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Ireland

$207+ Cheap flights from Illinois to Ireland

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 9/9. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — DUB
Aug 25 — Sep 11
Mon 8/25
Mon 9/1
1 adult, Economy
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Cheap flight deals from Illinois to Ireland

Keep the following information in mind while searching for Illinois to Ireland flight deals. Data was last updated August 20, 2025.

Round-trip from

$481
(oojo)

One-way from

$207
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$767

Good round-trip deal

$615 or less

Good one-way deal

$450 or less
From Illinois to Ireland
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One-way flight from Illinois to Ireland
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Highest demand for flights based on searches. 16% potential increase in price ($132 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($18 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Price to beat on a round-trip flight from Illinois to Ireland.
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Price to beat on a one-way flight from Illinois to Ireland.
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Find flight deals from Illinois to Ireland

Cheapest flights from Illinois to Ireland
Explore the most affordable flight options available from Illinois to Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 20, 2025.

This oojo deal was found by Cheapflights users on 8/19. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/78:15 pmORD - DUB
1 stop21h 05mTAP AIR PORTUGAL
Sat 11/154:15 amDUB - ORD
1 stop16h 45mTAP AIR PORTUGAL
Deal found 8/19$481
This Scandinavian Airlines deal was found by Cheapflights users on 8/18. 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.
Thu 10/27:15 pmORD - DUB
2 stops42h 00mScandinavian Airlines
Sat 10/118:05 pmDUB - ORD
2 stops26h 05mScandinavian Airlines
Deal found 8/18$482
This oojo deal was found by Cheapflights users on 8/18. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/288:15 pmORD - DUB
1 stop13h 55mTAP AIR PORTUGAL
Thu 12/44:25 amDUB - ORD
1 stop16h 50mTAP AIR PORTUGAL
Deal found 8/18$485
This Mytrip deal was found by Cheapflights users on 8/18. 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 9/19:15 pmORD - DUB
Nonstop7h 25mAer Lingus
Tue 9/911:35 amDUB - ORD
Nonstop8h 25mAer Lingus
Deal found 8/18$486
This oojo deal was found by Cheapflights users on 8/18. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/207:20 pmORD - DUB
1 stop17h 00mScandinavian Airlines
Sun 11/307:05 pmDUB - ORD
1 stop27h 40mScandinavian Airlines
Deal found 8/18$488
This Booking.com deal was found by Cheapflights users on 8/18. 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.
Fri 10/1710:15 pmORD - DUB
1 stop30h 50mIcelandair
Sun 11/211:30 amDUB - ORD
1 stop11h 50mIcelandair
Deal found 8/18$490
This oojo deal was found by Cheapflights users on 8/20. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/227:25 pmORD - DUB
1 stop11h 50mIcelandair
Sat 11/111:30 amDUB - ORD
1 stop11h 50mIcelandair
Deal found 8/20$492
This Scandinavian Airlines deal was found by Cheapflights users on 8/19. 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.
Sun 9/77:15 pmORD - DUB
1 stop17h 00mScandinavian Airlines
Sat 10/118:05 pmDUB - ORD
2 stops26h 05mScandinavian Airlines
Deal found 8/19$493
This Scandinavian Airlines deal was found by Cheapflights users on 8/18. 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 10/2911:10 pmORD - DUB
1 stop14h 10mScandinavian Airlines
Thu 11/2012:30 pmDUB - ORD
1 stop34h 15mScandinavian Airlines
Deal found 8/18$494
This FlightHub deal was found by Cheapflights users on 8/19. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/237:20 pmORD - DUB
2 stops18h 15mScandinavian Airlines
Fri 11/286:55 pmDUB - ORD
2 stops27h 50mScandinavian Airlines
Deal found 8/19$495
This Scandinavian Airlines deal was found by Cheapflights users on 8/17. 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.
Tue 11/1110:10 amORD - DUB
2 stops19h 35mScandinavian Airlines
Sun 11/1610:10 amDUB - ORD
1 stop12h 35mScandinavian Airlines
Deal found 8/17$496
This FlightHub deal was found by Cheapflights users on 8/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/214:05 pmSTL - DUB
1 stop10h 10mMultiple Airlines
Wed 11/55:10 amDUB - STL
1 stop14h 45mMultiple Airlines
Deal found 8/18$525

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Ireland 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 August 20, 2025.
Use the filters below to find and compare flights from Illinois to Ireland that are best for you.

Fly from

Illinois

Fly to

Ireland

Route

Depart

Return

Price

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Thu 10/2

7:15 pm-7:15 pm

2 stops42h 00m

Dublin

Sat 10/11

8:05 pm-4:10 pm

2 stops26h 05m

$482

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Mon 9/1

3:45 pm-5:10 am

Nonstop7h 25m

Dublin

Thu 9/11

4:40 pm-7:00 pm

Nonstop8h 20m

$491

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Mon 9/15

3:45 pm-5:10 am

Nonstop7h 25m

Dublin

Wed 9/24

4:40 pm-7:00 pm

Nonstop8h 20m

$491

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Thu 10/30

8:50 pm-6:10 pm

2 stops16h 20m

Dublin

Sun 11/2

10:10 am-4:45 pm

1 stop12h 35m

$492

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Wed 10/29

11:10 pm-11:45 am

1 stop31h 35m

Dublin

Fri 11/14

12:30 pm-4:45 pm

1 stop34h 15m

$494

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Sun 10/26

8:20 pm-11:45 am

1 stop34h 25m

Dublin

Fri 11/21

12:30 pm-4:45 pm

1 stop34h 15m

$494

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Tue 11/11

10:10 am-11:45 am

2 stops19h 35m

Dublin

Sun 11/16

10:10 am-4:45 pm

1 stop12h 35m

$496

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Fri 11/7

7:20 pm-9:25 am

1 stop32h 05m

Dublin

Sun 11/9

7:05 pm-4:45 pm

1 stop27h 40m

$497

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Mon 9/22

7:15 pm-10:55 am

2 stops33h 40m

Dublin

Sat 10/4

8:05 pm-4:10 pm

2 stops26h 05m

$500

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 10/21

4:05 pm-8:15 am

1 stop10h 10m

Dublin

Wed 11/5

5:10 am-1:55 pm

1 stop14h 45m

$525

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/18

Showing 1-10 of 60 results
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Best time to book a flight from Illinois to Ireland

Have a flexible travel schedule? Discover the best time to fly to Ireland from Illinois 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 Illinois to Ireland

What is the cheapest month to book a flight from Illinois to Ireland?

Currently, November is the cheapest month in which you can book a flight from Illinois to Ireland (average of $509). Flying from Illinois to Ireland in June is currently the most expensive (average of $925). 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 IL to IE?

Find hourly flight availability from Illinois to Ireland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 20, 2025.

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

Weekly flight availability from Illinois to Ireland

Explore weekly flight availability from Illinois to Ireland. 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 August 20, 2025.

The most flights from USIL to IE0 are scheduled on a Monday (20 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (16 on average).

Related info for your journey

Find useful and relevant information for your journey from Illinois to Ireland. 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 Illinois to Ireland?

    Airlines like Scandinavian Airlines, Aer Lingus, and American Airlines fly from Illinois to Ireland in about 7h 25m. The time it takes to get you to your destination can typically vary by up to 34h 35m. The distance between Illinois and Ireland is about 3661 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Illinois to Ireland one-way?

    $212 is the cheapest one-way deal found within the past few days, from TAP AIR PORTUGAL. You may also be able to find cheap deals on Air Canada and Air France, with prices starting from $408 and $459, respectively.

  • Can I find deals for flights from Illinois to Ireland that include hotel bookings?

    Yes. In addition to deals on Illinois to Ireland flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Ireland?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Ireland.

  • Can I find deals for business class flights from Illinois to Ireland?

    Yes. Cheapflights offers flight deals from Illinois to Ireland 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 Illinois to Ireland?

    Currently, November is the cheapest month in which you can book a flight from Illinois to Ireland (average of $509). Flying from Illinois to Ireland in June is currently the most expensive (average of $925). 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

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Alternative routes for Illinois to Ireland

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Illinois to Ireland

Discover the top 10 airlines that operate flights from Illinois to Ireland. 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 August 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$51Average$275FlexibilityNo cancel feeOn-time62%
IcelandairCheapest$355Average$544FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$394Average$491FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$400Average$481FlexibilityNo cancel feeOn-time77%
Aer LingusCheapest$458Average$716FlexibilityNo cancel feeOn-timeN/A
SWISSCheapest$473Average$818FlexibilityNo cancel feeOn-time79%
American AirlinesCheapest$511Average$946FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$513Average$884FlexibilityNo cancel feeOn-time69%
IberiaCheapest$515Average$770FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$525Average$670FlexibilityNo cancel feeOn-time70%

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