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Illinois

$405+ 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 9/8. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — ORD
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$462
(United Airlines)

One-way from

$405
(Kiwi.com)

Popular in

July

Cheapest in

November

Average price

$657

Good round-trip deal

$702 or less

Good one-way deal

$531 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. 14% potential increase in price ($99 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($14 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 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 June 12, 2025.

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.
Fri 9/59:30 amSNN - ORD
Nonstop8h 15mUnited Airlines
Mon 9/1512:50 pmORD - SNN
2 stops15h 25mUnited Airlines
Deal found 6/10$462
This Billigflug 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 Billigflug is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/159:30 amDUB - ORD
1 stop29h 15mMultiple Airlines
Tue 7/2210:30 pmORD - DUB
1 stop12h 35mMultiple Airlines
Deal found 6/9$530
This Scandinavian 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2911:30 amDUB - ORD
2 stops35h 15mScandinavian Airlines
Tue 11/411:00 amORD - DUB
2 stops18h 45mScandinavian Airlines
Deal found 6/10$531
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/305:55 amDUB - ORD
2 stops15h 09mDelta
Wed 9/36:20 pmORD - DUB
2 stops14h 40mDelta
Deal found 6/11$532
This Austrian 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/135:55 amDUB - ORD
2 stops37h 25mAustrian Airlines
Mon 9/294:20 pmORD - DUB
2 stops23h 55mAustrian Airlines
Deal found 6/10$533
This Delta deal was found by Cheapflights users on 6/12. 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.
Wed 8/275:55 amDUB - MDW
2 stops18h 42mDelta
Sun 8/316:17 pmMDW - DUB
1 stop9h 43mDelta
Deal found 6/12$533
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/188:40 amDUB - ORD
1 stop12h 45mAmerican Airlines
Thu 1/14:45 pmORD - DUB
2 stops13h 35mAmerican Airlines
Deal found 6/11$534
This British Airways 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/216:30 pmDUB - ORD
1 stop25h 25mBritish Airways
Tue 12/305:00 pmORD - DUB
1 stop13h 05mBritish Airways
Deal found 6/11$536
This United Airlines deal was found by Cheapflights users on 6/12. 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.
Tue 8/129:20 amDUB - ORD
1 stop11h 35mUnited Airlines
Sat 9/278:20 pmORD - DUB
Nonstop7h 25mUnited Airlines
Deal found 6/12$537
This SmartFares 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/81:15 pmDUB - MDW
2 stops38h 11mAir France
Mon 9/155:59 pmMDW - DUB
1 stop10h 01mAir France
Deal found 6/11$545
This Bravofly 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 Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/137:30 amDUB - ORD
1 stop12h 20mAer Lingus
Sun 10/199:15 pmORD - DUB
Nonstop7h 25mAer Lingus
Deal found 6/11$546
This KLM deal was found by Cheapflights users on 6/12. 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 8/118:55 amDUB - ORD
1 stop11h 15mKLM
Tue 9/304:20 pmORD - DUB
1 stop12h 05mKLM
Deal found 6/12$552

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 June 12, 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

ShannonChicago

SNN - ORD

SNNORD

Shannon

Fri 9/5

9:30 am-11:45 am

Nonstop8h 15m

Chicago O'Hare Intl

Mon 9/15

6:00 pm-7:30 am

Nonstop7h 30m

$462

DublinChicago

DUB - ORD

DUBORD

Dublin

Tue 7/15

9:30 am-8:45 am

1 stop29h 15m

Chicago O'Hare Intl

Tue 7/22

10:30 pm-5:05 pm

1 stop12h 35m

$530

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 10/29

11:30 am-5:45 pm

2 stops35h 15m

Chicago O'Hare Intl

Tue 11/4

11:00 am-11:45 am

2 stops18h 45m

$531

DublinChicago

DUB - ORD

DUBORD

Dublin

Sat 8/30

5:55 am-3:04 pm

2 stops15h 09m

Chicago O'Hare Intl

Wed 9/3

6:20 pm-3:00 pm

2 stops14h 40m

$532

DublinChicago

DUB - ORD

DUBORD

Dublin

Sat 9/13

5:55 am-1:20 pm

2 stops37h 25m

Chicago O'Hare Intl

Sat 9/27

4:20 pm-4:55 pm

2 stops42h 35m

$533

DublinChicago

DUB - MDW

DUBMDW

Dublin

Wed 8/27

5:55 am-6:37 pm

2 stops18h 42m

Chicago Midway

Sun 8/31

6:17 pm-10:00 am

1 stop9h 43m

$533

DublinChicago

DUB - ORD

DUBORD

Dublin

Tue 8/12

9:20 am-2:55 pm

1 stop11h 35m

Chicago O'Hare Intl

Sat 9/27

8:20 pm-9:45 am

Nonstop7h 25m

$537

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 10/29

8:30 pm-9:25 pm

2 stops29h 55m

Chicago O'Hare Intl

Mon 11/3

6:54 pm-7:35 pm

2 stops18h 41m

$540

DublinChicago

DUB - MDW

DUBMDW

Dublin

Mon 9/8

1:15 pm-9:26 pm

2 stops38h 11m

Chicago Midway

Mon 9/15

5:59 pm-10:00 am

1 stop10h 01m

$545

DublinChicago

DUB - ORD

DUBORD

Dublin

Mon 10/13

7:30 am-1:50 pm

1 stop12h 20m

Chicago O'Hare Intl

Sun 10/19

9:15 pm-10:40 am

Nonstop7h 25m

$546

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

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 June 12, 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 June 12, 2025.

The most flights from IE0 to USIL are scheduled on a Monday (17 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (16 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 June 12, 2025.
To help decide which airline to fly from Ireland to Illinois, see what other customers have to say about Delta, KLM and Austrian Airlines. 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
7,950 reviews

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

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

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

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

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

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

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

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!
Finnair
7.6
Good
1,290 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

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 France
7.5
Good
1,463 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

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 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 $418. Users have also found prices from $420 and $429 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

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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.
Charles de Gaulle to John F Kennedy Intl flights
Charles de Gaulle to Newark flights
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Bruxelles-National to Newark flights
Gatwick to LaGuardia flights
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Madrid to Newark flights
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Dublin to Newark flights
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Heathrow to Los Angeles flights
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Heathrow to Boston flights
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Vienna to Newark flights
Madrid to Miami flights
Frankfurt to Miami flights
Berlin to Newark flights
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Luton to John F Kennedy Intl flights
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Munich to Newark flights
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Orly to Miami flights

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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$408Average$579FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$667Average$775FlexibilityNo cancel feeOn-time69%

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