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$385+ 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 5/13. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — CHI
May 6 — May 131
Tue 5/6
Tue 5/13
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 May 1, 2025.

Round-trip from

$534
(Delta)

One-way from

$427
(Kiwi.com)

Popular in

July

Cheapest in

November

Average price

$573

Good round-trip deal

$691 or less

Good one-way deal

$548 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. 16% potential increase in price ($110 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in May 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 May 1, 2025.

This Delta deal was found by Cheapflights users on 4/30. 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.
Sun 5/185:55 amDUB - ORD
2 stops18h 42mDelta
Mon 5/266:30 pmORD - DUB
1 stop10h 15mDelta
Deal found 4/30$534
This Delta deal was found by Cheapflights users on 4/29. 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 8/278:55 amDUB - MDW
2 stops15h 33mDelta
Sun 8/311:00 pmMDW - DUB
2 stops13h 15mDelta
Deal found 4/29$535
This Air Canada deal was found by Cheapflights users on 4/29. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/139:20 amDUB - ORD
2 stops16h 09mAir Canada
Wed 9/173:35 pmORD - DUB
1 stop10h 10mAir Canada
Deal found 4/29$536
This Booking.com deal was found by Cheapflights users on 4/30. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/1910:40 amDUB - ORD
1 stop13h 35mMultiple Airlines
Mon 5/268:15 pmORD - DUB
Nonstop7h 30mMultiple Airlines
Deal found 4/30$537
This Finnair deal was found by Cheapflights users on 5/1. 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 9/161:45 pmDUB - ORD
Nonstop8h 00mFinnair
Mon 9/2910:20 pmORD - DUB
Nonstop7h 20mFinnair
Deal found 5/1$540
This Delta deal was found by Cheapflights users on 4/29. 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 8/296:00 amORK - ORD
1 stop14h 10mDelta
Sun 8/311:35 pmORD - ORK
2 stops19h 05mDelta
Deal found 4/29$540
This United Airlines deal was found by Cheapflights users on 4/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/811:35 amDUB - ORD
Nonstop8h 00mUnited Airlines
Wed 5/145:55 pmORD - DUB
1 stop10h 25mUnited Airlines
Deal found 4/30$541
This United Airlines deal was found by Cheapflights users on 4/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/239:30 amSNN - ORD
Nonstop8h 15mUnited Airlines
Tue 5/276:05 pmORD - SNN
Nonstop7h 25mUnited Airlines
Deal found 4/29$541
This KLM deal was found by Cheapflights users on 4/29. 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.
Fri 9/510:00 amDUB - MDW
1 stop14h 03mKLM
Mon 9/152:00 pmMDW - DUB
1 stop11h 55mKLM
Deal found 4/29$543
This Lufthansa deal was found by Cheapflights users on 4/29. 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.
Thu 9/1111:35 amDUB - ORD
Nonstop8h 00mLufthansa
Wed 9/176:30 pmORD - DUB
1 stop16h 25mLufthansa
Deal found 4/29$549
This Bravofly deal was found by Cheapflights users on 4/30. 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 Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2011:30 amDUB - ORD
Nonstop8h 30mAer Lingus
Fri 11/285:00 pmORD - DUB
1 stop11h 15mAer Lingus
Deal found 4/30$554
This American Airlines deal was found by Cheapflights users on 5/1. 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.
Thu 10/99:30 amDUB - ORD
1 stop14h 25mAmerican Airlines
Tue 10/1410:35 pmORD - DUB
1 stop12h 30mAmerican Airlines
Deal found 5/1$555

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 May 1, 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

Sun 5/18

5:55 am-6:37 pm

2 stops18h 42m

Chicago O'Hare Intl

Mon 5/26

6:30 pm-10:45 am

1 stop10h 15m

$534

DublinChicago

DUB - MDW

DUBMDW

Dublin

Wed 8/27

8:55 am-6:28 pm

2 stops15h 33m

Chicago Midway

Sun 8/31

1:00 pm-8:15 am

2 stops13h 15m

$535

DublinChicago

DUB - ORD

DUBORD

Dublin

Sat 9/13

9:20 am-7:29 pm

2 stops16h 09m

Chicago O'Hare Intl

Wed 9/17

3:35 pm-7:45 am

1 stop10h 10m

$536

DublinChicago

DUB - ORD

DUBORD

Dublin

Mon 5/19

10:40 am-6:15 pm

1 stop13h 35m

Chicago O'Hare Intl

Mon 5/26

8:15 pm-9:45 am

Nonstop7h 30m

$537

DublinChicago

DUB - ORD

DUBORD

Dublin

Tue 9/16

1:45 pm-3:45 pm

Nonstop8h 00m

Chicago O'Hare Intl

Mon 9/29

10:20 pm-11:40 am

Nonstop7h 20m

$540

CorkChicago

ORK - ORD

ORKORD

Cork

Fri 8/29

6:00 am-2:10 pm

1 stop14h 10m

Chicago O'Hare Intl

Sun 8/31

1:35 pm-2:40 pm

2 stops19h 05m

$540

DublinChicago

DUB - ORD

DUBORD

Dublin

Tue 5/20

11:35 am-1:35 pm

Nonstop8h 00m

Chicago O'Hare Intl

Tue 5/27

8:15 pm-9:45 am

Nonstop7h 30m

$541

ShannonChicago

SNN - ORD

SNNORD

Shannon

Fri 5/23

9:30 am-11:45 am

Nonstop8h 15m

Chicago O'Hare Intl

Tue 5/27

1:04 pm-10:15 am

2 stops15h 11m

$542

DublinChicago

DUB - MDW

DUBMDW

Dublin

Fri 9/5

10:00 am-6:03 pm

1 stop14h 03m

Chicago Midway

Mon 9/15

2:00 pm-7:55 am

1 stop11h 55m

$543

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 9/11

11:35 am-1:35 pm

Nonstop8h 00m

Chicago O'Hare Intl

Wed 9/17

6:30 pm-4:55 pm

1 stop16h 25m

$549

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 58 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 May 1, 2025.

It’s optimal to fly from Ireland to Chicago in the morning. By choosing this option you can save up to 6% 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 May 1, 2025.

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

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

In terms of precipitation, rainfall in Chicago ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Chicago when rainfall is around 1.7 in.

Temperature in Chicago by month

Plan your trip to Chicago by taking into account the average temperature totals 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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

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 May 1, 2025.
Get a feel of what it's like to fly with Delta, KLM and Finnair from Ireland to Chicago by reading reviews from past customers. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,934 reviews

Food

7.3

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

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

Food

7.3

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

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

Food

7.3

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

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

Food

7.3

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

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

Food

7.3

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

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

Food

7.3

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

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

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?

    One-way options have recently been found by users for as low as $447 on Aer Lingus. Other airlines that offer cheap prices include WestJet from $471 and Icelandair 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: Aer Lingus (88%), American Airlines (82%), British Airways( 82%).

  • What are the cheapest flights from Ireland to Chicago?

    While on average a flight from Ireland to Chicago is generally $1,645, our data shows the cheapest flight currently is $453. When looking at the most popular route, (Dublin - Chicago O'Hare Intl), you can expect to pay $404 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 Ireland?

Book flights to Ireland if you plan to visit one of these locations
Merrillville
Hammond
Benton Harbor
Porter
Lansing
Valparaiso
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.
Heathrow to O'Hare Intl flights
Charles de Gaulle to O'Hare Intl flights
Frankfurt to O'Hare Intl flights
Madrid to O'Hare Intl flights
Frederic Chopin to O'Hare Intl flights
Bruxelles-National to O'Hare Intl flights
Charles de Gaulle to Midway flights
Orly to O'Hare Intl flights
Gatwick to O'Hare Intl flights
Zurich to O'Hare Intl flights
Amsterdam to O'Hare Intl flights
London City to O'Hare Intl flights
Heathrow to Midway flights
Munich to O'Hare Intl flights
Malpensa to O'Hare Intl flights
Dublin to O'Hare Intl flights
Istanbul to O'Hare Intl flights
Krakow to O'Hare Intl flights
Vienna to O'Hare Intl flights
Athens to O'Hare Intl flights
Frederic Chopin to Midway flights
Leonardo da Vinci/Fiumicino to O'Hare Intl flights
Madrid to Midway flights
Barcelona-El Prat to O'Hare Intl flights
Linate to O'Hare Intl flights
Bruxelles-National to Midway flights
Beauvais-Tille to O'Hare Intl flights
Stansted to O'Hare Intl flights
Frankfurt-Hahn to O'Hare Intl flights
Bergamo to O'Hare Intl flights
Barcelona-El Prat to Midway flights
Vicenza to O'Hare Intl flights
Berlin to O'Hare Intl flights
Luton to O'Hare Intl flights
Amsterdam to Midway flights
Belgrade to O'Hare Intl flights
Copenhagen to O'Hare Intl flights
Edinburgh to O'Hare Intl flights
Lyon to O'Hare Intl flights
Heathrow to St. Louis flights
Frankfurt to St. Louis 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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$368Average$795FlexibilityNo cancel feeOn-time70%
Aer LingusCheapest$401Average$574FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$648Average$730FlexibilityNo cancel feeOn-time69%

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