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Illinois

$302+ 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 5/17. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — ORD
Apr 22 — Apr 291
Wed 4/22
Wed 4/29
1 adult, Economy
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Cheap 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 March 23, 2026.

This oojo deal was found by Cheapflights users on 3/18. 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.
Fri 5/2211:10 am
DUB
-
ORD
2 stops35h 00m
Scandinavian Airlines
Tue 6/27:15 pm
ORD
-
DUB
1 stop17h 05m
Scandinavian Airlines
Deal found 3/18$461
This SmartFares deal was found by Cheapflights users on 3/21. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/257:05 pm
DUB
-
ORD
1 stop27h 40m
Scandinavian Airlines
Tue 12/17:20 pm
ORD
-
DUB
1 stop17h 00m
Scandinavian Airlines
Deal found 3/21$472
This SmartFares deal was found by Cheapflights users on 3/20. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/147:05 pm
DUB
-
ORD
1 stop27h 05m
Scandinavian Airlines
Thu 5/287:15 pm
ORD
-
DUB
1 stop17h 05m
Scandinavian Airlines
Deal found 3/20$475
This Kiwi.com deal was found by Cheapflights users on 3/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/1510:40 am
DUB
-
ORD
1 stop37h 35m
Turkish Airlines
Wed 4/228:10 pm
ORD
-
DUB
1 stop20h 55m
Turkish Airlines
Deal found 3/18$484
This Mytrip deal was found by Cheapflights users on 3/22. 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.
Fri 11/67:05 pm
DUB
-
ORD
1 stop27h 40m
Scandinavian Airlines
Sun 11/157:20 pm
ORD
-
DUB
1 stop17h 00m
Scandinavian Airlines
Deal found 3/22$490
This Trip.com deal was found by Cheapflights users on 3/19. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/217:05 pm
DUB
-
ORD
1 stop27h 05m
Scandinavian Airlines
Thu 5/287:15 pm
ORD
-
DUB
1 stop17h 05m
Scandinavian Airlines
Deal found 3/19$493
This Gotogate deal was found by Cheapflights users on 3/21. 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.
Fri 10/237:50 pm
DUB
-
ORD
2 stops51h 55m
Scandinavian Airlines
Mon 10/268:20 pm
ORD
-
DUB
2 stops33h 25m
Scandinavian Airlines
Deal found 3/21$495
This TravelUp deal was found by Cheapflights users on 3/20. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/278:05 pm
SNN
-
ORD
1 stop23h 45m
British Airways
Mon 1/46:50 pm
ORD
-
SNN
1 stop10h 40m
British Airways
Deal found 3/20$650
This KLM deal was found by Cheapflights users on 3/18. 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.
Mon 4/136:15 am
ORK
-
ORD
1 stop14h 15m
KLM
Sun 4/195:10 pm
ORD
-
ORK
1 stop15h 30m
KLM
Deal found 3/18$652
This KLM deal was found by Cheapflights users on 3/20. 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.
Thu 4/25:10 pm
ORK
-
ORD
1 stop27h 05m
Multiple Airlines
Tue 4/75:50 pm
ORD
-
ORK
2 stops14h 50m
Multiple Airlines
Deal found 3/20$654
This British Airways deal was found by Cheapflights users on 3/20. 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.
Sun 12/278:05 pm
SNN
-
ORD
1 stop23h 45m
Multiple Airlines
Tue 1/512:31 pm
ORD
-
SNN
2 stops16h 59m
Multiple Airlines
Deal found 3/20$655
This Expedia deal was found by Cheapflights users on 3/21. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/288:05 pm
SNN
-
ORD
1 stop25h 15m
British Airways
Mon 1/45:10 pm
ORD
-
SNN
1 stop20h 15m
British Airways
Deal found 3/21$657

Find flight deals from Ireland to Illinois

Keep the following information in mind while searching for Ireland to Illinois flight deals. Data was last updated March 23, 2026.

Round-trip from

$461
(oojo)

One-way from

$302
(Kiwi.com)

Popular in

August

Cheapest in

September

Average price

$631

Good round-trip deal

$646 or less

Good one-way deal

$586 or less
From Ireland to Illinois
Search Deals
One-way flight from Ireland to Illinois
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($35 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals
Price to beat on a round-trip flight from Ireland to Illinois.
Search Deals
Price to beat on a one-way flight from Ireland to Illinois.
Search Deals

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 March 23, 2026.
Use the filters below to find and compare flights from Ireland to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 4/16

2:15 pm-6:15 pm

1 stop10h 00m

Chicago O'Hare Intl

Sun 4/19

7:25 pm-1:15 pm

1 stop11h 50m

$594
Quickest round-trip

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 5/15

9:30 am-11:30 am

Nonstop8h 00m

Chicago O'Hare Intl

Mon 5/25

10:20 pm-11:50 am

Nonstop7h 30m

$630

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 5/8

9:30 am-11:30 am

Nonstop8h 00m

Chicago O'Hare Intl

Sun 5/17

7:15 am-9:35 am

1 stop20h 20m

$648

CorkChicago

ORK - ORD

ORKORD

Cork

Mon 4/13

6:15 am-2:30 pm

1 stop14h 15m

Chicago O'Hare Intl

Sun 4/19

5:10 pm-2:40 pm

1 stop15h 30m

$652

CorkChicago

ORK - ORD

ORKORD

Cork

Fri 4/24

6:15 am-2:15 pm

1 stop14h 00m

Chicago O'Hare Intl

Tue 4/28

5:10 pm-2:40 pm

1 stop15h 30m

$654

CorkChicago

ORK - ORD

ORKORD

Cork

Mon 5/4

6:15 am-2:30 pm

1 stop14h 15m

Chicago O'Hare Intl

Mon 5/11

5:19 pm-2:40 pm

2 stops15h 21m

$654

CorkChicago

ORK - ORD

ORKORD

Cork

Thu 4/2

6:15 am-2:15 pm

1 stop14h 00m

Chicago O'Hare Intl

Tue 4/7

5:10 pm-2:40 pm

1 stop15h 30m

$654

CorkChicago

ORK - ORD

ORKORD

Cork

Fri 4/24

6:15 am-2:15 pm

1 stop14h 00m

Chicago O'Hare Intl

Tue 4/28

1:36 pm-2:40 pm

2 stops19h 04m

$654

CorkChicago

ORK - ORD

ORKORD

Cork

Thu 4/2

6:15 am-2:15 pm

1 stop14h 00m

Chicago O'Hare Intl

Tue 4/7

5:40 pm-2:40 pm

2 stops15h 00m

$658

CorkChicago

ORK - ORD

ORKORD

Cork

Mon 4/13

6:15 am-9:29 pm

2 stops21h 14m

Chicago O'Hare Intl

Sun 4/19

5:10 pm-2:40 pm

1 stop15h 30m

$660

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/19

Showing 1-10 of 60 resultsSorted by cheapest first
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2
3
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6

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, March is the cheapest month in which you can book a flight from Ireland to Illinois (average of $414). Flying from Ireland to Illinois in July is currently the most expensive (average of $638). 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 March 23, 2026.

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 March 23, 2026.

The most flights from IE0 to USIL are scheduled on a Sunday (13 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (5 on average).

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 March 23, 2026.
Peruse reviews from past customers who have flown with United Airlines and Aer Lingus from Ireland to Illinois to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,462 reviews

Crew

8.1

Overall

7.4

Comfort

7.3

Food

6.6

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
United Airlines
7.4
Good
9,462 reviews
United Airlines
7.4
Good
9,462 reviews

Crew

8.1

Overall

7.4

Comfort

7.3

Food

6.6

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
Aer Lingus
7.2
Good
1,482 reviews
United Airlines
7.4
Good
9,462 reviews

Crew

8.1

Overall

7.4

Comfort

7.3

Food

6.6

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.

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.

  • How long is the flight from Ireland to Illinois?

    There are many flights that can get you from Ireland to Illinois in 8h. Fly via Icelandair, Finnair, or American Airlines to get the fastest option. Airlines will cover a distance of 3661 mi. This flight may include one or multiple stops.

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

    For one-way options, check prices for Icelandair. According to our data, you can fly for as low as $316. Users have also found prices from $413 and $438 on Finnair and Aer Lingus, 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, March is the cheapest month in which you can book a flight from Ireland to Illinois (average of $414). Flying from Ireland to Illinois in July is currently the most expensive (average of $638). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 2 airlines flying from Ireland to Illinois

Discover the top 2 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 March 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$463Average$648FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$479Average$680FlexibilityNo cancel feeOn-time69%

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