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Illinois

$280+ 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 5/6. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — ORD
Apr 8 — Apr 151
Tue 4/8
Tue 4/15
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 April 3, 2025.

Round-trip from

$511
(KLM)

One-way from

$297
(Kiwi.com)

Popular in

July

Cheapest in

November

Average price

$493

Good round-trip deal

$694 or less

Good one-way deal

$540 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 ($113 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 3, 2025.

This Delta deal was found by Cheapflights users on 4/2. 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.
Thu 4/108:55 amDUB - ORD
1 stop11h 15mDelta
Thu 4/179:55 amORD - DUB
1 stop16h 50mDelta
Deal found 4/2$511
This KLM deal was found by Cheapflights users on 4/1. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/148:45 pmDUB - ORD
1 stop23h 55mKLM
Sun 4/2012:15 pmORD - DUB
1 stop13h 30mKLM
Deal found 4/1$512
This CheapTickets.ch deal was found by Cheapflights users on 3/31. 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 CheapTickets.ch is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/155:55 amDUB - MDW
2 stops17h 50mKLM
Thu 5/296:31 pmMDW - DUB
1 stop32h 14mKLM
Deal found 3/31$512
This Delta deal was found by Cheapflights users on 4/2. 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.
Thu 4/105:55 amDUB - MDW
2 stops18h 07mDelta
Sat 4/195:59 pmMDW - DUB
2 stops15h 01mDelta
Deal found 4/2$514
This Iberia deal was found by Cheapflights users on 4/2. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/298:35 amDUB - ORD
1 stop15h 40mMultiple Airlines
Sun 8/3110:20 pmORD - DUB
Nonstop7h 20mMultiple Airlines
Deal found 4/2$520
This Air France deal was found by Cheapflights users on 4/1. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/16:00 amORK - ORD
1 stop14h 10mMultiple Airlines
Tue 5/66:15 pmORD - ORK
2 stops14h 25mMultiple Airlines
Deal found 4/1$520
This American Airlines deal was found by Cheapflights users on 4/1. 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.
Thu 4/109:30 amDUB - ORD
1 stop11h 33mAmerican Airlines
Wed 4/1610:28 amORD - DUB
1 stop13h 02mAmerican Airlines
Deal found 4/1$524
This CheapTickets.ch deal was found by Cheapflights users on 4/1. 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 CheapTickets.ch is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/1511:00 amDUB - MDW
1 stop12h 43mAir France
Thu 5/291:55 pmMDW - DUB
1 stop11h 50mAir France
Deal found 4/1$524
This Bravofly deal was found by Cheapflights users on 4/2. 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 Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/1111:45 amDUB - ORD
2 stops34h 25mScandinavian Airlines
Thu 8/287:15 pmORD - DUB
2 stops42h 00mScandinavian Airlines
Deal found 4/2$528
This Air France deal was found by Cheapflights users on 4/1. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/16:00 amORK - MDW
2 stops16h 12mMultiple Airlines
Tue 5/65:59 pmMDW - ORK
2 stops14h 41mMultiple Airlines
Deal found 4/1$529
This Travelocity deal was found by Cheapflights users on 4/2. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/89:30 amDUB - ORD
1 stop16h 31mIberia
Tue 4/152:55 pmORD - DUB
1 stop9h 35mIberia
Deal found 4/2$533
This British Airways deal was found by Cheapflights users on 4/2. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1012:45 pmDUB - ORD
1 stop11h 30mBritish Airways
Wed 4/164:49 pmORD - DUB
2 stops15h 46mBritish Airways
Deal found 4/2$535

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 April 3, 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

Sun 4/13

5:20 pm-2:10 pm

1 stop26h 50m

Chicago O'Hare Intl

Sun 4/20

12:15 pm-7:45 am

1 stop13h 30m

$511

DublinChicago

DUB - ORD

DUBORD

Dublin

Mon 4/14

8:55 am-2:10 pm

1 stop11h 15m

Chicago O'Hare Intl

Mon 4/21

10:25 am-10:45 am

1 stop18h 20m

$512

DublinChicago

DUB - MDW

DUBMDW

Dublin

Thu 5/15

5:55 am-5:45 pm

2 stops17h 50m

Chicago Midway

Thu 5/29

6:31 pm-8:45 am

1 stop32h 14m

$512

DublinChicago

DUB - MDW

DUBMDW

Dublin

Thu 5/15

5:55 am-6:45 pm

2 stops18h 50m

Chicago Midway

Thu 5/29

9:20 am-7:45 am

1 stop16h 25m

$517

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 8/29

8:35 am-6:15 pm

1 stop15h 40m

Chicago O'Hare Intl

Sun 8/31

10:20 pm-11:40 am

Nonstop7h 20m

$520

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 4/17

9:30 am-5:36 pm

1 stop14h 06m

Chicago O'Hare Intl

Mon 4/21

10:28 am-5:30 am

1 stop13h 02m

$524

DublinChicago

DUB - MDW

DUBMDW

Dublin

Thu 5/15

11:00 am-5:43 pm

1 stop12h 43m

Chicago Midway

Thu 5/29

1:55 pm-7:45 am

1 stop11h 50m

$524

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 6/11

11:45 am-4:10 pm

2 stops34h 25m

Chicago O'Hare Intl

Thu 8/28

7:15 pm-7:15 pm

2 stops42h 00m

$528

ShannonChicago

SNN - ORD

SNNORD

Shannon

Fri 9/5

1:05 pm-9:34 pm

1 stop14h 29m

Chicago O'Hare Intl

Mon 9/15

6:10 pm-11:10 am

1 stop11h 00m

$537

ShannonChicago

SNN - ORD

SNNORD

Shannon

Fri 5/23

1:05 pm-9:51 am

1 stop26h 46m

Chicago O'Hare Intl

Tue 5/27

6:18 pm-11:10 am

1 stop10h 52m

$538

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/1

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 April 3, 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 April 3, 2025.

The most flights from IE0 to USIL are scheduled on a Monday (11 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (10 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 April 3, 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
7,897 reviews

Overall

8.0

Boarding

8.2

Food

7.3

Comfort

8.0

Crew

8.5

Entertainment

7.9

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
7,897 reviews
Delta
8.0
Very good
7,897 reviews

Overall

8.0

Boarding

8.2

Food

7.3

Comfort

8.0

Crew

8.5

Entertainment

7.9

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
1,323 reviews
Delta
8.0
Very good
7,897 reviews

Overall

8.0

Boarding

8.2

Food

7.3

Comfort

8.0

Crew

8.5

Entertainment

7.9

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
1,267 reviews
Delta
8.0
Very good
7,897 reviews

Overall

8.0

Boarding

8.2

Food

7.3

Comfort

8.0

Crew

8.5

Entertainment

7.9

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
1,574 reviews
Delta
8.0
Very good
7,897 reviews

Overall

8.0

Boarding

8.2

Food

7.3

Comfort

8.0

Crew

8.5

Entertainment

7.9

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
1,427 reviews
Delta
8.0
Very good
7,897 reviews

Overall

8.0

Boarding

8.2

Food

7.3

Comfort

8.0

Crew

8.5

Entertainment

7.9

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 WestJet. According to our data, you can fly for as low as $328. Users have also found prices from $336 and $427 on Icelandair and TAP AIR PORTUGAL, 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

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.
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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 April 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$368Average$795FlexibilityNo cancel feeOn-time70%
Aer LingusCheapest$401Average$570FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$648Average$745FlexibilityNo cancel feeOn-time69%

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