our relationship to the patient - so I gave them my marriage certificate to evidence my wife and her sister having the same last name. Underpricer asked for further proof, so we gave them copies of my passport, my wife’s passport, and my sister in laws passport. All of these hoops to jump through for Underpricer, with sporadic communication on their part throughout, only for them to say 3 days before the original booking that no credit was available - not even the one they originally offered. They said my only option was to pick a date within the next year to move the flight to - and of course to make that change, they charged me an additional $350 fee just to make that change. What a pathetic, fraudulent organization. Kayak should be embarrassed to be associated with Underpricer and should cease that relationship immediately. And for AerLingus, who only Underpricer could talk to regarding the booking (I was not permitted) to not understand our family’s situation and just stand by blanket policy that no credit is permitted, is equally disappointing.

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 $611, Delta 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 $290 on Icelandair. Other airlines that offer cheap prices include Finnair from $419 and Aer Lingus from $452 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, Shannon - Chicago O'Hare Intl or Dublin - 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: Alaska Airlines (89%), Finnair (89%), Iberia( 82%).

  • What are the cheapest flights from Ireland to Chicago?

    While on average a flight from Ireland to Chicago is generally $1,456, our data shows the cheapest flight currently is $634. When looking at the most popular route, (Dublin - Chicago O'Hare Intl), you can expect to pay $432 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, November is the cheapest month in which you can book a flight from Ireland to Chicago (average of $476). Flying from Ireland to Chicago in August is currently the most expensive (average of $874). 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
Benton Harbor
Lansing
Merrillville
Valparaiso
Hammond
Saint Joseph
Porter

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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 July 18, 2026.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$463Average$658FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$473Average$680FlexibilityNo cancel feeOn-time69%

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