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Ireland

$268+ 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 8/6. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — DUB
May 6 — May 131
Tue 5/6
Tue 5/13
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 May 1, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$494
(American Airlines)

One-way from

$268
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$805

Good round-trip deal

$721 or less

Good one-way deal

$509 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. 20% potential increase in price ($172 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($25 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 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 May 1, 2025.

This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/221:54 pmSTL - DUB
1 stop13h 51mIberia
Wed 11/52:05 pmDUB - STL
1 stop14h 24mIberia
Deal found 4/30$472
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/135:45 pmORD - SNN
1 stop16h 25mAmerican Airlines
Tue 8/199:15 pmSNN - ORD
1 stop20h 35mAmerican Airlines
Deal found 4/30$494
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2212:50 pmSTL - DUB
1 stop10h 40mAmerican Airlines
Wed 11/511:30 amDUB - STL
2 stops15h 42mAmerican Airlines
Deal found 4/30$496
This British Airways 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/224:52 pmSTL - DUB
2 stops15h 43mBritish Airways
Wed 11/510:25 amDUB - STL
2 stops17h 16mBritish Airways
Deal found 4/30$506
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.
Tue 8/56:05 pmORD - SNN
Nonstop7h 25mUnited Airlines
Tue 8/199:30 amSNN - ORD
Nonstop8h 15mUnited Airlines
Deal found 4/30$522
This Scandinavian 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/147:20 pmORD - DUB
2 stops34h 00mScandinavian Airlines
Mon 11/177:05 pmDUB - ORD
2 stops32h 57mScandinavian Airlines
Deal found 4/29$595
This Delta deal was found by Cheapflights users on 4/28. 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 8/125:59 pmMDW - DUB
2 stops15h 01mDelta
Wed 8/2011:00 amDUB - MDW
1 stop16h 47mDelta
Deal found 4/28$596
This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/199:24 pmORD - DUB
2 stops28h 21mAir Canada
Fri 8/19:50 amDUB - ORD
1 stop11h 14mAir Canada
Deal found 4/30$598
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.
Thu 8/219:17 amSTL - DUB
2 stops16h 58mUnited Airlines
Tue 8/269:20 amDUB - STL
2 stops31h 18mUnited Airlines
Deal found 4/29$598
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/2711:45 pmORD - DUB
1 stop27h 50mTurkish Airlines
Thu 10/21:35 pmDUB - ORD
1 stop26h 05mTurkish Airlines
Deal found 4/30$599
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/210:20 pmORD - DUB
Nonstop7h 20mIberia
Fri 10/31:45 pmDUB - ORD
Nonstop8h 00mIberia
Deal found 4/29$600
This Iberia 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/215:00 pmORD - DUB
1 stop10h 50mMultiple Airlines
Thu 8/281:45 pmDUB - ORD
Nonstop8h 00mMultiple Airlines
Deal found 4/30$602

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 May 1, 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

ChicagoShannon

ORD - SNN

ORDSNN

Chicago O'Hare Intl

Tue 7/22

8:15 pm-8:35 pm

1 stop18h 20m

Shannon

Wed 7/30

7:40 am-5:37 pm

2 stops15h 57m

$575

ChicagoDublin

MDW - DUB

MDWDUB

Chicago Midway

Tue 8/12

5:59 pm-3:00 pm

2 stops15h 01m

Dublin

Wed 8/20

11:00 am-9:47 pm

1 stop16h 47m

$596

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Sun 7/20

5:40 pm-10:15 am

1 stop10h 35m

Dublin

Thu 7/31

1:45 pm-3:45 pm

Nonstop8h 00m

$596

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Sat 7/19

9:24 pm-7:45 am

2 stops28h 21m

Dublin

Fri 8/1

9:50 am-3:04 pm

1 stop11h 14m

$598

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Wed 7/23

10:25 pm-11:40 am

Nonstop7h 15m

Dublin

Wed 8/6

10:50 am-6:15 pm

1 stop13h 25m

$602

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Tue 7/15

2:30 pm-6:30 am

1 stop10h 00m

Dublin

Thu 7/24

1:45 pm-3:45 pm

Nonstop8h 00m

$603

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Mon 7/28

9:15 pm-10:40 am

Nonstop7h 25m

Dublin

Wed 8/6

11:35 am-2:00 pm

Nonstop8h 25m

$605

ChicagoDublin

MDW - DUB

MDWDUB

Chicago Midway

Sun 8/10

9:40 am-8:55 am

1 stop17h 15m

Dublin

Fri 8/15

10:30 am-8:45 am

1 stop28h 15m

$607

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Sat 7/19

9:31 pm-7:10 am

1 stop27h 39m

Dublin

Wed 7/30

9:50 am-7:29 pm

1 stop15h 39m

$609

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 7/29

4:00 pm-8:15 am

1 stop10h 15m

Dublin

Tue 8/5

9:20 am-12:27 pm

2 stops33h 07m

$609

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

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 $981). 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 May 1, 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 May 1, 2025.

The most flights from USIL to IE0 are scheduled on a Monday (11 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 Ireland by month

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

In terms of precipitation, rainfall in Ireland ranges from 1.9 - 3.1 inches per month. October is typically the wettest month, when rainfall can reach 3.1 in. February is typically the driest time to visit Ireland when rainfall is around 1.9 in.

Temperature in Ireland by month

Plan your trip to Ireland by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ireland, 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 60.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 41.0 F).

Reviews of airlines servicing Ireland

Get insights into the airlines that provide service to Ireland. 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 Ireland. Reviews last updated May 1, 2025.
Read through reviews of airlines operating flights from Illinois to Ireland, such as Singapore Airlines, Delta and KLM. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Singapore Airlines
8.1
Very good
1,292 reviews

Boarding

8.2

Overall

8.1

Entertainment

8.0

Crew

8.6

Comfort

7.9

Food

7.7

Reviews

1 / 20
6.0
Good

Gina,Dec 2024

BLR - SIN

Overall the experience was good. First flight of 17 hours had no entertainment since Singapore airline has technical issues. Was informed that passengers would get a $350 voucher for future flight. Uncertain how that is being distributed but would like to understand if an email is required from my end or if it is an automatic email sent to me by Singapore Airlines. -Gina Robles
Singapore Airlines
8.1
Very good
1,292 reviews
Singapore Airlines
8.1
Very good
1,292 reviews

Boarding

8.2

Overall

8.1

Entertainment

8.0

Crew

8.6

Comfort

7.9

Food

7.7

Reviews

1 / 20
6.0
Good

Gina,Dec 2024

BLR - SIN

Overall the experience was good. First flight of 17 hours had no entertainment since Singapore airline has technical issues. Was informed that passengers would get a $350 voucher for future flight. Uncertain how that is being distributed but would like to understand if an email is required from my end or if it is an automatic email sent to me by Singapore Airlines. -Gina Robles
Delta
8.0
Very good
7,934 reviews
Singapore Airlines
8.1
Very good
1,292 reviews

Boarding

8.2

Overall

8.1

Entertainment

8.0

Crew

8.6

Comfort

7.9

Food

7.7

Reviews

1 / 20
6.0
Good

Gina,Dec 2024

BLR - SIN

Overall the experience was good. First flight of 17 hours had no entertainment since Singapore airline has technical issues. Was informed that passengers would get a $350 voucher for future flight. Uncertain how that is being distributed but would like to understand if an email is required from my end or if it is an automatic email sent to me by Singapore Airlines. -Gina Robles
KLM
7.8
Good
1,334 reviews
Singapore Airlines
8.1
Very good
1,292 reviews

Boarding

8.2

Overall

8.1

Entertainment

8.0

Crew

8.6

Comfort

7.9

Food

7.7

Reviews

1 / 20
6.0
Good

Gina,Dec 2024

BLR - SIN

Overall the experience was good. First flight of 17 hours had no entertainment since Singapore airline has technical issues. Was informed that passengers would get a $350 voucher for future flight. Uncertain how that is being distributed but would like to understand if an email is required from my end or if it is an automatic email sent to me by Singapore Airlines. -Gina Robles
Air Transat
7.8
Good
385 reviews
Singapore Airlines
8.1
Very good
1,292 reviews

Boarding

8.2

Overall

8.1

Entertainment

8.0

Crew

8.6

Comfort

7.9

Food

7.7

Reviews

1 / 20
6.0
Good

Gina,Dec 2024

BLR - SIN

Overall the experience was good. First flight of 17 hours had no entertainment since Singapore airline has technical issues. Was informed that passengers would get a $350 voucher for future flight. Uncertain how that is being distributed but would like to understand if an email is required from my end or if it is an automatic email sent to me by Singapore Airlines. -Gina Robles
Austrian Airlines
7.6
Good
781 reviews
Singapore Airlines
8.1
Very good
1,292 reviews

Boarding

8.2

Overall

8.1

Entertainment

8.0

Crew

8.6

Comfort

7.9

Food

7.7

Reviews

1 / 20
6.0
Good

Gina,Dec 2024

BLR - SIN

Overall the experience was good. First flight of 17 hours had no entertainment since Singapore airline has technical issues. Was informed that passengers would get a $350 voucher for future flight. Uncertain how that is being distributed but would like to understand if an email is required from my end or if it is an automatic email sent to me by Singapore Airlines. -Gina Robles

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.

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

    $393 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on United Airlines and British Airways, with prices starting from $413 and $415, 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 $981). 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
Newark to Heathrow flights
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O'Hare Intl to Heathrow flights
Dallas/Fort Worth to Heathrow flights
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O'Hare Intl to Leonardo da Vinci/Fiumicino flights
Newark to Dublin flights
John F Kennedy Intl to Dublin flights
Dulles Intl to Charles de Gaulle flights
Newark to Madrid flights
O'Hare Intl to Charles de Gaulle flights
Boston to Leonardo da Vinci/Fiumicino flights
O'Hare Intl to Athens flights
Baltimore to Heathrow flights
Dallas/Fort Worth to Charles de Gaulle flights
Boston to Charles de Gaulle flights
LaGuardia to Gatwick flights
LaGuardia to Leonardo da Vinci/Fiumicino flights
Dulles Intl to Leonardo da Vinci/Fiumicino flights
Newark to Malpensa flights
LaGuardia to Athens flights
Boston to Gatwick flights
Atlanta to Heathrow flights
San Francisco to Charles de Gaulle flights
Newark to Frankfurt flights

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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air FranceCheapest$196Average$200FlexibilityNo cancel feeOn-time77%
Scandinavian AirlinesCheapest$341Average$484FlexibilityNo cancel feeOn-time77%
IcelandairCheapest$355Average$554FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$393Average$475FlexibilityNo cancel feeOn-timeN/A
Aer LingusCheapest$444Average$708FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$482Average$769FlexibilityNo cancel feeOn-time75%
IberiaCheapest$509Average$727FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$509Average$930FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$513Average$883FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$519Average$657FlexibilityNo cancel feeOn-time70%

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