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Ireland

$246+ 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 7/31. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — DUB
jun. 17 — jun. 241
mar. 6/17
mar. 6/24
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 junio 12, 2025.

Round-trip from

$485
(American Airlines)

One-way from

$246
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$892

Good round-trip deal

$646 or less

Good one-way deal

$489 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. 17% potential increase in price ($144 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($20 potential savings vs. average RT price).
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Average for round-trip flights in June 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 junio 12, 2025.

This American Airlines deal was found by Cheapflights users on 6/9. 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.
mar. 8/57:10 pmORD - SNN
1 stop15h 00mAmerican Airlines
mar. 8/199:15 pmSNN - ORD
1 stop20h 40mAmerican Airlines
Deal found 6/9$485
This Booking.com deal was found by Cheapflights users on 6/11. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 7/205:00 amSTL - DUB
2 stops20h 45mAir Canada
mar. 8/59:20 amDUB - STL
2 stops36h 01mAir Canada
Deal found 6/11$501
This United Airlines deal was found by Cheapflights users on 6/11. 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.
mié. 9/31:30 pmSTL - DUB
1 stop12h 15mUnited Airlines
mar. 9/99:20 amDUB - STL
2 stops36h 24mUnited Airlines
Deal found 6/11$503
This United Airlines deal was found by Cheapflights users on 6/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/56:05 pmORD - SNN
Nonstop7h 25mUnited Airlines
mié. 8/209:30 amSNN - ORD
Nonstop8h 15mUnited Airlines
Deal found 6/10$522
This Booking.com deal was found by Cheapflights users on 6/11. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/1810:30 amSTL - DUB
2 stops14h 40mMultiple Airlines
mar. 11/255:00 amDUB - STL
2 stops23h 47mMultiple Airlines
Deal found 6/11$530
This Iberia deal was found by Cheapflights users on 6/11. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 7/205:56 pmSTL - DUB
1 stop33h 49mIberia
mar. 8/51:45 pmDUB - STL
1 stop11h 23mIberia
Deal found 6/11$533
This KLM deal was found by Cheapflights users on 6/10. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/510:46 amSTL - DUB
1 stop15h 59mKLM
mar. 8/1911:00 amDUB - STL
1 stop17h 02mKLM
Deal found 6/10$536
This United Airlines deal was found by Cheapflights users on 6/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/156:35 amSTL - SNN
1 stop18h 55mUnited Airlines
mié. 9/2412:30 pmSNN - STL
1 stop13h 09mUnited Airlines
Deal found 6/10$546
This Delta deal was found by Cheapflights users on 6/9. 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.
mié. 9/310:45 amSTL - DUB
2 stops15h 10mDelta
mié. 9/171:15 pmDUB - STL
2 stops24h 55mDelta
Deal found 6/9$546
This Ovago deal was found by Cheapflights users on 6/11. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 7/2812:27 pmSTL - DUB
2 stops15h 13mBritish Airways
mié. 8/610:50 amDUB - STL
2 stops18h 24mBritish Airways
Deal found 6/11$553
This Delta deal was found by Cheapflights users on 6/10. 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.
dom. 7/276:00 amMDW - SNN
2 stops23h 10mDelta
mar. 8/51:05 pmSNN - MDW
2 stops25h 39mDelta
Deal found 6/10$556
This Delta deal was found by Cheapflights users on 6/10. 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.
dom. 7/276:24 pmORD - SNN
1 stop10h 46mDelta
mar. 8/51:05 pmSNN - ORD
1 stop14h 38mDelta
Deal found 6/10$556

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 junio 12, 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

mar. 8/5

7:10 pm-4:10 pm

1 stop15h 00m

Shannon

mar. 8/19

9:15 pm-11:55 am

1 stop20h 40m

$485

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

dom. 7/20

5:00 am-7:45 am

2 stops20h 45m

Dublin

mar. 8/5

9:20 am-3:21 pm

2 stops36h 01m

$501

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

mié. 9/3

1:30 pm-7:45 am

1 stop12h 15m

Dublin

mar. 9/9

9:20 am-3:44 pm

2 stops36h 24m

$503

ChicagoShannon

ORD - SNN

ORDSNN

Chicago O'Hare Intl

mar. 8/5

6:05 pm-7:30 am

Nonstop7h 25m

Shannon

mié. 8/20

9:30 am-11:45 am

Nonstop8h 15m

$522

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

dom. 7/20

5:56 pm-9:45 am

1 stop33h 49m

Dublin

mar. 8/5

1:45 pm-7:08 pm

1 stop11h 23m

$533

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

mar. 8/5

10:46 am-8:45 am

1 stop15h 59m

Dublin

mar. 8/19

11:00 am-10:02 pm

1 stop17h 02m

$536

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

mié. 9/3

10:45 am-7:55 am

2 stops15h 10m

Dublin

mié. 9/17

1:15 pm-8:10 am

2 stops24h 55m

$546

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

lun. 7/28

12:27 pm-9:40 am

2 stops15h 13m

Dublin

mié. 8/6

10:50 am-11:14 pm

2 stops18h 24m

$553

ChicagoShannon

MDW - SNN

MDWSNN

Chicago Midway

dom. 7/27

6:00 am-11:10 am

2 stops23h 10m

Shannon

mar. 8/5

1:05 pm-8:44 am

2 stops25h 39m

$556

ChicagoShannon

ORD - SNN

ORDSNN

Chicago O'Hare Intl

dom. 7/27

6:24 pm-11:10 am

1 stop10h 46m

Shannon

mar. 8/5

1:05 pm-9:43 pm

1 stop14h 38m

$556

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

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 $947). 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 junio 12, 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 junio 12, 2025.

The most flights from USIL to IE0 are scheduled on a Monday (17 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (17 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 junio 12, 2025.
Read through reviews of airlines operating flights from Illinois to Ireland, such as Delta, Porter Airlines and KLM. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,950 reviews

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,950 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Porter Airlines
8.0
Very good
288 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,358 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air Transat
7.8
Good
396 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Austrian Airlines
7.6
Good
802 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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?

    $338 is the cheapest one-way deal found within the past few days, from JetBlue. You may also be able to find cheap deals on Icelandair and Scandinavian Airlines, with prices starting from $355 and $364, 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 $947). 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 junio 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$355Average$544FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$393Average$480FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$400Average$484FlexibilityNo cancel feeOn-time77%
Aer LingusCheapest$445Average$705FlexibilityNo cancel feeOn-timeN/A
SWISSCheapest$473Average$818FlexibilityNo cancel feeOn-time79%
KLMCheapest$482Average$769FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$489Average$930FlexibilityNo cancel feeOn-time71%
IberiaCheapest$507Average$728FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$513Average$882FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$519Average$784FlexibilityNo cancel feeOn-time70%

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