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Ireland

$202+ 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 12/8. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — DUB
Dec 13 — Dec 201
Sat 12/13
Sat 12/20
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 November 13, 2025.

Most accurate provider

Gotogate
3 stars

Most trusted provider

Gotogate
3 stars

Round-trip from

$424
(Delta)

One-way from

$202
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$617

Good round-trip deal

$593 or less

Good one-way deal

$452 or less
Provider with most accurate pricing for Chicago (CHI)-Dublin flight deals.
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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. 14% potential increase in price ($120 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in November 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 November 13, 2025.

This Delta deal was found by Cheapflights users on 11/11. 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 11/231:35 pmSTL - DUB
2 stops13h 45mDelta
Tue 12/910:45 amDUB - STL
1 stop15h 32mDelta
Deal found 11/11$424
This Delta deal was found by Cheapflights users on 11/12. 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.
Mon 11/1710:45 amSTL - DUB
2 stops16h 00mDelta
Wed 12/311:30 amDUB - STL
2 stops14h 47mDelta
Deal found 11/12$425
This KLM deal was found by Cheapflights users on 11/12. 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.
Tue 12/29:00 amSTL - DUB
1 stop16h 45mKLM
Tue 12/99:45 amDUB - STL
1 stop13h 04mKLM
Deal found 11/12$433
This United Airlines deal was found by Cheapflights users on 11/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/1411:05 amSTL - DUB
1 stop15h 05mUnited Airlines
Mon 11/179:00 amDUB - STL
2 stops39h 47mUnited Airlines
Deal found 11/13$455
This Delta deal was found by Cheapflights users on 11/12. 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.
Tue 12/211:40 amSTL - DUB
2 stops14h 20mDelta
Tue 12/910:45 amDUB - STL
2 stops16h 02mDelta
Deal found 11/12$457
This Delta deal was found by Cheapflights users on 11/10. 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 12/32:07 pmSTL - DUB
1 stop11h 38mDelta
Sun 12/79:45 amDUB - STL
1 stop12h 21mDelta
Deal found 11/10$458
This Delta deal was found by Cheapflights users on 11/11. 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 11/194:25 pmORD - DUB
1 stop17h 55mDelta
Wed 11/2611:30 amDUB - ORD
1 stop16h 23mDelta
Deal found 11/11$460
This United Airlines deal was found by Cheapflights users on 11/11. 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 12/53:19 pmSTL - DUB
2 stops12h 36mUnited Airlines
Wed 12/109:00 amDUB - STL
2 stops42h 58mUnited Airlines
Deal found 11/11$460
This Mytrip deal was found by Cheapflights users on 11/12. 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 12/812:50 pmORD - DUB
2 stops16h 10mMultiple Airlines
Mon 12/156:35 pmDUB - ORD
1 stop27h 45mMultiple Airlines
Deal found 11/12$461
This Air Canada deal was found by Cheapflights users on 11/12. 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.
Tue 12/910:00 amSTL - DUB
2 stops15h 10mAir Canada
Wed 2/119:00 amDUB - STL
2 stops43h 00mAir Canada
Deal found 11/12$462
This United deal was found by Cheapflights users on 11/12. 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.
Sun 11/166:35 pmORD - DUB
Nonstop7h 35mMultiple Airlines
Tue 11/255:00 amDUB - ORD
1 stop14h 10mMultiple Airlines
Deal found 11/12$463
This Delta deal was found by Cheapflights users on 11/11. 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 11/146:00 amEVV - DUB
1 stop19h 45mDelta
Tue 11/189:45 amDUB - EVV
2 stops29h 45mDelta
Deal found 11/11$463

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 November 13, 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

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sun 11/23

1:35 pm-9:20 am

2 stops13h 45m

Dublin

Tue 12/9

10:45 am-8:47 pm

2 stops16h 02m

$424

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Mon 11/17

4:30 pm-8:45 am

1 stop10h 15m

Dublin

Wed 12/3

9:45 am-4:21 pm

1 stop12h 36m

$425

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Mon 11/17

10:45 am-8:45 am

2 stops16h 00m

Dublin

Wed 12/3

11:30 am-8:17 pm

2 stops14h 47m

$425

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sun 11/23

4:30 pm-8:45 am

1 stop10h 15m

Dublin

Tue 12/9

10:45 am-4:35 pm

1 stop11h 50m

$433

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 12/2

9:00 am-7:45 am

1 stop16h 45m

Dublin

Tue 12/9

10:45 am-4:35 pm

1 stop11h 50m

$433

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 12/9

9:00 am-7:45 am

1 stop16h 45m

Dublin

Tue 12/16

9:45 am-4:49 pm

1 stop13h 04m

$433

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 12/2

9:00 am-7:45 am

1 stop16h 45m

Dublin

Tue 12/9

9:45 am-4:49 pm

1 stop13h 04m

$433

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 12/2

6:00 am-7:45 am

1 stop19h 45m

Dublin

Tue 12/9

10:45 am-8:47 pm

2 stops16h 02m

$438

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Mon 12/8

6:35 pm-8:10 am

Nonstop7h 35m

Dublin

Mon 12/15

1:20 pm-4:20 pm

1 stop33h 00m

$466

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Wed 4/8

8:15 pm-9:45 am

Nonstop7h 30m

Dublin

Wed 4/15

9:50 am-7:25 pm

1 stop15h 35m

$468

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/11

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, January is the cheapest month in which you can book a flight from Illinois to Ireland (average of $376). Flying from Illinois to Ireland in June is currently the most expensive (average of $678). 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 November 13, 2025.

A simple way to save on the total cost of your ticket is to fly from Illinois to Ireland at noon. If you’re flexible enough to do this you can expect to save up to 27% on your trip compared to booking a flight in the morning.

What is the cheapest day to fly from Illinois to Ireland?

Use this chart to determine the cheapest time to fly round-trip from Illinois to Ireland. Price data was last updated on November 3, 2024.

Travelers seeking maximum savings on their Illinois to Ireland flight should consider departing on Saturday mornings when fares are most often at their lowest. Friday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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 November 13, 2025.

The most flights from USIL to IE0 are scheduled on a Wednesday (14 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (10 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 Delta, United Airlines, and KLM fly from Illinois to Ireland in about 7h 30m. The time it takes to get you to your destination can typically vary by up to 17h 30m. 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?

    $265 is the cheapest one-way deal found within the past few days, from JetBlue. You may also be able to find cheap deals on American Airlines and Delta, with prices starting from $403 and $419, 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, January is the cheapest month in which you can book a flight from Illinois to Ireland (average of $376). Flying from Illinois to Ireland in June is currently the most expensive (average of $678). 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

Browse thousands of different options on Cheapflights for your next trip

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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 November 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$51Average$557FlexibilityNo cancel feeOn-time62%
IcelandairCheapest$346Average$556FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$393Average$502FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$400Average$479FlexibilityNo cancel feeOn-time77%
SWISSCheapest$473Average$818FlexibilityNo cancel feeOn-time79%
LufthansaCheapest$476Average$744FlexibilityNo cancel feeOn-time76%
Aer LingusCheapest$494Average$721FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$512Average$865FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$522Average$870FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$523Average$674FlexibilityNo cancel feeOn-time67%

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