SDF - KEF

$435 Find Cheap Flights from Louisville to Reykjavik - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Louisville to Keflavik Intl departing on 8/14. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$820
Multiple Airlines
Wed 10/21Wed 10/28
SDF - KEF • 1 stop
Cheapest one-way
$435
WestJet
Fri 8/14
SDF - KEF • 3 stops
Top airlines
Cheapest • from $849 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Louisville and Keflavik Intl. You'll need at least 1 connection.
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We hope you love your trip to Keflavik Intl!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Louisville to Keflavik Intl (SDF-KEF)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Louisville to Keflavik Intl that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Louisville to Keflavik Intl

Wed, Oct 21 - Wed, Oct 28
Multiple Airlines Logo
10:55 am - 6:40 am
SDF
-
KEF
15h 45m
1 stop
Multiple Airlines Logo
4:45 pm - 8:29 pm
KEF
-
SDF
31h 44m
2 stops
$820Multiple Airlines
Tue, Oct 20 - Tue, Oct 27
Multiple Airlines Logo
1:05 pm - 9:10 am
SDF
-
KEF
16h 05m
1 stop
Multiple Airlines Logo
5:00 pm - 11:00 pm
KEF
-
SDF
10h 00m
1 stop
$828Multiple Airlines
Tue, Oct 20 - Tue, Oct 27
Multiple Airlines Logo
3:55 pm - 6:25 am
SDF
-
KEF
10h 30m
1 stop
Multiple Airlines Logo
5:00 pm - 11:00 pm
KEF
-
SDF
10h 00m
1 stop
$828Multiple Airlines
Mon, Oct 19 - Mon, Oct 26
Multiple Airlines Logo
5:10 pm - 6:25 am
SDF
-
KEF
9h 15m
1 stop
Multiple Airlines Logo
5:00 pm - 12:10 am
KEF
-
SDF
11h 10m
1 stop
$828Multiple Airlines
Wed, Oct 21 - Wed, Oct 28
Multiple Airlines Logo
10:55 am - 6:40 am
SDF
-
KEF
15h 45m
1 stop
Multiple Airlines Logo
4:45 pm - 8:29 pm
KEF
-
SDF
31h 44m
2 stops
$829Multiple Airlines
Wed, Oct 21 - Wed, Oct 28
Multiple Airlines Logo
10:55 am - 6:40 am
SDF
-
KEF
15h 45m
1 stop
Multiple Airlines Logo
4:45 pm - 8:29 pm
KEF
-
SDF
31h 44m
2 stops
$831Multiple Airlines
Wed, Oct 21 - Wed, Oct 28
Multiple Airlines Logo
3:55 pm - 6:25 am
SDF
-
KEF
10h 30m
1 stop
Multiple Airlines Logo
5:00 pm - 11:35 am
KEF
-
SDF
22h 35m
1 stop
$836Multiple Airlines
Sun, Oct 18 - Mon, Oct 26
United Airlines Logo
6:16 pm - 8:50 am
SDF
-
KEF
10h 34m
1 stop
United Airlines Logo
12:00 pm - 6:32 pm
KEF
-
SDF
10h 32m
1 stop
$856United Airlines
Sun, Oct 18 - Mon, Oct 26
United Airlines Logo
10:25 am - 8:50 am
SDF
-
KEF
18h 25m
1 stop
United Airlines Logo
12:00 pm - 1:23 pm
KEF
-
SDF
29h 23m
2 stops
$861United Airlines
Sun, Oct 18 - Mon, Oct 26
United Airlines Logo
1:50 pm - 8:50 am
SDF
-
KEF
15h 00m
1 stop
United Airlines Logo
12:00 pm - 1:01 pm
KEF
-
SDF
29h 01m
2 stops
$861United Airlines
Booking Insights

KAYAK's insights & trends for Louisville to Keflavik Intl flights

Get data-powered insights and trends into flights from Louisville to Keflavik Intl to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Louisville to Reykjavik?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 5 days.

In the past 5 days, the cheapest round-trip tickets from Louisville to Reykjavik were found on Scandinavian Airlines ($849) and United Airlines ($856).

Good to know

Cheapest flight

$435
Flight from Louisville to Reykjavik

When to book flights from Louisville to Keflavik Intl

Are your dates flexible? Find out the best times to travel from Louisville to Keflavik Intl based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Louisville to Reykjavik flights

  • What is the cheapest flight from Louisville to Reykjavik Keflavik Intl Airport?

    In the last 5 days, the lowest price for a flight from Louisville to Reykjavik Keflavik Intl Airport was $435 for a one-way ticket and $820 for a round-trip.

  • Do I need a passport to fly between Louisville and Reykjavik?

    A passport is required to fly from Louisville to Reykjavik.

  • Which aircraft models fly most regularly from Louisville to Reykjavik?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Louisville to Reykjavik?

    Star Alliance is the only airline alliance operating flights between Louisville and Reykjavik.

  • How does KAYAK find such low prices on flights from Louisville to Reykjavik?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Louisville to Reykjavik.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Louisville to Reykjavik?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Reykjavik from Louisville is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Louisville to Reykjavik?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Reykjavik with an airline and back to Louisville with another airline. Booking your flights between Louisville and KEF can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Louisville to Reykjavik?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Reykjavik from Louisville up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Louisville to Keflavik Intl

 
See real verified KAYAK customer reviews for airlines flying from Louisville to Reykjavik. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Louisville to Keflavik Intl? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 10041 reviews
6.6Food
7.3Comfort
7.7Boarding
8.1Crew
7.1Entertainment
Airline reviews

Wonderful flight! The crew was good, check-in was good and orderly and the flight was uneventful and good.

10.0 ExcellentAnonymous, Jul 2026
JAX - IAH
Read more United Airlines reviews

Wonderful flight! The crew was good, check-in was good and orderly and the flight was uneventful and good.

Gluten free snack options and meals that offer both gluten free and dairy free.

The pilot was late so we didn’t take off til almost 2 hours late.

The SFO lounge closes at 12 midnight. My flight took off at 2AM

Not a bad flight but a long delay boarding and taking off due to the pilot not arriving on time.

The experience with United Airlines was excellent; however, the experience with Houston Intercontinental Airport (IAH) was horrible. Although our flight departed from Terminal B, we had to go through security in Terminal C and then get on a train for travel to Terminal B. Additionally, there was significant walking required to get to the boarding location.

Worst service- attendants dont want to help and sat us in front of bathroom

United cancelled the flight after a 2 hour delay. The only choice was a 24 hour delay which was then 3 hours delayed.

The male air hostess was rude and didn’t provide good customer service. Didn’t even offer me a drink

This trip was a Christmas gift to our family. We were flying from Lexington to Palm Springs. When we were checking in the ticket agent said one bags was over weight by 4 LBS. We were flying first class which has baggage weight of 70 LBS per bag, one bag was 54LBS. We then had to take items from one bag to another. The agent also saw we had a dog with us. Once on the plane we were seated with the dog in the carrier. The United ticket agent came in the plane with two other people, I believe one was TSA and the other some security officer. The United agent said we had not paid for the dog ticket. We had paid for the ticket when we purchased our tickets. She did not give me time to find the email receipt. She then threatened all three of us with either I come with her or she would have all three of physically removed from the plane. I left the plane to pay for another ticket. She had to take my credit back to where we checked in. She acted as if it needed to be done immediately. She said we had 3 minutes. We then sat at the gate for approximately another 45 minutes. This was so embarrassing…to be threatened to be removed from a plane that we paid for all tickets including the dog. The flight attendance on the next leg of our trip were not very attentive to the passengers. On the plus side all the flights were on time. All in all, this was a miserable way to start a holiday vacation. United Airlines showed no compassion towards the whole incident. I feel we were purposely neglected.

Everything you need to know for your flight from Louisville to Keflavik Intl

Information on your arrival and departure airports