Illinois

$248+ 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 4/14. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — ORD
Mar 6 — Mar 131
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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 February 4, 2026.

This SmartFares deal was found by Cheapflights users on 2/2. 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.
Sun 3/17:05 pm
DUB
-
ORD
1 stop27h 40m
Scandinavian Airlines
Mon 3/98:20 pm
ORD
-
DUB
1 stop17h 00m
Scandinavian Airlines
Deal found 2/2$429
This Kiwi.com deal was found by Cheapflights users on 2/2. 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.
Sat 2/2110:10 am
DUB
-
ORD
1 stop12h 35m
Scandinavian Airlines
Wed 2/257:20 pm
ORD
-
DUB
1 stop17h 00m
Scandinavian Airlines
Deal found 2/2$431
This Trip.com deal was found by Cheapflights users on 2/2. 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.
Fri 4/1712:40 pm
DUB
-
ORD
1 stop33h 30m
Scandinavian Airlines
Mon 4/207:15 pm
ORD
-
DUB
1 stop17h 05m
Scandinavian Airlines
Deal found 2/2$445
This Finnair deal was found by Cheapflights users on 2/3. 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.
Fri 5/159:30 am
DUB
-
ORD
Nonstop8h 00m
Finnair
Mon 5/2510:25 pm
ORD
-
DUB
Nonstop7h 25m
Finnair
Deal found 2/3$446
This deal was found by Cheapflights users on 2/3. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/611:30 am
DUB
-
ORD
1 stop11h 50m
Icelandair
Tue 3/177:30 pm
ORD
-
DUB
1 stop9h 45m
Icelandair
Deal found 2/3$448
This Kiwi.com deal was found by Cheapflights users on 2/2. 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.
Sat 2/2110:10 am
DUB
-
ORD
1 stop12h 35m
Scandinavian Airlines
Mon 2/237:20 pm
ORD
-
DUB
1 stop17h 00m
Scandinavian Airlines
Deal found 2/2$450
This Finnair deal was found by Cheapflights users on 2/3. 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.
Wed 5/138:35 am
DUB
-
ORD
1 stop12h 20m
Multiple Airlines
Tue 5/2610:25 pm
ORD
-
DUB
Nonstop7h 25m
Multiple Airlines
Deal found 2/3$453
This Finnair deal was found by Cheapflights users on 2/3. 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.
Tue 4/79:30 am
DUB
-
ORD
1 stop16h 27m
Multiple Airlines
Mon 4/135:00 pm
ORD
-
DUB
1 stop10h 40m
Multiple Airlines
Deal found 2/3$456
This SmartFares deal was found by Cheapflights users on 2/4. 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.
Sun 3/17:05 pm
DUB
-
ORD
1 stop27h 40m
Scandinavian Airlines
Sun 3/88:20 pm
ORD
-
DUB
1 stop17h 00m
Scandinavian Airlines
Deal found 2/4$459
This Finnair deal was found by Cheapflights users on 2/3. 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.
Thu 4/99:30 am
DUB
-
ORD
1 stop16h 27m
Multiple Airlines
Tue 4/1410:30 pm
ORD
-
DUB
1 stop14h 20m
Multiple Airlines
Deal found 2/3$461
This Delta deal was found by Cheapflights users on 2/2. 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 2/95:55 am
DUB
-
MDW
2 stops18h 00m
Delta
Mon 2/161:26 pm
MDW
-
DUB
2 stops20h 19m
Delta
Deal found 2/2$538
This Delta deal was found by Cheapflights users on 2/4. 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 2/135:55 am
DUB
-
MDW
2 stops18h 45m
Delta
Sun 2/221:49 pm
MDW
-
DUB
1 stop11h 56m
Delta
Deal found 2/4$540

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 February 4, 2026.

Round-trip from

$429
(SmartFares)

One-way from

$248
(Trip.com)

Popular in

July

Cheapest in

November

Average price

$559

Good round-trip deal

$686 or less

Good one-way deal

$506 or less
From Ireland to Illinois
One-way flight from Ireland to Illinois
Highest demand for flights based on searches. 13% potential increase in price ($91 potential increase over avg. RT price).
Cheapest flight prices on average. 1% potential price decrease ($12 potential savings vs. average RT price).
Average for round-trip flights in February 2026
Price to beat on a round-trip flight from Ireland to Illinois.
Price to beat on a one-way flight from Ireland to Illinois.

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 February 4, 2026.
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

Wed 5/13

9:30 am-11:30 am

Nonstop8h 00m

Chicago O'Hare Intl

Tue 5/26

10:25 pm-11:50 am

Nonstop7h 25m

$445

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 5/22

9:30 am-11:30 am

Nonstop8h 00m

Chicago O'Hare Intl

Tue 6/2

10:25 pm-11:50 am

Nonstop7h 25m

$449

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 5/15

9:30 am-11:30 am

Nonstop8h 00m

Chicago O'Hare Intl

Mon 5/25

10:25 pm-11:50 am

Nonstop7h 25m

$449

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 5/13

8:35 am-2:55 pm

1 stop12h 20m

Chicago O'Hare Intl

Tue 5/26

10:25 pm-11:50 am

Nonstop7h 25m

$453

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 4/9

9:30 am-7:57 pm

1 stop16h 27m

Chicago O'Hare Intl

Tue 4/14

10:30 pm-6:50 pm

1 stop14h 20m

$461

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 4/22

9:30 am-7:57 pm

1 stop16h 27m

Chicago O'Hare Intl

Sun 4/26

12:30 pm-9:45 am

1 stop15h 15m

$477

DublinChicago

DUB - ORD

DUBORD

Dublin

Sun 3/1

5:55 am-2:20 pm

1 stop14h 25m

Chicago O'Hare Intl

Wed 3/11

5:25 pm-4:20 pm

1 stop17h 55m

$538

DublinChicago

DUB - ORD

DUBORD

Dublin

Sun 2/22

5:55 am-6:01 pm

2 stops18h 06m

Chicago O'Hare Intl

Wed 3/4

10:36 am-8:00 am

2 stops15h 24m

$538

DublinChicago

DUB - MDW

DUBMDW

Dublin

Wed 2/18

5:55 am-5:37 pm

2 stops17h 42m

Chicago Midway

Sun 2/22

10:49 am-7:45 am

1 stop14h 56m

$541

DublinChicago

DUB - MDW

DUBMDW

Dublin

Sun 2/22

5:55 am-6:40 pm

2 stops18h 45m

Chicago Midway

Wed 3/4

10:49 am-8:45 am

2 stops15h 56m

$541

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/3

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, March is the cheapest month in which you can book a flight from Ireland to Illinois (average of $400). Flying from Ireland to Illinois in July is currently the most expensive (average of $637). 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 February 4, 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 February 4, 2026.

The most flights from IE0 to USIL are scheduled on a Monday (9 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (4 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 February 4, 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.

Entertainment

7.1

Boarding

7.7

Crew

8.1

Food

6.6

Overall

7.4

Comfort

7.3

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats

Entertainment

7.1

Boarding

7.7

Crew

8.1

Food

6.6

Overall

7.4

Comfort

7.3

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats

Entertainment

7.1

Boarding

7.7

Crew

8.1

Food

6.6

Overall

7.4

Comfort

7.3

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats

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 Finnair, Delta, or KLM 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 $322. Users have also found prices from $413 and $428 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 $400). Flying from Ireland to Illinois in July is currently the most expensive (average of $637). 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 Ireland to Illinois

See prices for flight routes from nearby airports that may be better suited for you.

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 February 4, 2026.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$466Average$640FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$479Average$680FlexibilityNo cancel feeOn-time69%

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