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Ireland

$211+ 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 11/5. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — DUB
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
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 September 15, 2025.

Round-trip from

$472
(lastminute.com)

One-way from

$211
(oojo)

Popular in

June

Cheapest in

February

Average price

$697

Good round-trip deal

$594 or less

Good one-way deal

$504 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. 15% potential increase in price ($128 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 September 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 September 15, 2025.

This lastminute.com deal was found by Cheapflights users on 9/13. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/276:43 pmSTL - DUB
2 stops30h 27mAir Canada
Wed 11/129:00 amDUB - STL
2 stops35h 25mAir Canada
Deal found 9/13$472
This Aunt Betty deal was found by Cheapflights users on 9/13. 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 Aunt Betty is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/275:58 pmSTL - DUB
1 stop10h 57mUnited Airlines
Wed 11/129:00 amDUB - STL
1 stop12h 29mUnited Airlines
Deal found 9/13$481
This Ovago deal was found by Cheapflights users on 9/15. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/59:50 pmORD - DUB
1 stop13h 20mLufthansa
Thu 11/1310:40 amDUB - ORD
Nonstop8h 50mLufthansa
Deal found 9/15$484
This United deal was found by Cheapflights users on 9/15. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/277:35 pmORD - DUB
Nonstop7h 35mMultiple Airlines
Wed 11/55:10 amDUB - ORD
1 stop20h 55mMultiple Airlines
Deal found 9/15$486
This American Airlines deal was found by Cheapflights users on 9/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/296:10 pmORD - ORK
1 stop12h 00mAmerican Airlines
Wed 11/57:40 amORK - ORD
1 stop13h 45mAmerican Airlines
Deal found 9/14$486
This Scandinavian Airlines deal was found by Cheapflights users on 9/14. 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.
Thu 11/137:20 pmORD - DUB
1 stop17h 00mScandinavian Airlines
Wed 11/1912:30 pmDUB - ORD
1 stop34h 15mScandinavian Airlines
Deal found 9/14$487
This United Airlines deal was found by Cheapflights users on 9/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1710:00 amSTL - DUB
1 stop16h 10mUnited Airlines
Wed 12/39:00 amDUB - STL
1 stop12h 29mUnited Airlines
Deal found 9/14$487
This Gotogate deal was found by Cheapflights users on 9/13. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/229:55 amORD - DUB
1 stop16h 20mMultiple Airlines
Mon 10/271:20 pmDUB - ORD
1 stop33h 00mMultiple Airlines
Deal found 9/13$488
This Scandinavian Airlines deal was found by Cheapflights users on 9/15. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/37:20 pmORD - DUB
2 stops33h 25mScandinavian Airlines
Sun 11/1610:10 amDUB - ORD
1 stop12h 35mScandinavian Airlines
Deal found 9/15$489
This Booking.com deal was found by Cheapflights users on 9/13. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/176:43 pmSTL - DUB
2 stops30h 27mAir Canada
Wed 11/269:00 amDUB - STL
1 stop12h 29mAir Canada
Deal found 9/13$489
This United Airlines deal was found by Cheapflights users on 9/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/89:20 pmORD - DUB
1 stop27h 50mUnited Airlines
Thu 11/2010:40 amDUB - ORD
Nonstop8h 50mUnited Airlines
Deal found 9/14$490
This Scandinavian Airlines deal was found by Cheapflights users on 9/15. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/107:20 pmORD - DUB
1 stop17h 00mScandinavian Airlines
Mon 11/178:20 pmDUB - ORD
2 stops50h 25mScandinavian Airlines
Deal found 9/15$491

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 September 15, 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

ChicagoCork

ORD - ORK

ORDORK

Chicago O'Hare Intl

Wed 10/29

6:10 pm-11:10 am

1 stop12h 00m

Cork

Wed 11/5

7:40 am-3:25 pm

1 stop13h 45m

$486

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 11/12

1:10 pm-10:20 am

1 stop15h 10m

Dublin

Fri 12/5

9:00 am-3:29 pm

1 stop12h 29m

$487

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Mon 11/17

11:05 am-8:10 am

1 stop15h 05m

Dublin

Wed 11/26

9:00 am-3:29 pm

1 stop12h 29m

$487

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sun 11/16

10:00 am-10:20 am

2 stops18h 20m

Dublin

Wed 12/3

9:00 am-3:29 pm

1 stop12h 29m

$492

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 11/11

10:00 am-7:30 am

2 stops15h 30m

Dublin

Fri 12/5

9:00 am-3:29 pm

1 stop12h 29m

$492

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Sun 10/12

8:20 pm-9:45 am

Nonstop7h 25m

Dublin

Tue 10/21

9:50 am-9:09 am

1 stop29h 19m

$495

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Wed 10/15

8:20 pm-9:45 am

Nonstop7h 25m

Dublin

Fri 10/24

11:35 am-1:35 pm

Nonstop8h 00m

$497

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Sun 10/12

8:20 pm-9:45 am

Nonstop7h 25m

Dublin

Fri 10/24

11:35 am-1:35 pm

Nonstop8h 00m

$500

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Tue 10/28

4:05 pm-3:45 pm

2 stops18h 40m

Dublin

Tue 11/18

6:00 am-6:13 pm

2 stops18h 13m

$501

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Tue 10/28

4:56 pm-3:45 pm

2 stops17h 49m

Dublin

Tue 11/11

6:00 am-8:29 pm

2 stops20h 29m

$501

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 59 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 $923). 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 September 15, 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 September 15, 2025.

The most flights from USIL to IE0 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 (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 American Airlines, United Airlines, and Delta fly from Illinois to Ireland in about 12h. The time it takes to get you to your destination can typically vary by up to 6h 40m. The distance between Illinois and Ireland is about 3617 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?

    $211 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 WestJet and Aer Lingus, with prices starting from $226 and $398, 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 $923). 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.
John F Kennedy Intl to Heathrow flights
John F Kennedy Intl to Charles de Gaulle flights
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O'Hare Intl to Leonardo da Vinci/Fiumicino flights
Dallas/Fort Worth to Frankfurt flights
John F Kennedy Intl to Dublin flights
LaGuardia to Gatwick flights
John F Kennedy Intl to Frankfurt flights
John F Kennedy Intl to Malpensa flights
Dulles Intl to Leonardo da Vinci/Fiumicino flights
Seattle to Heathrow flights
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Newark to Frankfurt flights
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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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$51Average$569FlexibilityNo cancel feeOn-time62%
IcelandairCheapest$355Average$543FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$393Average$498FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$400Average$478FlexibilityNo cancel feeOn-time77%
SWISSCheapest$473Average$818FlexibilityNo cancel feeOn-time79%
Aer LingusCheapest$478Average$717FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$498Average$868FlexibilityNo cancel feeOn-time70%
IberiaCheapest$523Average$803FlexibilityNo cancel feeOn-time77%
Turkish AirlinesCheapest$528Average$596FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$530Average$965FlexibilityNo cancel feeOn-time71%

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