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$438+ 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 1/30. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — CHI
Dec 3 — Dec 101
Wed 12/3
Wed 12/10
1 adult, Economy
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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 November 3, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 11/3. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2010:30 amDUB - ORD
1 stop12h 30mMultiple Airlines
Mon 11/246:25 pmORD - DUB
1 stop12h 10mMultiple Airlines
Deal found 11/3$456
This American Airlines deal was found by Cheapflights users on 11/2. 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.
Mon 11/104:00 pmDUB - ORD
1 stop31h 00mAmerican Airlines
Sun 11/166:30 pmORD - DUB
1 stop16h 20mAmerican Airlines
Deal found 11/2$457
This American Airlines deal was found by Cheapflights users on 11/1. 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.
Sat 11/810:55 amDUB - ORD
1 stop12h 05mAmerican Airlines
Fri 11/148:40 pmORD - DUB
1 stop14h 20mAmerican Airlines
Deal found 11/1$458
This American Airlines deal was found by Cheapflights users on 11/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2010:30 amDUB - ORD
1 stop12h 30mAmerican Airlines
Mon 11/246:25 pmORD - DUB
1 stop12h 10mAmerican Airlines
Deal found 11/3$459
This American Airlines deal was found by Cheapflights users on 11/2. 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.
Sun 11/911:30 amDUB - ORD
1 stop32h 29mAmerican Airlines
Sun 11/166:30 pmORD - DUB
1 stop16h 20mAmerican Airlines
Deal found 11/2$465
This Finnair deal was found by Cheapflights users on 11/2. 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 12/211:30 amDUB - ORD
1 stop12h 14mMultiple Airlines
Tue 12/98:35 pmORD - DUB
1 stop11h 45mMultiple Airlines
Deal found 11/2$466
This Delta deal was found by Cheapflights users on 11/2. 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 11/98:50 amDUB - ORD
1 stop11h 30mDelta
Tue 11/185:20 pmORD - DUB
1 stop16h 25mDelta
Deal found 11/2$467
This Delta deal was found by Cheapflights users on 11/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/88:50 amDUB - ORD
1 stop11h 30mDelta
Sat 11/1511:09 amORD - DUB
1 stop14h 36mDelta
Deal found 11/1$470
This Delta deal was found by Cheapflights users on 11/2. 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 11/95:55 amDUB - ORD
1 stop14h 25mDelta
Sun 11/167:00 amORD - DUB
2 stops19h 05mDelta
Deal found 11/2$472
This Delta deal was found by Cheapflights users on 11/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/85:55 amDUB - ORD
2 stops16h 16mDelta
Mon 11/175:08 pmORD - DUB
2 stops16h 37mDelta
Deal found 11/1$473
This Mytrip deal was found by Cheapflights users on 11/2. 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.
Mon 11/103:20 pmDUB - ORD
Nonstop8h 35mAer Lingus
Sun 11/167:40 pmORD - DUB
Nonstop7h 20mAer Lingus
Deal found 11/2$474
This Delta deal was found by Cheapflights users on 11/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/195:55 amDUB - ORD
2 stops17h 58mDelta
Sun 11/231:25 pmORD - DUB
1 stop13h 20mDelta
Deal found 11/3$475

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 November 3, 2025.

Round-trip from

$452
(SmartFares)

One-way from

$438
(Gurufare)

Popular in

July

Cheapest in

September

Average price

$511

Good round-trip deal

$600 or less

Good one-way deal

$504 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 ($103 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 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 November 3, 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 3/1

5:55 am-2:20 pm

1 stop14h 25m

Chicago O'Hare Intl

Wed 3/11

6:20 pm-3:45 pm

1 stop16h 25m

$467

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 3/27

11:30 am-8:07 pm

1 stop13h 37m

Chicago O'Hare Intl

Tue 3/31

10:35 pm-5:05 pm

1 stop12h 30m

$467

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 12/17

6:00 am-3:10 pm

1 stop15h 10m

Chicago O'Hare Intl

Sat 1/10

10:24 am-7:50 am

2 stops15h 26m

$473

DublinChicago

DUB - ORD

DUBORD

Dublin

Mon 11/24

5:55 am-6:11 pm

2 stops18h 16m

Chicago O'Hare Intl

Sun 11/30

6:45 am-7:45 am

1 stop19h 00m

$475

DublinChicago

DUB - MDW

DUBMDW

Dublin

Sun 3/1

5:55 am-6:37 pm

2 stops18h 42m

Chicago Midway

Wed 3/11

1:00 pm-8:45 am

2 stops14h 45m

$475

DublinChicago

DUB - MDW

DUBMDW

Dublin

Wed 11/19

5:55 am-6:18 pm

2 stops18h 23m

Chicago Midway

Sun 11/23

9:34 am-8:45 am

2 stops17h 11m

$475

DublinChicago

DUB - MDW

DUBMDW

Dublin

Fri 11/21

5:55 am-6:14 pm

2 stops18h 19m

Chicago Midway

Tue 11/25

1:47 pm-7:45 am

1 stop11h 58m

$475

DublinChicago

DUB - MDW

DUBMDW

Dublin

Thu 11/20

5:55 am-6:08 pm

2 stops18h 13m

Chicago Midway

Mon 11/24

12:47 pm-8:45 am

2 stops13h 58m

$475

DublinChicago

DUB - ORD

DUBORD

Dublin

Tue 3/31

6:00 am-6:46 pm

2 stops18h 46m

Chicago O'Hare Intl

Tue 4/7

5:10 pm-3:00 pm

1 stop15h 50m

$476

DublinChicago

DUB - ORD

DUBORD

Dublin

Sat 11/15

5:55 am-5:53 pm

2 stops17h 58m

Chicago O'Hare Intl

Sat 11/22

3:56 pm-7:45 am

1 stop9h 49m

$476

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/1

Showing 1-10 of 47 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 $392). Flying from Ireland to Chicago in July is currently the most expensive (average of $623). 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 November 3, 2025.

It’s optimal to fly from Ireland to Chicago in the evening. By choosing this option you can save up to 27% on the cost of your flight, compared to a flight in the morning.

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 November 3, 2025.

The most flights from IE0 to CHI are scheduled on a Monday (16 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (9 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 November 3, 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
8,997 reviews

Overall

7.4

Boarding

7.7

Entertainment

7.1

Crew

8.1

Food

6.6

Comfort

7.3

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
United Airlines
7.4
Good
8,997 reviews
United Airlines
7.4
Good
8,997 reviews

Overall

7.4

Boarding

7.7

Entertainment

7.1

Crew

8.1

Food

6.6

Comfort

7.3

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
Aer Lingus
7.2
Good
1,365 reviews
United Airlines
7.4
Good
8,997 reviews

Overall

7.4

Boarding

7.7

Entertainment

7.1

Crew

8.1

Food

6.6

Comfort

7.3

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

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 $616, Delta can have you in Chicago from Ireland in 13h 35m. The distance between Ireland and Chicago is about 3578 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, Cork - Chicago Midway or Shannon - 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: Air Canada (86%), Austrian Airlines (75%), Brussels Airlines( 75%).

  • What are the cheapest flights from Ireland to Chicago?

    While on average a flight from Ireland to Chicago is generally $1,148, our data shows the cheapest flight currently is $461. When looking at the most popular route, (Dublin - Chicago O'Hare Intl), you can expect to pay $411 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 $392). Flying from Ireland to Chicago in July is currently the most expensive (average of $623). 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
Merrillville
Lansing
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
Charles de Gaulle to O'Hare Intl flights
Heathrow to O'Hare Intl flights
Frederic Chopin to O'Hare Intl flights
Frederic Chopin to Midway flights
Orly to O'Hare Intl flights
Charles de Gaulle to Midway flights
Zurich to O'Hare Intl flights
Munich to O'Hare Intl flights
Madrid to O'Hare Intl flights
Heathrow to Midway flights
Gatwick to O'Hare Intl flights
Vienna to O'Hare Intl flights
Beauvais-Tille to O'Hare Intl flights
London City to O'Hare Intl flights
Barcelona-El Prat to O'Hare Intl flights
Krakow to O'Hare Intl flights
Stansted to O'Hare Intl flights
Luton to O'Hare Intl flights
Frankfurt-Hahn to O'Hare Intl flights
Dublin to O'Hare Intl flights
Istanbul to O'Hare Intl flights
Modlin to O'Hare Intl flights
Bruxelles-National to O'Hare Intl flights
Amsterdam to O'Hare Intl flights
Athens to O'Hare Intl flights
Malpensa to O'Hare Intl flights
Madrid to Midway flights
Barcelona-El Prat to Midway flights
Duesseldorf Intl to O'Hare Intl flights
Berlin to O'Hare Intl flights
Linate to O'Hare Intl flights
Munich to Midway flights
Leonardo da Vinci/Fiumicino to O'Hare Intl flights
Sofia to O'Hare Intl flights
Geneva to O'Hare Intl flights
Vicenza to O'Hare Intl flights
Lisbon to O'Hare Intl flights
Heathrow to St. Louis flights
Basel to O'Hare Intl flights
Skopje to O'Hare Intl flights
Geneva 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 November 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$393Average$514FlexibilityNo cancel feeOn-time76%
Aer LingusCheapest$455Average$630FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$479Average$696FlexibilityNo cancel feeOn-time69%

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