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$350+ 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 1/27. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — ORD
Nov 26 — Dec 31
Tue 11/26
Tue 12/3
1 adult, Economy
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Cheap flight deals from Ireland to Illinois

Discover tips and strategies to find the most affordable flight options for your journey from Ireland (IE0) to Illinois (USIL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated November 21, 2024.

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 November 21, 2024.

This Fly & Visit Rome deal was found by Cheapflights users on 11/21. 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 Fly & Visit Rome is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/163:20 pmDUB - ORD
Nonstop8h 35mAer Lingus
Mon 12/303:55 pmORD - DUB
Nonstop7h 20mAer Lingus
Deal found 11/21$494
This oojo deal was found by Cheapflights users on 11/20. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1212:05 pmDUB - ORD
2 stops33h 45mScandinavian Airlines
Thu 1/97:10 pmORD - DUB
1 stop32h 15mScandinavian Airlines
Deal found 11/20$502
This British Airways deal was found by Cheapflights users on 11/20. 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.
Mon 12/238:40 amDUB - ORD
1 stop12h 05mBritish Airways
Sat 1/119:45 pmORD - DUB
1 stop11h 15mBritish Airways
Deal found 11/20$504
This Gotogate deal was found by Cheapflights users on 11/21. 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 12/65:00 amDUB - ORD
1 stop21h 05mLufthansa
Tue 12/109:25 pmORD - DUB
1 stop30h 35mLufthansa
Deal found 11/21$505
This Delta deal was found by Cheapflights users on 11/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/125:55 amDUB - ORD
2 stops17h 03mDelta
Fri 1/1710:05 amORD - DUB
2 stops16h 00mDelta
Deal found 11/21$507
This Delta deal was found by Cheapflights users on 11/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/125:55 amDUB - MDW
2 stops18h 37mDelta
Thu 1/99:34 amMDW - DUB
2 stops17h 11mDelta
Deal found 11/21$508
This KLM deal was found by Cheapflights users on 11/21. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/35:25 pmDUB - ORD
1 stop27h 05mKLM
Mon 12/162:05 pmORD - DUB
1 stop12h 20mKLM
Deal found 11/21$509
This KLM deal was found by Cheapflights users on 11/21. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/51:25 pmORK - ORD
1 stop31h 05mKLM
Mon 12/94:25 pmORD - ORK
1 stop23h 25mKLM
Deal found 11/21$516
This TravelUp deal was found by Cheapflights users on 11/20. 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.
Mon 12/238:40 amDUB - ORD
1 stop12h 05mMultiple Airlines
Tue 12/312:53 pmORD - DUB
1 stop11h 47mMultiple Airlines
Deal found 11/20$520
This United Airlines deal was found by Cheapflights users on 11/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/49:00 amDUB - ORD
1 stop11h 51mUnited Airlines
Sat 12/141:19 pmORD - DUB
1 stop14h 46mUnited Airlines
Deal found 11/21$527
This American Airlines deal was found by Cheapflights users on 11/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/58:40 amDUB - ORD
1 stop12h 05mAmerican Airlines
Tue 12/175:09 pmORD - DUB
1 stop9h 31mAmerican Airlines
Deal found 11/21$530
This Bravofly deal was found by Cheapflights users on 11/21. 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 Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/42:05 pmDUB - ORD
1 stop11h 38mIberia
Sun 12/152:55 pmORD - DUB
1 stop11h 45mIberia
Deal found 11/21$533

Find flights from Ireland to Illinois within your budget

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 2,612,795 searches. Data last updated November 21, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

DublinChicago

DUB - ORD

DUBORD

Dublin

Mon 2/3

8:50 am-2:30 pm

1 stop11h 40m

Chicago O'Hare Intl

Mon 2/10

12:30 pm-8:05 am

2 stops13h 35m

$493

DublinChicago

DUB - ORD

DUBORD

Dublin

Mon 12/16

3:20 pm-5:55 pm

Nonstop8h 35m

Chicago O'Hare Intl

Mon 12/30

3:55 pm-5:15 am

Nonstop7h 20m

$494

DublinChicago

DUB - MDW

DUBMDW

Dublin

Thu 1/16

8:50 am-6:14 pm

2 stops15h 24m

Chicago Midway

Sat 1/25

5:05 pm-12:40 pm

2 stops13h 35m

$501

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 12/12

12:05 pm-3:50 pm

2 stops33h 45m

Chicago O'Hare Intl

Thu 1/9

7:10 pm-9:25 am

1 stop32h 15m

$502

DublinChicago

DUB - ORD

DUBORD

Dublin

Mon 12/23

8:40 am-2:45 pm

1 stop12h 05m

Chicago O'Hare Intl

Fri 1/10

9:45 pm-3:05 pm

1 stop11h 20m

$504

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 12/12

5:55 am-4:58 pm

2 stops17h 03m

Chicago O'Hare Intl

Fri 1/17

10:05 am-8:05 am

2 stops16h 00m

$507

DublinChicago

DUB - MDW

DUBMDW

Dublin

Thu 12/12

5:55 am-6:32 pm

2 stops18h 37m

Chicago Midway

Thu 1/9

9:34 am-8:45 am

2 stops17h 11m

$508

CorkChicago

ORK - ORD

ORKORD

Cork

Thu 12/5

1:25 pm-2:30 pm

1 stop31h 05m

Chicago O'Hare Intl

Mon 12/9

4:25 pm-9:50 pm

1 stop23h 25m

$516

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 12/4

9:00 am-2:51 pm

1 stop11h 51m

Chicago O'Hare Intl

Sat 12/14

1:19 pm-10:05 am

1 stop14h 46m

$527

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 12/5

8:40 am-2:45 pm

1 stop12h 05m

Chicago O'Hare Intl

Sun 12/15

5:15 pm-8:40 am

1 stop9h 25m

$530

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/21

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.

Travel insights for flights from Ireland to Illinois

Get recent, data-driven insights about flights from Ireland to Illinois including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Ireland to Illinois?

Currently, September is the cheapest month in which you can book a flight from Ireland to Illinois (average of $232). Flying from Ireland to Illinois in June is currently the most expensive (average of $308). 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 November 21, 2024.

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 November 21, 2024.

The most flights from IE0 to USIL are scheduled on a Tuesday (6 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (5 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 November 21, 2024.
To help decide which airline to fly from Ireland to Illinois, see what other customers have to say about KLM, Delta and Aer Lingus. 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
8,755 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta
8.0
Very good
8,755 reviews
Delta
8.0
Very good
8,755 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM
7.8
Good
1,349 reviews
Delta
8.0
Very good
8,755 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

SWISS
7.6
Good
1,636 reviews
Delta
8.0
Very good
8,755 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Air France
7.4
Good
1,525 reviews
Delta
8.0
Very good
8,755 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

United Airlines
7.4
Good
9,172 reviews
Delta
8.0
Very good
8,755 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 10

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 Icelandair. According to our data, you can fly for as low as $441. Users have also found prices from $446 and $447 on TAP AIR PORTUGAL and Scandinavian Airlines, 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, September is the cheapest month in which you can book a flight from Ireland to Illinois (average of $232). Flying from Ireland to Illinois in June is currently the most expensive (average of $308). 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 5 airlines flying from Ireland to Illinois

Discover the top 5 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 2,612,795 searches. Data last updated November 21, 2024.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$298Average$655FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$368Average$651FlexibilityNo cancel feeOn-time70%
IcelandairCheapest$373Average$517FlexibilityNo cancel feeOn-time76%
Aer LingusCheapest$399Average$540FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$549Average$750FlexibilityNo cancel feeOn-time69%
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