HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ireland

$455+ Cheap flights from Louisville (SDF) to Ireland

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/12. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — DUB
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Louisville to Ireland with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Louisville to Ireland

Keep the following information in mind while searching for Louisville to Ireland flight deals. Data was last updated October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$455
(United Airlines)

Popular in

June

Cheapest in

November

Average price

$856
Provider with most accurate pricing for Louisville Intl-Dublin flight deals.
Search Deals
Provider most trusted by Cheapflights users for Louisville Intl-Dublin flights.
Search Deals
From Louisville Intl to Ireland
Search Deals
Highest demand for flights based on searches. 24% potential increase in price ($272 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($44 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Find flight deals from Louisville to Ireland

Cheapest flights from Louisville to Ireland
Explore the most affordable flight options available from Louisville to Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2025.

This United Airlines deal was found by Cheapflights users on 10/29. 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.
Wed 11/129:55 amSDF - DUB
1 stop19h 25mUnited Airlines
Wed 11/199:00 amDUB - SDF
2 stops32h 26mUnited Airlines
Deal found 10/29$455
This Delta deal was found by Cheapflights users on 10/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/282:53 pmSDF - DUB
1 stop11h 52mDelta
Fri 12/59:45 amDUB - SDF
1 stop18h 13mDelta
Deal found 10/30$458
This United deal was found by Cheapflights users on 10/29. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/129:00 amSDF - DUB
2 stops17h 30mMultiple Airlines
Wed 11/199:00 amDUB - SDF
2 stops32h 26mMultiple Airlines
Deal found 10/29$460
This Booking.com deal was found by Cheapflights users on 10/30. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/279:00 amSDF - DUB
2 stops17h 10mMultiple Airlines
Thu 12/45:00 amDUB - SDF
2 stops22h 29mMultiple Airlines
Deal found 10/30$475
This United deal was found by Cheapflights users on 10/29. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/286:50 amSDF - DUB
1 stop19h 40mMultiple Airlines
Fri 12/59:00 amDUB - SDF
2 stops39h 27mMultiple Airlines
Deal found 10/29$480
This Delta deal was found by Cheapflights users on 10/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/276:35 amSDF - DUB
1 stop20h 10mDelta
Thu 12/45:55 amDUB - SDF
2 stops23h 04mDelta
Deal found 10/30$482
This United Airlines deal was found by Cheapflights users on 10/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/272:35 pmSDF - DUB
1 stop14h 45mUnited Airlines
Thu 12/410:40 amDUB - SDF
1 stop11h 36mUnited Airlines
Deal found 10/30$484
This Delta deal was found by Cheapflights users on 10/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/134:15 pmSDF - DUB
1 stop12h 05mDelta
Thu 11/209:45 amDUB - SDF
2 stops19h 21mDelta
Deal found 10/29$488
This KLM deal was found by Cheapflights users on 10/29. 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.
Fri 11/282:53 pmSDF - DUB
1 stop11h 52mKLM
Fri 12/59:45 amDUB - SDF
1 stop12h 31mKLM
Deal found 10/29$508
This Air France deal was found by Cheapflights users on 10/29. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/1312:37 pmSDF - DUB
1 stop14h 08mKLM
Sat 12/209:45 amDUB - SDF
1 stop18h 18mKLM
Deal found 10/29$632
This American Airlines deal was found by Cheapflights users on 10/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/143:39 pmSDF - ORK
2 stops18h 46mAmerican Airlines
Sun 12/217:40 amORK - SDF
2 stops20h 50mAmerican Airlines
Deal found 10/29$831
This Cheapflightsfares deal was found by Cheapflights users on 10/29. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/24:26 pmSDF - ORK
2 stops25h 59mBritish Airways
Wed 11/57:40 amORK - SDF
2 stops20h 15mBritish Airways
Deal found 10/29$1,444

Cheapflights Fare Finder

 
Customize your flight search to find flights from Louisville to Ireland 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 October 30, 2025.
Use the filters below to find and compare flights from Louisville to Ireland that are best for you.

Fly from

Louisville

Fly to

Ireland

Route

Depart

Return

Price

LouisvilleDublin

SDF - DUB

SDFDUB

Louisville Intl

Wed 11/12

9:55 am-10:20 am

1 stop19h 25m

Dublin

Wed 11/19

9:00 am-12:26 pm

2 stops32h 26m

$455

LouisvilleDublin

SDF - DUB

SDFDUB

Louisville Intl

Fri 11/28

9:55 am-10:20 am

1 stop19h 25m

Dublin

Fri 12/5

9:00 am-1:12 pm

2 stops33h 12m

$455

LouisvilleDublin

SDF - DUB

SDFDUB

Louisville Intl

Fri 11/28

2:53 pm-7:45 am

1 stop11h 52m

Dublin

Fri 12/5

9:45 am-10:58 pm

1 stop18h 13m

$458

LouisvilleDublin

SDF - DUB

SDFDUB

Louisville Intl

Tue 2/10

6:53 pm-3:45 pm

2 stops15h 52m

Dublin

Tue 2/17

10:45 am-9:45 pm

2 stops16h 00m

$458

LouisvilleDublin

SDF - DUB

SDFDUB

Louisville Intl

Wed 11/12

9:00 am-7:30 am

2 stops17h 30m

Dublin

Wed 11/19

9:00 am-12:26 pm

2 stops32h 26m

$460

LouisvilleDublin

SDF - DUB

SDFDUB

Louisville Intl

Fri 11/28

7:00 am-10:20 am

2 stops22h 20m

Dublin

Fri 12/5

9:00 am-1:12 pm

2 stops33h 12m

$460

LouisvilleDublin

SDF - DUB

SDFDUB

Louisville Intl

Thu 1/8

8:29 am-7:30 am

2 stops18h 01m

Dublin

Thu 1/22

5:00 am-5:37 pm

2 stops17h 37m

$468

LouisvilleDublin

SDF - DUB

SDFDUB

Louisville Intl

Thu 1/8

11:10 am-7:10 am

2 stops15h 00m

Dublin

Thu 1/15

5:00 am-7:43 pm

2 stops19h 43m

$476

LouisvilleDublin

SDF - DUB

SDFDUB

Louisville Intl

Sun 2/8

3:33 pm-10:15 am

2 stops13h 42m

Dublin

Tue 2/17

11:30 am-9:12 pm

2 stops14h 42m

$479

LouisvilleCork

SDF - ORK

SDFORK

Louisville Intl

Wed 3/4

4:30 pm-3:00 pm

2 stops17h 30m

Cork

Sun 3/8

6:00 am-9:55 pm

2 stops20h 55m

$527

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

Showing 1-10 of 12 results
1
2

Best time to book a flight from Louisville to Ireland

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

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

Currently, February is the cheapest month in which you can book a flight from Louisville to Ireland (average of $467). Flying from Louisville to Ireland in June is currently the most expensive (average of $676). 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 IE?

Find hourly flight availability from Louisville to Ireland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 30, 2025.

One of the essential ways to save on airfare from Louisville to Ireland is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the afternoon could potentially save you up to 17% on airfare.

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

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

Travelers seeking maximum savings on their Louisville to Ireland 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.

Reviews of airlines servicing Ireland

Get insights into the airlines that provide service to Ireland. 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 Ireland. Reviews last updated October 30, 2025.
See what other customers who have flown with Delta, KLM, and United Airlines from Louisville to Ireland have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
7,998 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Overall

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Delta
7.9
Good
7,998 reviews
Delta
7.9
Good
7,998 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Overall

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
KLM
7.7
Good
1,406 reviews
Delta
7.9
Good
7,998 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Overall

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
United Airlines
7.4
Good
8,998 reviews
Delta
7.9
Good
7,998 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Overall

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
American Airlines
7.2
Good
11,035 reviews
Delta
7.9
Good
7,998 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Overall

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Aer Lingus
7.2
Good
1,365 reviews
Delta
7.9
Good
7,998 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Overall

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.

Related info for your journey

Find useful and relevant information for your journey from Louisville to Ireland. 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 from for flights from Louisville to Ireland?

    Louisville Intl (SDF), located 5.3 mi from the city center, is the airport you fly out of when you book flights from Louisville to Ireland.

  • How long is the flight from Louisville to Ireland?

    For as low as $458, United Airlines can have you in Ireland from Louisville in 11h 52m. Louisville and Ireland are separated by a distance of 3757 mi. This flight may include one or multiple stops.

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Louisville to Ireland (average of $467). Flying from Louisville to Ireland in June is currently the most expensive (average of $676). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Louisville to Ireland

See prices for flight routes from nearby airports that may be better suited for you.
Nashville to Heathrow flights
Cincinnati to Heathrow flights
Nashville to Gatwick flights
Cincinnati to Charles de Gaulle flights
Nashville to Dublin flights
Cincinnati to Gatwick flights
Nashville to London City flights
Nashville to Charles de Gaulle flights
Nashville to Keflavik Intl flights
Nashville to Orly flights
Cincinnati to London City flights
Nashville to Leonardo da Vinci/Fiumicino flights
Cincinnati to Orly flights
Nashville to Stansted flights
Cincinnati to Dublin flights
Cincinnati to Istanbul flights
Nashville to Lisbon flights
Nashville to Frankfurt flights
Cincinnati to Frankfurt flights
Nashville to Barcelona-El Prat flights
Cincinnati to Leonardo da Vinci/Fiumicino flights
Nashville to Istanbul flights
Nashville to Madrid flights
Cincinnati to Malpensa flights
Knoxville to Charles de Gaulle flights
Cincinnati to Barcelona-El Prat flights
Cincinnati to Linate flights
Cincinnati to Amsterdam flights
Louisville to Malpensa flights
Nashville to Edinburgh flights
Nashville to Amsterdam flights
Cincinnati to Stansted flights
Cincinnati to Madrid flights
Cincinnati to Sabiha Gokcen flights
Cincinnati to Edinburgh flights
Knoxville to Heathrow flights
Louisville to Frankfurt flights
Nashville to Sabiha Gokcen flights
Louisville to Charles de Gaulle flights
Louisville to Heathrow flights
Cincinnati to Lisbon flights
Cincinnati to Oslo Gardermoen flights
Lexington to Heathrow flights
Cincinnati to Krakow flights
Cincinnati to Athens flights
Nashville to Budapest flights
Nashville to Glasgow Intl flights
Knoxville to Frankfurt flights
Cincinnati to Zurich flights
Cincinnati to Bruxelles-National flights

Top 6 airlines flying from Louisville to Ireland

Discover the top 6 airlines that operate flights from Louisville to Ireland. 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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$485Average$914FlexibilityNo cancel feeOn-time71%
Scandinavian AirlinesCheapest$491Average$679FlexibilityNo cancel feeOn-time77%
DeltaCheapest$531Average$824FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$531Average$640FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$541Average$993FlexibilityNo cancel feeOn-time69%
Aer LingusCheapest$752Average$1,371FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.