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Illinois

$438+ 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 5/15. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — ORD
Apr 29 — May 61
Tue 4/29
Tue 5/6
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 24, 2025.

Round-trip from

$513
(Gotogate)

One-way from

$438
(Mytrip)

Popular in

July

Cheapest in

November

Average price

$555

Good round-trip deal

$703 or less

Good one-way deal

$547 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. 15% potential increase in price ($108 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 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 24, 2025.

This TravelUp deal was found by Cheapflights users on 4/23. 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.
Fri 5/2311:35 amDUB - ORD
Nonstop8h 00mMultiple Airlines
Fri 5/308:15 pmORD - DUB
Nonstop7h 30mMultiple Airlines
Deal found 4/23$515
This Gotogate deal was found by Cheapflights users on 4/23. 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.
Mon 6/169:20 amDUB - ORD
1 stop30h 32mAir Canada
Mon 6/303:35 pmORD - DUB
1 stop34h 10mAir Canada
Deal found 4/23$516
This Expedia deal was found by Cheapflights users on 4/23. 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.
Thu 5/14:40 pmDUB - ORD
Nonstop8h 20mAer Lingus
Thu 5/83:45 pmORD - DUB
Nonstop7h 25mAer Lingus
Deal found 4/23$518
This Booking.com deal was found by Cheapflights users on 4/23. 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.
Thu 5/222:15 pmDUB - ORD
1 stop13h 00mIcelandair
Wed 5/287:25 pmORD - DUB
1 stop11h 50mIcelandair
Deal found 4/23$519
This United Airlines deal was found by Cheapflights users on 4/23. 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 5/239:20 amDUB - ORD
1 stop35h 23mUnited Airlines
Sun 5/251:04 pmORD - DUB
1 stop12h 06mUnited Airlines
Deal found 4/23$520
This FlightHub deal was found by Cheapflights users on 4/23. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/111:45 amDUB - ORD
2 stops34h 25mScandinavian Airlines
Wed 10/227:30 amORD - DUB
2 stops28h 45mScandinavian Airlines
Deal found 4/23$521
This Cheapflightsfares deal was found by Cheapflights users on 4/23. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/171:45 pmDUB - ORD
Nonstop8h 00mIberia
Thu 7/2410:25 pmORD - DUB
Nonstop7h 15mIberia
Deal found 4/23$526
This Iberia deal was found by Cheapflights users on 4/23. 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.
Thu 5/112:45 pmDUB - ORD
1 stop11h 30mBritish Airways
Fri 5/97:15 pmORD - DUB
1 stop18h 05mBritish Airways
Deal found 4/23$527
This Delta deal was found by Cheapflights users on 4/24. 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 5/95:55 amDUB - MDW
2 stops17h 50mDelta
Mon 5/126:25 pmMDW - DUB
1 stop9h 35mDelta
Deal found 4/24$532
This Delta deal was found by Cheapflights users on 4/23. 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 5/38:55 amDUB - ORD
1 stop11h 15mDelta
Sat 5/247:10 amORD - DUB
2 stops19h 10mDelta
Deal found 4/23$533
This TravelUp deal was found by Cheapflights users on 4/23. 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.
Mon 11/179:45 amDUB - MDW
1 stop14h 13mKLM
Mon 12/110:35 amMDW - DUB
1 stop15h 10mKLM
Deal found 4/23$536
This Air France deal was found by Cheapflights users on 4/23. 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
Mon 5/55:10 pmORD - ORK
1 stop15h 30mMultiple Airlines
Deal found 4/23$543

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 24, 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

Mon 6/16

9:20 am-9:52 am

1 stop30h 32m

Chicago O'Hare Intl

Mon 6/30

3:35 pm-7:45 am

1 stop34h 10m

$513

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 5/23

11:35 am-1:35 pm

Nonstop8h 00m

Chicago O'Hare Intl

Fri 5/30

8:15 pm-9:45 am

Nonstop7h 30m

$515

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 5/23

9:20 am-2:43 pm

1 stop35h 23m

Chicago O'Hare Intl

Sun 5/25

1:04 pm-7:10 am

1 stop12h 06m

$520

DublinChicago

DUB - ORD

DUBORD

Dublin

Tue 6/17

1:45 pm-3:45 pm

Nonstop8h 00m

Chicago O'Hare Intl

Thu 7/24

10:25 pm-11:40 am

Nonstop7h 15m

$521

DublinChicago

DUB - ORD

DUBORD

Dublin

Sat 9/20

8:35 am-3:55 pm

1 stop13h 20m

Chicago O'Hare Intl

Sat 10/4

4:55 pm-9:35 am

1 stop10h 40m

$526

DublinChicago

DUB - ORD

DUBORD

Dublin

Sat 5/3

8:35 am-3:55 pm

1 stop13h 20m

Chicago O'Hare Intl

Mon 5/12

7:15 pm-11:50 am

1 stop10h 35m

$527

DublinChicago

DUB - ORD

DUBORD

Dublin

Sat 5/3

5:55 am-2:10 pm

1 stop14h 15m

Chicago O'Hare Intl

Sat 5/24

3:30 pm-10:45 am

1 stop13h 15m

$531

DublinChicago

DUB - MDW

DUBMDW

Dublin

Fri 5/9

5:55 am-5:45 pm

2 stops17h 50m

Chicago Midway

Mon 5/12

6:25 pm-10:00 am

1 stop9h 35m

$532

DublinChicago

DUB - ORD

DUBORD

Dublin

Sat 5/3

5:55 am-2:10 pm

1 stop14h 15m

Chicago O'Hare Intl

Sat 5/24

10:05 am-10:45 am

1 stop18h 40m

$533

DublinChicago

DUB - MDW

DUBMDW

Dublin

Tue 9/16

10:00 am-6:36 pm

1 stop14h 36m

Chicago Midway

Mon 9/29

2:00 pm-7:55 am

1 stop11h 55m

$544

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/22

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 24, 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 24, 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 24, 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
7,920 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Boarding

8.2

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
7,920 reviews
Delta
8.0
Very good
7,920 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Boarding

8.2

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
1,333 reviews
Delta
8.0
Very good
7,920 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Boarding

8.2

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
1,272 reviews
Delta
8.0
Very good
7,920 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Boarding

8.2

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
1,582 reviews
Delta
8.0
Very good
7,920 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Boarding

8.2

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
1,442 reviews
Delta
8.0
Very good
7,920 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Boarding

8.2

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 WestJet. According to our data, you can fly for as low as $448. Users have also found prices from $455 and $464 on Aer Lingus 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.
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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 24, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$368Average$795FlexibilityNo cancel feeOn-time70%
Aer LingusCheapest$401Average$572FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$648Average$730FlexibilityNo cancel feeOn-time69%

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