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$291+ 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 7/14. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — DUB
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
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 July 3, 2025.

Round-trip from

$499
(Iberia)

One-way from

$291
(Expedia)

Popular in

June

Cheapest in

February

Average price

$810

Good round-trip deal

$639 or less

Good one-way deal

$511 or less
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. 17% potential increase in price ($143 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($19 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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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 July 3, 2025.

This Delta deal was found by Cheapflights users on 7/3. 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.
Tue 11/2512:10 pmSTL - DUB
1 stop13h 35mDelta
Tue 12/29:45 amDUB - STL
1 stop13h 02mDelta
Deal found 7/3$479
This United Airlines deal was found by Cheapflights users on 7/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/611:45 amSTL - DUB
1 stop14h 25mUnited Airlines
Wed 11/129:00 amDUB - STL
1 stop12h 29mUnited Airlines
Deal found 7/3$498
This Iberia deal was found by Cheapflights users on 7/2. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/201:15 pmSTL - DUB
1 stop11h 15mIberia
Tue 8/266:20 pmDUB - STL
2 stops30h 03mIberia
Deal found 7/2$499
This Ovago deal was found by Cheapflights users on 7/2. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/285:27 pmSTL - DUB
2 stops18h 53mBritish Airways
Wed 8/65:55 pmDUB - STL
2 stops32h 52mBritish Airways
Deal found 7/2$510
This Mytrip deal was found by Cheapflights users on 7/3. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/164:05 pmSTL - DUB
1 stop10h 10mMultiple Airlines
Thu 10/235:55 amDUB - STL
2 stops15h 23mMultiple Airlines
Deal found 7/3$512
This Air Canada deal was found by Cheapflights users on 7/2. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/44:05 pmSTL - DUB
2 stops33h 40mAir Canada
Tue 9/169:20 amDUB - STL
1 stop16h 37mAir Canada
Deal found 7/2$513
This American Airlines deal was found by Cheapflights users on 7/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/167:32 amSTL - DUB
1 stop15h 58mAmerican Airlines
Sat 8/239:30 amDUB - STL
1 stop17h 17mAmerican Airlines
Deal found 7/1$517
This KLM deal was found by Cheapflights users on 7/3. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/2810:46 amSTL - DUB
1 stop15h 59mKLM
Wed 8/61:20 pmDUB - STL
2 stops16h 33mKLM
Deal found 7/3$521
This Lufthansa deal was found by Cheapflights users on 7/3. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/256:43 pmSTL - DUB
2 stops15h 42mLufthansa
Tue 12/25:10 pmDUB - STL
1 stop26h 45mLufthansa
Deal found 7/3$529
This American Airlines deal was found by Cheapflights users on 7/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/75:21 pmEVV - DUB
2 stops15h 24mAmerican Airlines
Tue 10/1412:40 pmDUB - EVV
1 stop14h 08mAmerican Airlines
Deal found 7/3$541
This oojo deal was found by Cheapflights users on 7/3. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/316:00 pmORD - DUB
1 stop18h 05mTAP AIR PORTUGAL
Sat 9/65:30 amDUB - ORD
1 stop17h 00mTAP AIR PORTUGAL
Deal found 7/3$547
This Delta deal was found by Cheapflights users on 7/3. 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.
Fri 9/192:05 pmORD - DUB
1 stop14h 40mDelta
Fri 10/312:00 pmDUB - ORD
1 stop15h 23mDelta
Deal found 7/3$548

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 July 3, 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

Wed 8/20

1:15 pm-6:30 am

1 stop11h 15m

Dublin

Tue 8/26

6:20 pm-6:23 pm

2 stops30h 03m

$499

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Mon 9/8

4:20 pm-9:15 am

1 stop10h 55m

Dublin

Fri 9/19

6:00 am-4:37 pm

2 stops16h 37m

$501

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 8/19

4:00 pm-7:45 am

2 stops33h 45m

Dublin

Mon 8/25

9:20 am-3:21 pm

2 stops36h 01m

$505

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Mon 7/28

5:27 pm-6:20 pm

2 stops18h 53m

Dublin

Wed 8/6

5:55 pm-8:47 pm

2 stops32h 52m

$510

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sat 8/16

7:32 am-5:30 am

1 stop15h 58m

Dublin

Sat 8/23

9:30 am-8:47 pm

1 stop17h 17m

$517

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sat 8/16

9:15 am-8:15 am

1 stop17h 00m

Dublin

Sat 8/23

11:35 am-3:44 pm

1 stop10h 09m

$519

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Mon 7/28

10:46 am-8:45 am

1 stop15h 59m

Dublin

Wed 8/6

1:20 pm-11:53 pm

2 stops16h 33m

$521

EvansvilleDublin

EVV - DUB

EVVDUB

Evansville Dress Regional

Tue 10/7

5:21 pm-2:45 pm

2 stops15h 24m

Dublin

Tue 10/14

12:40 pm-8:48 pm

1 stop14h 08m

$541

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Sun 8/31

6:00 pm-6:05 pm

1 stop18h 05m

Dublin

Sat 9/6

5:30 am-4:30 pm

1 stop17h 00m

$547

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Fri 9/19

10:15 am-10:45 am

1 stop18h 30m

Dublin

Thu 10/2

11:00 am-11:52 pm

1 stop18h 52m

$548

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

Showing 1-10 of 49 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, November is the cheapest month in which you can book a flight from Illinois to Dublin (average of $509). Flying from Illinois to Dublin in June is currently the most expensive (average of $929). 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 July 3, 2025.

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 July 3, 2025.

The most flights from USIL to DUB are scheduled on a Monday (17 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (17 on average).

Reviews of airlines servicing Dublin

Get insights into the airlines that provide service to Dublin. 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 Dublin. Reviews last updated July 3, 2025.
Read through reviews of airlines operating flights from Illinois to Dublin, such as Delta, Porter Airlines, and KLM. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,982 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.5

Food

7.3

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,982 reviews
Delta
8.0
Very good
7,982 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.5

Food

7.3

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Porter Airlines
8.0
Very good
298 reviews
Delta
8.0
Very good
7,982 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.5

Food

7.3

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,367 reviews
Delta
8.0
Very good
7,982 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.5

Food

7.3

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air France
7.5
Good
1,465 reviews
Delta
8.0
Very good
7,982 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.5

Food

7.3

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
SWISS
7.5
Good
1,654 reviews
Delta
8.0
Very good
7,982 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.5

Food

7.3

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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.

  • 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 ($291), Icelandair ($326), and WestJet ($336).

  • 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: Air France (88%), Air Canada (63%), Austrian Airlines (63%).

  • What are the cheapest flights from Illinois to Dublin?

    Looking for the cheapest flight from Illinois to Dublin? While on average our users pay $3,464, our data indicates the cheapest price to be $407. The most popular route (Chicago O'Hare Intl - Dublin), is priced around $354.

  • 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, November is the cheapest month in which you can book a flight from Illinois to Dublin (average of $509). Flying from Illinois to Dublin in June is currently the most expensive (average of $929). 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 Illinois?

Book flights to Illinois if you plan to visit one of these locations
Maynooth
Castleknock
Swords
Wicklow
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 July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$355Average$549FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$393Average$481FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$400Average$484FlexibilityNo cancel feeOn-time77%
Aer LingusCheapest$446Average$707FlexibilityNo cancel feeOn-timeN/A
SWISSCheapest$473Average$818FlexibilityNo cancel feeOn-time79%
KLMCheapest$482Average$731FlexibilityNo cancel feeOn-time75%
IberiaCheapest$511Average$732FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$513Average$901FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$519Average$660FlexibilityNo cancel feeOn-time70%
FinnairCheapest$526Average$821FlexibilityNo cancel feeOn-time76%

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