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$229+ 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 2/2. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — DUB
Dec 4 — Dec 111
Thu 12/4
Thu 12/11
1 adult, Economy
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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 November 4, 2025.

This KLM deal was found by Cheapflights users on 11/2. 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.
Sun 11/94:30 pmSTL - DUB
1 stop10h 15mKLM
Tue 11/259:45 amDUB - STL
1 stop13h 04mKLM
Deal found 11/2$423
This Delta deal was found by Cheapflights users on 11/4. 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.
Sun 11/91:35 pmSTL - DUB
2 stops13h 45mDelta
Tue 11/259:45 amDUB - STL
1 stop13h 04mDelta
Deal found 11/4$424
This KLM deal was found by Cheapflights users on 11/4. 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 12/29:00 amSTL - DUB
1 stop16h 45mKLM
Tue 12/99:45 amDUB - STL
1 stop13h 04mKLM
Deal found 11/4$433
This Delta deal was found by Cheapflights users on 11/4. 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.
Tue 12/26:39 amSTL - DUB
2 stops19h 06mDelta
Tue 12/910:45 amDUB - STL
2 stops16h 02mDelta
Deal found 11/4$438
This KLM deal was found by Cheapflights users on 11/2. 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 11/134:30 pmSTL - DUB
1 stop10h 15mMultiple Airlines
Thu 11/2010:45 amDUB - STL
1 stop11h 48mMultiple Airlines
Deal found 11/2$448
This Delta deal was found by Cheapflights users on 11/1. 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.
Wed 11/1211:39 amSTL - DUB
1 stop14h 06mDelta
Wed 1/216:00 amDUB - STL
2 stops23h 39mDelta
Deal found 11/1$452
This KLM deal was found by Cheapflights users on 11/2. 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.
Wed 12/34:32 pmSTL - DUB
2 stops14h 08mKLM
Wed 12/1011:30 amDUB - STL
2 stops16h 27mKLM
Deal found 11/2$454
This United Airlines deal was found by Cheapflights users on 11/2. 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 12/510:45 amPIA - DUB
1 stop15h 25mUnited Airlines
Wed 12/109:00 amDUB - PIA
2 stops32h 59mUnited Airlines
Deal found 11/2$455
This United Airlines deal was found by Cheapflights users on 11/2. 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 12/15:24 pmSTL - DUB
1 stop32h 46mUnited Airlines
Mon 12/89:00 amDUB - STL
2 stops37h 28mUnited Airlines
Deal found 11/2$455
This Delta deal was found by Cheapflights users on 11/3. 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.
Mon 12/17:05 amSTL - DUB
1 stop18h 40mDelta
Mon 12/89:45 amDUB - STL
1 stop14h 11mDelta
Deal found 11/3$458
This FlightHub deal was found by Cheapflights users on 11/4. 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.
Sat 11/297:20 pmORD - DUB
1 stop34h 25mScandinavian Airlines
Sat 12/610:10 amDUB - ORD
1 stop12h 35mScandinavian Airlines
Deal found 11/4$461
This United deal was found by Cheapflights users on 11/4. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/96:35 pmORD - DUB
Nonstop7h 35mMultiple Airlines
Tue 11/185:00 amDUB - ORD
1 stop14h 10mMultiple Airlines
Deal found 11/4$462

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 November 4, 2025.

Most accurate provider

Gotogate
3 stars

Most trusted provider

Gotogate
3 stars

Round-trip from

$433
(KLM)

One-way from

$229
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$616

Good round-trip deal

$593 or less

Good one-way deal

$452 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. 15% potential increase in price ($124 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 November 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 November 4, 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

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sun 11/9

4:30 pm-8:45 am

1 stop10h 15m

Dublin

Tue 11/25

10:45 am-4:33 pm

1 stop11h 48m

$424

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 12/2

9:00 am-7:45 am

1 stop16h 45m

Dublin

Tue 12/9

9:45 am-4:49 pm

1 stop13h 04m

$433

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 12/2

6:39 am-7:45 am

2 stops19h 06m

Dublin

Tue 12/9

9:45 am-11:29 pm

1 stop19h 44m

$438

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Mon 2/2

7:10 am-8:45 am

2 stops19h 35m

Dublin

Tue 2/10

10:45 am-11:39 pm

2 stops18h 54m

$438

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Thu 11/13

12:49 pm-9:20 am

2 stops14h 31m

Dublin

Thu 11/20

9:45 am-4:49 pm

1 stop13h 04m

$448

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 12/2

9:00 am-7:45 am

1 stop16h 45m

Dublin

Thu 12/11

6:00 am-5:10 pm

2 stops17h 10m

$452

PeoriaDublin

PIA - DUB

PIADUB

Greater Peoria

Fri 12/5

10:45 am-8:10 am

1 stop15h 25m

Dublin

Wed 12/10

9:00 am-11:59 am

2 stops32h 59m

$455

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Mon 12/1

5:24 pm-8:10 am

1 stop32h 46m

Dublin

Mon 12/8

9:00 am-4:28 pm

2 stops37h 28m

$455

EvansvilleDublin

EVV - DUB

EVVDUB

Evansville Dress Regional

Fri 11/14

6:00 am-7:45 am

1 stop19h 45m

Dublin

Tue 11/18

10:45 am-10:08 pm

2 stops17h 23m

$463

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Wed 12/10

1:23 pm-12:40 pm

2 stops17h 17m

Dublin

Tue 12/16

10:45 am-5:46 pm

1 stop13h 01m

$465

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/3

Showing 1-10 of 57 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 $379). Flying from Illinois to Dublin in June is currently the most expensive (average of $678). 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 November 4, 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 November 3, 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. Thursday 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 November 4, 2025.

The most flights from USIL to DUB are scheduled on a Monday (17 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (10 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 15m. Fly via Delta, KLM, or United Airlines to get the fastest option. There are 3909 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 Scandinavian Airlines ($278), Lufthansa ($371), and United Airlines ($399).

  • 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: Alaska Airlines (79%), Finnair (79%), British Airways (77%).

  • What are the cheapest flights from Illinois to Dublin?

    Looking for the cheapest flight from Illinois to Dublin? While on average our users pay $3,315, our data indicates the cheapest price to be $377. The most popular route (Chicago O'Hare Intl - Dublin), is priced around $348.

  • 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 $379). Flying from Illinois to Dublin in June is currently the most expensive (average of $678). 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
Swords
Wicklow
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 November 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$51Average$557FlexibilityNo cancel feeOn-time62%
IcelandairCheapest$346Average$556FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$393Average$502FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$400Average$479FlexibilityNo cancel feeOn-time77%
SWISSCheapest$473Average$818FlexibilityNo cancel feeOn-time79%
LufthansaCheapest$476Average$744FlexibilityNo cancel feeOn-time76%
Aer LingusCheapest$494Average$721FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$512Average$687FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$522Average$879FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$523Average$674FlexibilityNo cancel feeOn-time67%

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