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Keflavik Intl

$635+ Cheap flights from Louisville (SDF) to Keflavik Intl (KEF)

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 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — KEF
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
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Cheap flight deals from Louisville to Keflavik Intl

Cheapest flights from Louisville to Keflavik Intl
Explore the most affordable flight options available from Louisville to Keflavik Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 29, 2026.

This KLM deal was found by Cheapflights users on 1/27. 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 5/121:20 pm
SDF
-
KEF
1 stop14h 20m
KLM
Wed 5/209:30 am
KEF
-
SDF
1 stop17h 20m
KLM
Deal found 1/27$635
This United Airlines deal was found by Cheapflights users on 1/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/129:00 am
SDF
-
KEF
1 stop19h 30m
United Airlines
Tue 8/259:15 am
KEF
-
SDF
2 stops35h 34m
United Airlines
Deal found 1/28$684
This United Airlines deal was found by Cheapflights users on 1/27. 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 8/1811:00 am
SDF
-
KEF
1 stop17h 30m
United Airlines
Tue 8/2510:00 am
KEF
-
SDF
2 stops34h 49m
United Airlines
Deal found 1/27$689
This United Airlines deal was found by Cheapflights users on 1/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/116:00 pm
SDF
-
KEF
2 stops33h 55m
United Airlines
Tue 8/259:15 am
KEF
-
SDF
2 stops35h 34m
United Airlines
Deal found 1/28$694
This American Airlines deal was found by Cheapflights users on 1/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/128:03 am
SDF
-
KEF
3 stops21h 57m
Multiple Airlines
Wed 5/208:35 am
KEF
-
SDF
2 stops18h 52m
Multiple Airlines
Deal found 1/28$700
This KLM deal was found by Cheapflights users on 1/27. 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 8/184:00 pm
SDF
-
KEF
1 stop11h 40m
KLM
Tue 8/259:30 am
KEF
-
SDF
1 stop10h 14m
KLM
Deal found 1/27$704

Find flight deals from Louisville to Keflavik Intl

Discover tips and strategies to find the most affordable flight options for your journey from Louisville (SDF) to Keflavik Intl (KEF). 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 January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$635
(KLM)

Popular in

January

Cheapest in

August

Average price

$2,184
Provider with most accurate pricing for Louisville Intl-Reykjavik Keflavik Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Louisville Intl-Reykjavik Keflavik Intl flights.
Search Deals
From Louisville Intl to Reykjavik Keflavik Intl
Search Deals
Highest demand for flights based on searches. 50% potential increase in price ($1,096 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 12% potential price decrease ($122 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Louisville to Keflavik Intl 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 January 29, 2026.
Use the filters below to find and compare flights from Louisville to Reykjavik Keflavik Intl Airport that are best for you.

Fly from

Louisville

Fly to

Keflavik Intl

Route

Depart

Return

Price

LouisvilleReykjavik

SDF - KEF

SDFKEF

Louisville Intl

Tue 5/12

1:20 pm-7:40 am

1 stop14h 20m

Reykjavik Keflavik Intl

Wed 5/20

9:30 am-10:50 pm

1 stop17h 20m

$635

LouisvilleReykjavik

SDF - KEF

SDFKEF

Louisville Intl

Tue 5/12

8:03 am-10:00 am

3 stops21h 57m

Reykjavik Keflavik Intl

Wed 5/20

8:35 am-11:27 pm

2 stops18h 52m

$700

LouisvilleReykjavik

SDF - KEF

SDFKEF

Louisville Intl

Tue 7/28

10:15 am-6:20 am

1 stop16h 05m

Reykjavik Keflavik Intl

Wed 8/5

11:25 am-8:52 pm

2 stops13h 27m

$814

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

  • Most accurate provider: When it comes to deals on Louisville-Reykjavik Keflavik Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Louisville-Reykjavik Keflavik Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Louisville-Reykjavik Keflavik Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Louisville-Reykjavik Keflavik Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Louisville-Reykjavik Keflavik Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Louisville to Keflavik Intl

Have a flexible travel schedule? Discover the best time to fly to Keflavik Intl 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.

Related info for your journey

Find useful and relevant information for your journey from Louisville to Keflavik Intl. 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 Reykjavik Keflavik Intl?

    If you book a flight to Reykjavik Keflavik Intl from Louisville, you will be flying from Louisville Intl, which is the city’s only airport. Louisville Intl (SDF) is located 5.3 mi from the center of Louisville. There are 0 flights from Louisville Intl to Reykjavik Keflavik Intl per day from 0 different airlines.

  • How long is the flight from Louisville to Reykjavik Keflavik Intl Airport?

    Departing from Louisville to Reykjavik Keflavik Intl Airport will take you 14h 20m. The distance from Louisville to Reykjavik Keflavik Intl Airport is about 3084 mi.

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

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

  • How can I find direct flights from Louisville to Keflavik Intl?

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

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

    Yes. Cheapflights offers flight deals from Louisville to Keflavik Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near Reykjavik Keflavik Intl Airport?

Book flights to Reykjavik Keflavik Intl Airport if you plan to visit one of these locations
Keflavik
Hveragerdi

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