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$214+ 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 1/24. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — DUB
Jan 25 — Feb 11
Sun 1/25
Sun 2/1
1 adult, Economy
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Cheap 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 December 26, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2911:05 amSTL - DUB
1 stop15h 05mLufthansa
Wed 1/1410:40 amDUB - STL
1 stop13h 03mLufthansa
Deal found 12/23$431
This Kiwi.com deal was found by Cheapflights users on 12/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2912:44 pmSTL - DUB
1 stop12h 46mAustrian Airlines
Wed 1/149:30 amDUB - STL
1 stop20h 29mAustrian Airlines
Deal found 12/25$432
This United Airlines deal was found by Cheapflights users on 12/26. 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 12/298:15 amSTL - DUB
1 stop20h 05mUnited Airlines
Sat 1/179:00 amDUB - STL
2 stops33h 29mUnited Airlines
Deal found 12/26$456
This Air Canada deal was found by Cheapflights users on 12/24. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/319:55 amSTL - DUB
2 stops39h 15mAir Canada
Sat 1/179:00 amDUB - STL
2 stops37h 03mAir Canada
Deal found 12/24$462
This United Airlines deal was found by Cheapflights users on 12/25. 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 12/299:55 amSTL - DUB
2 stops15h 35mUnited Airlines
Wed 1/149:00 amDUB - STL
1 stop12h 29mUnited Airlines
Deal found 12/25$465
This United Airlines deal was found by Cheapflights users on 12/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/299:55 amSTL - DUB
1 stop16h 15mUnited Airlines
Sun 1/189:00 amDUB - STL
1 stop12h 29mUnited Airlines
Deal found 12/24$468
This United Airlines deal was found by Cheapflights users on 12/26. 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 12/308:15 amSTL - DUB
1 stop20h 05mUnited Airlines
Sun 1/189:00 amDUB - STL
1 stop12h 29mUnited Airlines
Deal found 12/26$469
This United Airlines deal was found by Cheapflights users on 12/26. 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 12/303:10 pmSTL - DUB
2 stops13h 10mUnited Airlines
Wed 1/149:00 amDUB - STL
1 stop12h 29mUnited Airlines
Deal found 12/26$473
This United Airlines deal was found by Cheapflights users on 12/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/279:15 pmORD - DUB
1 stop31h 05mUnited Airlines
Fri 1/99:00 amDUB - ORD
1 stop30h 13mUnited Airlines
Deal found 12/24$708
This Ovago deal was found by Cheapflights users on 12/25. 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.
Sat 12/279:51 pmORD - DUB
1 stop28h 54mAer Lingus
Fri 1/94:00 pmDUB - ORD
1 stop25h 55mAer Lingus
Deal found 12/25$710
This CrystalTravel deal was found by Cheapflights users on 12/24. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/276:35 pmORD - DUB
Nonstop7h 35mBrussels Airlines
Fri 1/910:40 amDUB - ORD
Nonstop8h 50mBrussels Airlines
Deal found 12/24$722
This CrystalTravel deal was found by Cheapflights users on 12/24. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/279:50 pmORD - DUB
1 stop13h 20mMultiple Airlines
Fri 1/910:40 amDUB - ORD
Nonstop8h 50mMultiple Airlines
Deal found 12/24$728

Find flight deals from Illinois to Dublin

Keep the following information in mind while searching for Illinois to Dublin flight deals. Data was last updated December 26, 2025.

Most accurate provider

Gotogate
3 stars

Most trusted provider

Gotogate
3 stars

Round-trip from

$420
(FlightHub)

One-way from

$214
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$825

Good round-trip deal

$592 or less

Good one-way deal

$425 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 Dublin
Search Deals
One-way flight from Illinois to Dublin
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($118 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Illinois to Dublin.
Search Deals
Price to beat on a one-way flight from Illinois to Dublin.
Search Deals

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 December 26, 2025.
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

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Sat 1/24

7:20 pm-11:45 am

2 stops34h 25m

Dublin

Sat 1/31

10:10 am-4:45 pm

1 stop12h 35m

$436

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Fri 2/6

6:30 pm-10:15 am

1 stop9h 45m

Dublin

Tue 2/10

11:30 am-5:20 pm

1 stop11h 50m

$455

PeoriaDublin

PIA - DUB

PIADUB

Greater Peoria

Sun 2/8

3:00 pm-8:10 am

1 stop11h 10m

Dublin

Sun 2/15

9:00 am-12:43 pm

2 stops33h 43m

$456

PeoriaDublin

PIA - DUB

PIADUB

Greater Peoria

Thu 2/26

6:35 am-8:10 am

1 stop19h 35m

Dublin

Wed 3/4

9:00 am-9:21 pm

2 stops42h 21m

$456

PeoriaDublin

PIA - DUB

PIADUB

Greater Peoria

Mon 3/2

1:25 pm-8:10 am

1 stop12h 45m

Dublin

Mon 3/9

8:00 am-2:04 pm

2 stops35h 04m

$456

PeoriaDublin

PIA - DUB

PIADUB

Greater Peoria

Fri 2/27

6:35 am-8:10 am

1 stop19h 35m

Dublin

Fri 3/6

9:00 am-12:43 pm

2 stops33h 43m

$456

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sat 2/21

5:41 pm-9:55 am

1 stop10h 14m

Dublin

Sat 2/28

9:00 am-12:21 pm

2 stops33h 21m

$456

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 1/21

6:40 pm-8:10 am

1 stop31h 30m

Dublin

Wed 1/28

9:00 am-9:22 am

2 stops54h 22m

$456

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Thu 1/22

9:57 am-8:10 am

1 stop16h 13m

Dublin

Mon 1/26

9:00 am-10:00 pm

2 stops43h 00m

$456

PeoriaDublin

PIA - DUB

PIADUB

Greater Peoria

Mon 3/2

6:53 pm-5:05 pm

2 stops16h 12m

Dublin

Mon 3/9

8:50 am-11:27 pm

2 stops19h 37m

$457

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/25

Showing 1-10 of 53 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 $369). Flying from Illinois to Dublin in June is currently the most expensive (average of $677). 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 December 26, 2025.

It’s typically best to fly out from Illinois to Dublin at noon. Doing so could potentially save you 27% on the flight price compared to flying in the morning, which is usually more expensive.

What is the cheapest day to fly from Illinois to Dublin?

Use this chart to determine the cheapest time to fly round-trip from Illinois to Dublin. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Illinois to Dublin flight should consider departing on Saturday mornings when fares are most often at their lowest. Saturday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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 December 26, 2025.

The most flights from USIL to DUB are scheduled on a Wednesday (14 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (10 on average).

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 9h 45m. Fly via Scandinavian Airlines, Icelandair, or United Airlines 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 British Airways ($364).

  • 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 (73%), British Airways (72%), American Airlines (65%).

  • What are the cheapest flights from Illinois to Dublin?

    Looking for the cheapest flight from Illinois to Dublin? While on average our users pay $3,491, our data indicates the cheapest price to be $338. The most popular route (Chicago O'Hare Intl - Dublin), is priced around $407.

  • 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 $369). Flying from Illinois to Dublin in June is currently the most expensive (average of $677). 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

See prices for flight routes from nearby airports that may be better suited for you.
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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 December 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$51Average$557FlexibilityNo cancel feeOn-time62%
IcelandairCheapest$346Average$542FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$393Average$500FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$400Average$472FlexibilityNo cancel feeOn-time77%
Aer LingusCheapest$470Average$711FlexibilityNo cancel feeOn-timeN/A
SWISSCheapest$473Average$818FlexibilityNo cancel feeOn-time79%
United AirlinesCheapest$487Average$877FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$488Average$741FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$498Average$669FlexibilityNo cancel feeOn-time70%
FinnairCheapest$499Average$835FlexibilityNo cancel feeOn-time76%

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