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$399+ Cheap flights from Louisville (SDF) 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 8/8. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — DUB
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
1 adult, Economy
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Cheapflights Tip: The best prices from Louisville Intl to Dublin are usually found in November or February, booked 27 days in advance, depart on a Monday or Tuesday and return on a Monday

Cheap flight deals from Louisville to Dublin

Discover tips and strategies to find the most affordable flight options for your journey from Louisville (SDF) to Dublin (DUB). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 31, 2025.

Round-trip from

$537
(United Airlines)

One-way from

$399
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$1,034
From Louisville Intl to Dublin
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One-way flight from Louisville Intl to Dublin
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Highest demand for flights based on searches. 22% potential increase in price ($241 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($42 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Louisville to Dublin

Cheapest flights from Louisville to Dublin
Explore the most affordable flight options available from Louisville to Dublin. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2025.

This United Airlines deal was found by Cheapflights users on 7/29. 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 8/1212:30 pmSDF - DUB
1 stop13h 40mUnited Airlines
Tue 8/1911:35 amDUB - SDF
1 stop12h 23mUnited Airlines
Deal found 7/29$537
This KLM deal was found by Cheapflights users on 7/30. 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 12/32:59 pmSDF - DUB
1 stop11h 46mKLM
Sun 12/79:45 amDUB - SDF
1 stop14h 16mKLM
Deal found 7/30$582
This Delta deal was found by Cheapflights users on 7/28. 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 12/312:40 pmSDF - DUB
1 stop14h 05mDelta
Sun 12/79:45 amDUB - SDF
1 stop14h 16mDelta
Deal found 7/28$583
This FlightHub deal was found by Cheapflights users on 7/31. 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 9/63:11 pmSDF - DUB
2 stops39h 39mScandinavian Airlines
Wed 9/1712:40 pmDUB - SDF
2 stops39h 06mScandinavian Airlines
Deal found 7/31$598
This Air Canada deal was found by Cheapflights users on 7/30. 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.
Tue 8/197:00 amSDF - DUB
2 stops20h 15mAir Canada
Tue 9/29:20 amDUB - SDF
2 stops32h 57mAir Canada
Deal found 7/30$613
This Iberia deal was found by Cheapflights users on 7/30. 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.
Mon 8/46:50 pmSDF - DUB
1 stop11h 50mIberia
Wed 8/201:45 pmDUB - SDF
1 stop14h 17mIberia
Deal found 7/30$622
This American Airlines deal was found by Cheapflights users on 7/31. 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 8/122:45 pmSDF - DUB
1 stop15h 55mAmerican Airlines
Tue 8/1912:40 pmDUB - SDF
1 stop15h 10mAmerican Airlines
Deal found 7/31$640
This Ovago deal was found by Cheapflights users on 7/31. 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 8/192:45 pmSDF - DUB
2 stops19h 00mBritish Airways
Tue 9/210:25 amDUB - SDF
2 stops17h 37mBritish Airways
Deal found 7/31$649
This KLM deal was found by Cheapflights users on 7/29. 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 8/204:25 pmSDF - DUB
1 stop13h 20mMultiple Airlines
Wed 8/2712:00 pmDUB - SDF
2 stops14h 14mMultiple Airlines
Deal found 7/29$696
This Cheapflightsfares deal was found by Cheapflights users on 7/30. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/202:20 pmSDF - DUB
2 stops21h 35mLufthansa
Wed 8/275:55 amDUB - SDF
2 stops21h 29mLufthansa
Deal found 7/30$704

Cheapflights Fare Finder

 
Customize your flight search to find flights from Louisville 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 31, 2025.
Use the filters below to find and compare flights from Louisville to Dublin that are best for you.

Fly from

Louisville

Fly to

Dublin

Route

Depart

Return

Price

LouisvilleDublin

SDF - DUB

SDFDUB

Louisville Intl

Tue 8/12

12:30 pm-7:10 am

1 stop13h 40m

Dublin

Tue 8/19

11:35 am-6:58 pm

1 stop12h 23m

$537

LouisvilleDublin

SDF - DUB

SDFDUB

Louisville Intl

Sat 9/6

3:11 pm-11:50 am

2 stops39h 39m

Dublin

Wed 9/17

12:40 pm-10:46 pm

2 stops39h 06m

$598

LouisvilleDublin

SDF - DUB

SDFDUB

Louisville Intl

Tue 8/19

7:00 am-8:15 am

2 stops20h 15m

Dublin

Tue 9/2

9:20 am-1:17 pm

2 stops32h 57m

$613

LouisvilleDublin

SDF - DUB

SDFDUB

Louisville Intl

Mon 8/4

6:50 pm-11:40 am

1 stop11h 50m

Dublin

Wed 8/20

1:45 pm-11:02 pm

1 stop14h 17m

$622

LouisvilleDublin

SDF - DUB

SDFDUB

Louisville Intl

Tue 8/12

2:45 pm-11:40 am

1 stop15h 55m

Dublin

Tue 8/19

12:40 pm-10:50 pm

1 stop15h 10m

$640

LouisvilleDublin

SDF - DUB

SDFDUB

Louisville Intl

Tue 8/19

2:45 pm-2:45 pm

2 stops19h 00m

Dublin

Tue 9/2

10:25 am-11:02 pm

2 stops17h 37m

$649

LouisvilleDublin

SDF - DUB

SDFDUB

Louisville Intl

Fri 8/15

6:00 am-7:55 am

1 stop20h 55m

Dublin

Mon 8/25

6:00 am-9:14 pm

2 stops20h 14m

$655

LouisvilleDublin

SDF - DUB

SDFDUB

Louisville Intl

Tue 8/19

12:40 pm-7:55 am

1 stop14h 15m

Dublin

Tue 9/2

10:00 am-6:16 pm

1 stop13h 16m

$691

LouisvilleDublin

SDF - DUB

SDFDUB

Louisville Intl

Wed 8/20

4:25 pm-10:45 am

1 stop13h 20m

Dublin

Wed 8/27

12:00 pm-9:14 pm

2 stops14h 14m

$696

LouisvilleDublin

SDF - DUB

SDFDUB

Louisville Intl

Wed 8/20

2:20 pm-4:55 pm

2 stops21h 35m

Dublin

Wed 8/27

5:55 am-10:24 pm

2 stops21h 29m

$704

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/31

Showing 1-10 of 14 results
1
2

Best time to book a flight from Louisville to Dublin

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

How far ahead should I book a flight from Louisville to Dublin?

Use this chart to determine the optimal time to book a round-trip flight from Louisville to Dublin. Price data was last updated on July 25, 2025.

Booking 27 days in advance of your planned departure date is, on average, the best time to get cheap flights from Louisville to Dublin. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, November is the cheapest month in which you can book a flight from Louisville to Dublin (average of $509). Flying from Louisville to Dublin in June is currently the most expensive (average of $924). 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 SDF to DUB?

Find hourly flight availability from Louisville 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 31, 2025.

It’s typically best to fly out from Louisville to Dublin at noon. Doing so could potentially save you 16% on the flight price compared to flying in the morning, which is usually more expensive.

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

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

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

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

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 31, 2025.
Read reviews from past customers who have flown Delta, KLM, and Finnair from Louisville to Dublin. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,981 reviews

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Entertainment

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
7,981 reviews
Delta
8.0
Very good
7,981 reviews

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Entertainment

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
1,383 reviews
Delta
8.0
Very good
7,981 reviews

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Entertainment

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!
Finnair
7.6
Good
1,316 reviews
Delta
8.0
Very good
7,981 reviews

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Entertainment

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!
United Airlines
7.4
Good
8,900 reviews
Delta
8.0
Very good
7,981 reviews

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Entertainment

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!
Scandinavian Airlines
7.4
Good
1,457 reviews
Delta
8.0
Very good
7,981 reviews

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Entertainment

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 Louisville to Dublin. 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 flying from Louisville to Dublin round-trip?

    Currently priced at $537, United Airlines will fly you from Louisville to Dublin and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Scandinavian Airlines and Air Canada - these airlines can fly you to your destination from $598 and $613, respectively. These flights start at 36% lower than the current average price 3 months from now.

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

    One-way options have recently been found by users for as low as $463 on American Airlines. Other airlines that offer cheap prices include Aer Lingus from $473 and Finnair from $539 one-way.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from Louisville to Dublin (average of $509). Flying from Louisville to Dublin in June is currently the most expensive (average of $924). 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

Browse thousands of different options on Cheapflights for your next trip

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Top 5 airlines flying from Louisville to Dublin

Discover the top 5 airlines that operate flights from Louisville 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 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$523Average$837FlexibilityNo cancel feeOn-time75%
DeltaCheapest$536Average$865FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$552Average$975FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$562Average$900FlexibilityNo cancel feeOn-time69%
Scandinavian AirlinesCheapest$662Average$679FlexibilityNo cancel feeOn-time77%

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