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$385+ Cheap flights from Ireland to Illinois

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 5/13. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — ORD
may. 6 — may. 131
mar. 5/6
mar. 5/13
1 adult, Economy
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Cheap flight deals from Ireland to Illinois

Keep the following information in mind while searching for Ireland to Illinois flight deals. Data was last updated mayo 1, 2025.

Round-trip from

$534
(Delta)

One-way from

$427
(Kiwi.com)

Popular in

July

Cheapest in

November

Average price

$573

Good round-trip deal

$691 or less

Good one-way deal

$548 or less
From Ireland to Illinois
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One-way flight from Ireland to Illinois
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Highest demand for flights based on searches. 16% potential increase in price ($110 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($15 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 Ireland to Illinois.
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Price to beat on a one-way flight from Ireland to Illinois.
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Find flight deals from Ireland to Illinois

Cheapest flights from Ireland to Illinois
Explore the most affordable flight options available from Ireland to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on mayo 1, 2025.

This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 5/185:55 amDUB - ORD
2 stops18h 42mDelta
lun. 5/266:30 pmORD - DUB
1 stop10h 15mDelta
Deal found 4/30$534
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/278:55 amDUB - MDW
2 stops15h 33mDelta
dom. 8/311:00 pmMDW - DUB
2 stops13h 15mDelta
Deal found 4/29$535
This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/139:20 amDUB - ORD
2 stops16h 09mAir Canada
mié. 9/173:35 pmORD - DUB
1 stop10h 10mAir Canada
Deal found 4/29$536
This Booking.com 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 5/1910:40 amDUB - ORD
1 stop13h 35mMultiple Airlines
lun. 5/268:15 pmORD - DUB
Nonstop7h 30mMultiple Airlines
Deal found 4/30$537
This Finnair deal was found by Cheapflights users on 5/1. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/161:45 pmDUB - ORD
Nonstop8h 00mFinnair
lun. 9/2910:20 pmORD - DUB
Nonstop7h 20mFinnair
Deal found 5/1$540
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 8/296:00 amORK - ORD
1 stop14h 10mDelta
dom. 8/311:35 pmORD - ORK
2 stops19h 05mDelta
Deal found 4/29$540
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.
jue. 5/811:35 amDUB - ORD
Nonstop8h 00mUnited Airlines
mié. 5/145:55 pmORD - DUB
1 stop10h 25mUnited Airlines
Deal found 4/30$541
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.
vie. 5/239:30 amSNN - ORD
Nonstop8h 15mUnited Airlines
mar. 5/276:05 pmORD - SNN
Nonstop7h 25mUnited Airlines
Deal found 4/29$541
This KLM 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/510:00 amDUB - MDW
1 stop14h 03mKLM
lun. 9/152:00 pmMDW - DUB
1 stop11h 55mKLM
Deal found 4/29$543
This Lufthansa 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/1111:35 amDUB - ORD
Nonstop8h 00mLufthansa
mié. 9/176:30 pmORD - DUB
1 stop16h 25mLufthansa
Deal found 4/29$549
This Bravofly 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 Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/2011:30 amDUB - ORD
Nonstop8h 30mAer Lingus
vie. 11/285:00 pmORD - DUB
1 stop11h 15mAer Lingus
Deal found 4/30$554
This American Airlines deal was found by Cheapflights users on 5/1. 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.
jue. 10/99:30 amDUB - ORD
1 stop14h 25mAmerican Airlines
mar. 10/1410:35 pmORD - DUB
1 stop12h 30mAmerican Airlines
Deal found 5/1$555

Cheapflights Fare Finder

Customize your flight search to find flights from Ireland to Illinois 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 mayo 1, 2025.
Use the filters below to find and compare flights from Ireland to Illinois that are best for you.

Fly from

Ireland

Fly to

Illinois

Route

Depart

Return

Price

DublinChicago

DUB - ORD

DUBORD

Dublin

dom. 5/18

5:55 am-6:37 pm

2 stops18h 42m

Chicago O'Hare Intl

lun. 5/26

6:30 pm-10:45 am

1 stop10h 15m

$534

DublinChicago

DUB - MDW

DUBMDW

Dublin

mié. 8/27

8:55 am-6:28 pm

2 stops15h 33m

Chicago Midway

dom. 8/31

1:00 pm-8:15 am

2 stops13h 15m

$535

DublinChicago

DUB - ORD

DUBORD

Dublin

sáb. 9/13

9:20 am-7:29 pm

2 stops16h 09m

Chicago O'Hare Intl

mié. 9/17

3:35 pm-7:45 am

1 stop10h 10m

$536

DublinChicago

DUB - ORD

DUBORD

Dublin

lun. 5/19

10:40 am-6:15 pm

1 stop13h 35m

Chicago O'Hare Intl

lun. 5/26

8:15 pm-9:45 am

Nonstop7h 30m

$537

DublinChicago

DUB - ORD

DUBORD

Dublin

mar. 9/16

1:45 pm-3:45 pm

Nonstop8h 00m

Chicago O'Hare Intl

lun. 9/29

10:20 pm-11:40 am

Nonstop7h 20m

$540

CorkChicago

ORK - ORD

ORKORD

Cork

vie. 8/29

6:00 am-2:10 pm

1 stop14h 10m

Chicago O'Hare Intl

dom. 8/31

1:35 pm-2:40 pm

2 stops19h 05m

$540

DublinChicago

DUB - ORD

DUBORD

Dublin

mar. 5/20

11:35 am-1:35 pm

Nonstop8h 00m

Chicago O'Hare Intl

mar. 5/27

8:15 pm-9:45 am

Nonstop7h 30m

$541

ShannonChicago

SNN - ORD

SNNORD

Shannon

vie. 5/23

9:30 am-11:45 am

Nonstop8h 15m

Chicago O'Hare Intl

mar. 5/27

1:04 pm-10:15 am

2 stops15h 11m

$542

DublinChicago

DUB - MDW

DUBMDW

Dublin

vie. 9/5

10:00 am-6:03 pm

1 stop14h 03m

Chicago Midway

lun. 9/15

2:00 pm-7:55 am

1 stop11h 55m

$543

DublinChicago

DUB - ORD

DUBORD

Dublin

jue. 9/11

11:35 am-1:35 pm

Nonstop8h 00m

Chicago O'Hare Intl

mié. 9/17

6:30 pm-4:55 pm

1 stop16h 25m

$549

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 Ireland to Illinois

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

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

Currently, August is the cheapest month in which you can book a flight from Ireland to Illinois (average of $245). Flying from Ireland to Illinois in March is currently the most expensive (average of $321). 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 IE to IL?

Find hourly flight availability from Ireland to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated mayo 1, 2025.

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

Weekly flight availability from Ireland to Illinois

Explore weekly flight availability from Ireland to Illinois. 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 mayo 1, 2025.

The most flights from IE0 to USIL are scheduled on a Thursday (12 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 Illinois by month

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

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

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

If weather is an important factor for your trip to Illinois, 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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated mayo 1, 2025.
To help decide which airline to fly from Ireland to Illinois, see what other customers have to say about Delta, KLM and Finnair. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,934 reviews
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
KLM
7.8
Good
1,334 reviews
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Finnair
7.6
Good
1,275 reviews
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
SWISS
7.5
Good
1,588 reviews
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Air France
7.4
Good
1,446 reviews
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

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

    For one-way options, check prices for Aer Lingus. According to our data, you can fly for as low as $447. Users have also found prices from $471 and $472 on WestJet and Icelandair, respectively.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Ireland to Illinois (average of $245). Flying from Ireland to Illinois in March is currently the most expensive (average of $321). 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 Ireland to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Ireland to Illinois

Discover the top 3 airlines that operate flights from Ireland to Illinois. 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 mayo 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$368Average$795FlexibilityNo cancel feeOn-time70%
Aer LingusCheapest$401Average$574FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$648Average$730FlexibilityNo cancel feeOn-time69%

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