HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ireland

$265+ Cheap flights from Illinois to Ireland

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 4/6. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — DUB
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Illinois to Ireland with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Illinois to Ireland

Keep the following information in mind while searching for Illinois to Ireland flight deals. Data was last updated February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$472
(Booking.com)

One-way from

$265
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$556

Good round-trip deal

$657 or less

Good one-way deal

$488 or less
Provider with most accurate pricing for Chicago (CHI)-Dublin flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Dublin flights.
Search Deals
From Illinois to Ireland
Search Deals
One-way flight from Illinois to Ireland
Search Deals
Highest demand for flights based on searches. 23% potential increase in price ($219 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($33 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2025
Search Deals
Price to beat on a round-trip flight from Illinois to Ireland.
Search Deals
Price to beat on a one-way flight from Illinois to Ireland.
Search Deals

Find flight deals from Illinois to Ireland

Cheapest flights from Illinois to Ireland
Explore the most affordable flight options available from Illinois to Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

This oojo deal was found by Cheapflights users on 2/18. 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.
Wed 2/197:15 pmORD - DUB
1 stop22h 05mTAP AIR PORTUGAL
Thu 2/274:25 amDUB - ORD
1 stop17h 05mTAP AIR PORTUGAL
Deal found 2/18$472
This Expedia deal was found by Cheapflights users on 2/20. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/147:15 pmORD - DUB
1 stop34h 35mScandinavian Airlines
Mon 4/2812:40 pmDUB - ORD
1 stop33h 30mScandinavian Airlines
Deal found 2/20$473
This Orbitz deal was found by Cheapflights users on 2/19. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/116:00 pmORD - DUB
1 stop20h 35mBritish Airways
Wed 3/1910:25 amDUB - ORD
1 stop14h 20mBritish Airways
Deal found 2/19$519
This Gotogate deal was found by Cheapflights users on 2/19. 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 3/248:30 pmORD - DUB
1 stop28h 40mAir Canada
Wed 4/29:50 amDUB - ORD
1 stop15h 40mAir Canada
Deal found 2/19$529
This oojo deal was found by Cheapflights users on 2/19. 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.
Tue 10/289:20 pmORD - DUB
1 stop31h 35mTurkish Airlines
Tue 11/44:50 pmDUB - ORD
1 stop23h 20mTurkish Airlines
Deal found 2/19$535
This Gotogate deal was found by Cheapflights users on 2/20. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/248:40 pmORD - DUB
Nonstop7h 20mAer Lingus
Wed 4/211:35 amDUB - ORD
Nonstop8h 25mAer Lingus
Deal found 2/20$538
This oojo deal was found by Cheapflights users on 2/20. 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.
Wed 4/27:30 pmORD - DUB
1 stop9h 35mIcelandair
Wed 4/912:15 pmDUB - ORD
1 stop12h 05mIcelandair
Deal found 2/20$540
This SmartFares deal was found by Cheapflights users on 2/20. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/248:30 pmORD - DUB
1 stop28h 40mMultiple Airlines
Wed 4/210:40 amDUB - ORD
1 stop13h 35mMultiple Airlines
Deal found 2/20$544
This United Airlines deal was found by Cheapflights users on 2/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/246:18 pmORD - DUB
1 stop10h 47mUnited Airlines
Wed 4/29:50 amDUB - ORD
1 stop11h 05mUnited Airlines
Deal found 2/20$555
This JetBlue deal was found by Cheapflights users on 2/19. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/169:50 amORD - DUB
1 stop17h 10mJetBlue
Thu 10/2311:30 amDUB - ORD
1 stop12h 00mJetBlue
Deal found 2/19$560
This KLM deal was found by Cheapflights users on 2/20. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/242:40 pmORD - DUB
1 stop12h 45mKLM
Wed 4/212:00 pmDUB - ORD
1 stop16h 15mKLM
Deal found 2/20$565
This American Airlines deal was found by Cheapflights users on 2/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/247:30 pmORD - SNN
1 stop18h 55mAmerican Airlines
Mon 3/319:15 pmSNN - ORD
1 stop23h 30mAmerican Airlines
Deal found 2/20$568

Find flights from Illinois to Ireland within your budget

Customize your flight search to find flights from Illinois to Ireland 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 20, 2025.

Fly from

Illinois

Fly to

Ireland

Route

Depart

Return

Price

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Sun 4/6

7:15 pm-6:15 pm

1 stop17h 00m

Dublin

Sun 4/13

5:00 pm-4:10 pm

1 stop29h 10m

$472

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Sun 3/2

8:25 pm-4:10 pm

1 stop13h 45m

Dublin

Tue 3/18

4:55 pm-4:30 pm

1 stop28h 35m

$478

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Mon 3/24

7:30 pm-11:15 am

1 stop10h 45m

Dublin

Wed 4/2

9:30 am-3:09 pm

1 stop11h 39m

$511

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Tue 3/11

6:00 pm-7:35 pm

1 stop20h 35m

Dublin

Wed 3/19

10:25 am-7:45 pm

1 stop14h 20m

$519

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Mon 3/24

8:30 pm-6:10 am

1 stop28h 40m

Dublin

Wed 4/2

9:50 am-7:30 pm

1 stop15h 40m

$529

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Thu 2/27

8:30 pm-9:55 am

1 stop31h 25m

Dublin

Tue 3/4

10:55 am-10:10 am

1 stop29h 15m

$535

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Mon 3/24

8:40 pm-9:00 am

Nonstop7h 20m

Dublin

Wed 4/2

11:35 am-2:00 pm

Nonstop8h 25m

$538

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Wed 4/2

7:30 pm-11:05 am

1 stop9h 35m

Dublin

Wed 4/9

12:15 pm-6:20 pm

1 stop12h 05m

$540

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Mon 3/24

8:30 pm-6:10 am

1 stop28h 40m

Dublin

Wed 4/2

10:40 am-6:15 pm

1 stop13h 35m

$544

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Mon 3/31

4:27 pm-5:15 pm

2 stops18h 48m

Dublin

Mon 4/7

9:45 am-5:50 pm

1 stop14h 05m

$546

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/18

Showing 1-10 of 60 results
1
2
3
...
6

Best time to book a flight from Illinois to Ireland

Have a flexible travel schedule? Discover the best time to fly to Ireland from Illinois 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 Illinois to Ireland

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

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

Currently, November is the cheapest month in which you can book a flight from Illinois to Ireland (average of $509). Flying from Illinois to Ireland in June is currently the most expensive (average of $1,016). 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 IL to IE?

Find hourly flight availability from Illinois to Ireland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 20, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Ireland as you normally would.

Rainfall in Ireland by month

Plan your trip to Ireland by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ireland ranges from 1.9 - 3.1 inches per month. October is typically the wettest month, when rainfall can reach 3.1 in. February is typically the driest time to visit Ireland when rainfall is around 1.9 in.

Temperature in Ireland by month

Plan your trip to Ireland by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ireland, 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 60.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 41.0 F).

Reviews of airlines servicing Ireland

Get insights into the airlines that provide service to Ireland. 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 Ireland. Reviews last updated February 20, 2025.
Read through reviews of airlines operating flights from Illinois to Ireland, such as Delta, KLM and SWISS. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,220 reviews

Crew

8.5

Boarding

8.2

Comfort

8.0

Food

7.3

Overall

8.0

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta
8.0
Very good
8,220 reviews
Delta
8.0
Very good
8,220 reviews

Crew

8.5

Boarding

8.2

Comfort

8.0

Food

7.3

Overall

8.0

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM
7.8
Good
1,333 reviews
Delta
8.0
Very good
8,220 reviews

Crew

8.5

Boarding

8.2

Comfort

8.0

Food

7.3

Overall

8.0

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

SWISS
7.5
Good
1,568 reviews
Delta
8.0
Very good
8,220 reviews

Crew

8.5

Boarding

8.2

Comfort

8.0

Food

7.3

Overall

8.0

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Air France
7.4
Good
1,449 reviews
Delta
8.0
Very good
8,220 reviews

Crew

8.5

Boarding

8.2

Comfort

8.0

Food

7.3

Overall

8.0

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

United Airlines
7.4
Good
8,766 reviews
Delta
8.0
Very good
8,220 reviews

Crew

8.5

Boarding

8.2

Comfort

8.0

Food

7.3

Overall

8.0

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Illinois to Ireland. 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 Illinois to Ireland one-way?

    $294 is the cheapest one-way deal found within the past few days, from Icelandair. You may also be able to find cheap deals on TAP AIR PORTUGAL and WestJet, with prices starting from $338 and $358, respectively.

  • Can I find deals for flights from Illinois to Ireland that include hotel bookings?

    Yes. In addition to deals on Illinois to Ireland flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Ireland?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Ireland.

  • Can I find deals for business class flights from Illinois to Ireland?

    Yes. Cheapflights offers flight deals from Illinois to Ireland 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 Illinois to Ireland?

    Currently, November is the cheapest month in which you can book a flight from Illinois to Ireland (average of $509). Flying from Illinois to Ireland in June is currently the most expensive (average of $1,016). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Illinois to Ireland

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Heathrow flights
Newark to Heathrow flights
John F Kennedy Intl to Charles de Gaulle flights
Newark to Charles de Gaulle flights
John F Kennedy Intl to Leonardo da Vinci/Fiumicino flights
John F Kennedy Intl to Gatwick flights
Newark to Leonardo da Vinci/Fiumicino flights
LaGuardia to Heathrow flights
John F Kennedy Intl to London City flights
Los Angeles to Heathrow flights
Newark to Athens flights
John F Kennedy Intl to Istanbul flights
John F Kennedy Intl to Orly flights
Newark to Orly flights
Newark to Gatwick flights
John F Kennedy Intl to Lisbon flights
John F Kennedy Intl to Athens flights
Dulles Intl to Heathrow flights
Boston to Heathrow flights
LaGuardia to Charles de Gaulle flights
John F Kennedy Intl to Barcelona-El Prat flights
Newark to Barcelona-El Prat flights
Miami to Madrid flights
Newark to Lisbon flights
John F Kennedy Intl to Dublin flights
San Francisco to Heathrow flights
O'Hare Intl to Heathrow flights
Newark to Madrid flights
John F Kennedy Intl to Madrid flights
Stewart to Charles de Gaulle flights
Baltimore to Heathrow flights
Newark to Dublin flights
John F Kennedy Intl to Malpensa flights
Dulles Intl to Charles de Gaulle flights
Newark to London City flights
Seattle to Heathrow flights
O'Hare Intl to Leonardo da Vinci/Fiumicino flights
O'Hare Intl to Charles de Gaulle flights
Boston to Charles de Gaulle flights
Stewart to Stansted flights
Newark to Malpensa flights
LaGuardia to Leonardo da Vinci/Fiumicino flights
Dallas/Fort Worth to Heathrow flights
Los Angeles to Charles de Gaulle flights
Dallas/Fort Worth to Charles de Gaulle flights
Boston to Dublin flights
John F Kennedy Intl to Amsterdam flights
San Francisco to Charles de Gaulle flights
O'Hare Intl to Athens flights
Boston to Leonardo da Vinci/Fiumicino flights

Top 10 airlines flying from Illinois to Ireland

Discover the top 10 airlines that operate flights from Illinois to Ireland. 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 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air FranceCheapest$196Average$200FlexibilityNo cancel feeOn-time77%
Scandinavian AirlinesCheapest$341Average$485FlexibilityNo cancel feeOn-time77%
IcelandairCheapest$357Average$586FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$394Average$466FlexibilityNo cancel feeOn-timeN/A
Aer LingusCheapest$448Average$695FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$482Average$731FlexibilityNo cancel feeOn-time75%
British AirwaysCheapest$498Average$982FlexibilityNo cancel feeOn-time70%
IberiaCheapest$507Average$747FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$509Average$968FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$513Average$900FlexibilityNo cancel feeOn-time69%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.