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$205+ Cheap flights from Illinois to Dublin (DUB)

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 5/10. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — DUB
Feb 7 — Feb 141
Sat 2/7
Sat 2/14
1 adult, Economy
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Cheap flight deals from Illinois to Dublin

Keep the following information in mind while searching for Illinois to Dublin flight deals. Data was last updated January 8, 2026.

Most accurate provider

Gotogate
3 stars

Most trusted provider

Gotogate
3 stars

Round-trip from

$370
(Ticket)

One-way from

$205
(oojo)

Popular in

June

Cheapest in

February

Average price

$564

Good round-trip deal

$587 or less

Good one-way deal

$420 or less
Provider with most accurate pricing for Chicago (CHI)-Dublin flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Dublin flights.
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From Illinois to Dublin
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One-way flight from Illinois to Dublin
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Highest demand for flights based on searches. 14% potential increase in price ($118 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($18 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Price to beat on a round-trip flight from Illinois to Dublin.
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Price to beat on a one-way flight from Illinois to Dublin.
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Find flight deals from Illinois to Dublin

Cheapest flights from Illinois to Dublin
Explore the most affordable flight options available from Illinois to Dublin. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 8, 2026.

This Ticket deal was found by Cheapflights users on 1/8. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/196:40 pmSTL - DUB
2 stops30h 30mAir Canada
Wed 2/49:00 amDUB - STL
1 stop12h 15mAir Canada
Deal found 1/8$370
This KAYAK deal was found by Cheapflights users on 1/6. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2210:00 pmSTL - DUB
1 stop15h 35mBritish Airways
Thu 4/305:30 pmDUB - STL
1 stop32h 00mBritish Airways
Deal found 1/6$401
This KAYAK deal was found by Cheapflights users on 1/8. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/141:29 pmSTL - DUB
2 stops14h 46mBritish Airways
Wed 4/228:40 amDUB - STL
1 stop16h 50mBritish Airways
Deal found 1/8$406
This Ticket deal was found by Cheapflights users on 1/8. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/191:35 pmSTL - DUB
2 stops15h 40mBritish Airways
Wed 2/410:00 amDUB - STL
2 stops16h 13mBritish Airways
Deal found 1/8$408
This KAYAK deal was found by Cheapflights users on 1/6. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/12:00 pmSTL - DUB
2 stops15h 15mBritish Airways
Tue 3/1010:55 amDUB - STL
2 stops15h 16mBritish Airways
Deal found 1/6$411
This KAYAK deal was found by Cheapflights users on 1/6. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/21:35 pmSTL - DUB
2 stops15h 40mBritish Airways
Mon 2/96:30 pmDUB - STL
2 stops30h 04mBritish Airways
Deal found 1/6$412
This Gurufare deal was found by Cheapflights users on 1/7. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/95:16 pmPIA - DUB
2 stops16h 04mBritish Airways
Mon 2/167:45 pmDUB - PIA
2 stops28h 40mBritish Airways
Deal found 1/7$413
This Ovago deal was found by Cheapflights users on 1/6. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/311:05 amSTL - DUB
2 stops16h 30mBritish Airways
Tue 2/108:45 amDUB - STL
2 stops17h 28mBritish Airways
Deal found 1/6$413
This KAYAK deal was found by Cheapflights users on 1/7. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/119:35 pmSTL - DUB
1 stop14h 40mBritish Airways
Wed 8/198:40 amDUB - STL
2 stops16h 43mBritish Airways
Deal found 1/7$414
This United Airlines deal was found by Cheapflights users on 1/8. 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 1/191:15 pmSTL - DUB
1 stop12h 55mUnited Airlines
Wed 2/49:00 amDUB - STL
1 stop12h 15mUnited Airlines
Deal found 1/8$415
This KAYAK deal was found by Cheapflights users on 1/6. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/81:29 pmSTL - DUB
2 stops14h 46mBritish Airways
Thu 4/169:45 amDUB - STL
2 stops19h 19mBritish Airways
Deal found 1/6$416
This oojo deal was found by Cheapflights users on 1/8. 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 2/1111:38 amORD - DUB
2 stops16h 37mBritish Airways
Thu 2/2612:05 pmDUB - ORD
2 stops30h 20mBritish Airways
Deal found 1/8$423

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Dublin 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 January 8, 2026.
Use the filters below to find and compare flights from Illinois to Dublin that are best for you.

Fly from

Illinois

Fly to

Dublin

Route

Depart

Return

Price

PeoriaDublin

PIA - DUB

PIADUB

Greater Peoria

Mon 2/9

5:16 pm-3:20 pm

2 stops16h 04m

Dublin

Mon 2/16

7:45 pm-6:25 pm

2 stops28h 40m

$413

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Tue 3/24

10:45 pm-3:40 pm

1 stop11h 55m

Dublin

Tue 3/31

6:30 am-12:25 pm

1 stop11h 55m

$424

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Tue 3/24

10:45 pm-7:05 pm

1 stop15h 20m

Dublin

Mon 3/30

8:30 pm-1:50 pm

1 stop23h 20m

$424

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Mon 3/23

6:10 pm-1:35 pm

1 stop14h 25m

Dublin

Mon 3/30

8:30 pm-1:50 pm

1 stop23h 20m

$424

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 4/21

9:35 pm-5:00 pm

1 stop13h 25m

Dublin

Thu 4/30

8:20 pm-7:30 pm

1 stop29h 10m

$424

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sun 4/19

9:40 pm-4:20 pm

1 stop12h 40m

Dublin

Wed 4/29

10:30 am-7:30 pm

1 stop15h 00m

$424

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 4/22

9:35 pm-2:40 pm

1 stop11h 05m

Dublin

Fri 5/1

7:30 am-7:30 pm

1 stop18h 00m

$424

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Wed 4/1

4:15 pm-8:15 am

1 stop10h 00m

Dublin

Tue 4/7

9:50 am-7:58 am

2 stops28h 08m

$429

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Wed 3/4

7:20 pm-6:10 pm

2 stops40h 50m

Dublin

Sun 3/8

7:05 pm-5:45 pm

1 stop27h 40m

$431

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Wed 3/18

2:15 pm-9:20 am

1 stop14h 05m

Dublin

Wed 3/25

11:30 am-6:31 pm

1 stop12h 01m

$435

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/6

Showing 1-10 of 60 results
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Best time to book a flight from Illinois to Dublin

Have a flexible travel schedule? Discover the best time to fly to Dublin 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.

Cheapflights Insights

Everything you need to know about your flight from Illinois to Dublin

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

Currently, January is the cheapest month in which you can book a flight from Illinois to Dublin (average of $351). Flying from Illinois to Dublin in June is currently the most expensive (average of $673). 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 DUB?

Find hourly flight availability from Illinois to Dublin. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 8, 2026.

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

Weekly flight availability from Illinois to Dublin

Explore weekly flight availability from Illinois to Dublin. 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 January 8, 2026.

The most flights from USIL to DUB are scheduled on a Monday (10 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (9 on average).

How much does it cost to fly round-trip from Illinois to Dublin?

Related info for your journey

Find useful and relevant information for your journey from Illinois to Dublin. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Dublin from Illinois?

    Dublin (DUB), located 5.7 mi from the city center, is the airport you fly into when you book flights from Illinois to Dublin.

  • How long is the flight from Illinois to Dublin?

    There are many flights that can get you from Illinois to Dublin in 10h. Fly via British Airways, United Airlines, or Delta to get the fastest option. There are 3661 mi between Illinois and Dublin. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Illinois to Dublin one-way?

    The cheapest airlines for a one-way flight from Illinois to Dublin are TAP AIR PORTUGAL ($215), Icelandair ($275), and JetBlue ($288).

  • What are the most popular routes from Illinois to Dublin?

    Most travelers choose Chicago O'Hare Intl - Dublin, Chicago Midway - Dublin or Lambert-St Louis - Dublin when deciding on the best route from Illinois to Dublin.

  • What are the most reliable airlines from Illinois to Dublin?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Illinois to Dublin on time: Aer Lingus (77%), British Airways (72%), American Airlines (70%).

  • What are the cheapest flights from Illinois to Dublin?

    Looking for the cheapest flight from Illinois to Dublin? While on average our users pay $3,496, our data indicates the cheapest price to be $331. The most popular route (Chicago O'Hare Intl - Dublin), is priced around $375.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Illinois to Dublin (average of $351). Flying from Illinois to Dublin in June is currently the most expensive (average of $673). 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

Traveling to a place near Dublin?

Book flights to Dublin if you plan to visit one of these locations
Maynooth
Castleknock
Leixlip

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Alternative routes for Illinois to Dublin

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Top 10 airlines flying from Illinois to Dublin

Discover the top 10 airlines that operate flights from Illinois to Dublin. 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 January 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$51Average$568FlexibilityNo cancel feeOn-time62%
IcelandairCheapest$345Average$539FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$393Average$501FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$400Average$470FlexibilityNo cancel feeOn-time77%
Aer LingusCheapest$470Average$708FlexibilityNo cancel feeOn-timeN/A
SWISSCheapest$473Average$818FlexibilityNo cancel feeOn-time79%
United AirlinesCheapest$487Average$843FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$488Average$703FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$498Average$669FlexibilityNo cancel feeOn-time70%
FinnairCheapest$499Average$831FlexibilityNo cancel feeOn-time76%

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