$422 Find Cheap Flights from Louisville to Denmark

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 Denmark departing on 5/24. 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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Book Cheap Louisville to Denmark Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Louisville to Denmark 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 Denmark

Sat, Mar 28 - Sat, Apr 4
United Airlines Logo
5:45 pm - 4:20 pm
SDF
-
CPH
41h 35m
2 stops
United Airlines Logo
12:40 pm - 9:25 am
CPH
-
SDF
50h 45m
2 stops
$627United Airlines
Sat, Mar 28 - Sat, Apr 4
Scandinavian Airlines Logo
2:25 pm - 7:00 am
SDF
-
CPH
11h 35m
1 stop
Scandinavian Airlines Logo
1:35 pm - 11:57 pm
CPH
-
SDF
16h 22m
1 stop
$670Scandinavian Airlines
Wed, Feb 25 - Sun, Mar 1
United Airlines Logo
9:00 am - 12:25 pm
SDF
-
CPH
21h 25m
2 stops
United Airlines Logo
6:50 am - 8:09 pm
CPH
-
SDF
19h 19m
2 stops
$725United Airlines
Wed, Feb 25 - Sun, Mar 1
United Airlines Logo
9:00 am - 12:25 pm
SDF
-
CPH
21h 25m
2 stops
United Airlines Logo
10:05 am - 8:09 pm
CPH
-
SDF
16h 04m
2 stops
$726United Airlines
Sun, May 24 - Mon, Jun 8
Finnair Logo
7:12 pm - 6:40 pm
SDF
-
CPH
17h 28m
2 stops
Finnair Logo
7:25 pm - 11:19 pm
CPH
-
SDF
33h 54m
2 stops
$745Finnair
Sun, May 24 - Mon, Jun 8
Finnair Logo
7:12 pm - 6:40 pm
SDF
-
CPH
17h 28m
2 stops
Finnair Logo
7:25 pm - 11:19 pm
CPH
-
SDF
33h 54m
2 stops
$748Finnair
Sun, May 31 - Fri, Jun 12
Air Canada Logo
7:30 am - 10:50 am
SDF
-
CPH
45h 20m
2 stops
Air Canada Logo
12:15 pm - 4:49 pm
CPH
-
SDF
34h 34m
2 stops
$775Air Canada
Sun, May 31 - Thu, Jun 11
Air Canada Logo
7:30 am - 10:50 am
SDF
-
CPH
45h 20m
2 stops
Air Canada Logo
12:45 pm - 8:14 pm
CPH
-
SDF
37h 29m
2 stops
$780Air Canada
Wed, May 27 - Wed, Jun 10
United Airlines Logo
6:00 am - 11:05 am
SDF
-
CPH
23h 05m
2 stops
United Airlines Logo
12:15 pm - 11:15 pm
CPH
-
SDF
17h 00m
2 stops
$793United Airlines
Sun, May 24 - Mon, Jun 8
American Airlines Logo
6:25 pm - 11:35 am
SDF
-
CPH
11h 10m
1 stop
American Airlines Logo
8:50 am - 10:16 pm
CPH
-
SDF
19h 26m
2 stops
$794American Airlines
Booking Insights

KAYAK's insights & trends for Louisville to Denmark flights

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

Which airlines provide the cheapest flights from Louisville to Denmark?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Louisville to Denmark were found on United Airlines ($627) and Finnair ($745).

Good to know

Low seasonFebruary
Cheapest flight$422
Best time to beat the crowds with an average 30% drop in price.
Most popular time to fly and prices are also 28% lower on average.
Flight from Louisville to Copenhagen

FAQs - booking Denmark flights

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

    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 Denmark.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Louisville to Denmark 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 Denmark?

    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 from Louisville to Denmark with an airline and back with another airline.

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

    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 from Louisville to Denmark up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 4 airlines serving from Louisville to Denmark

 
Need help choosing which airline to fly with from Louisville to Denmark? 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.
7.9
DeltaOverall score based on 8184 reviews
7.2Food
7.8Entertainment
7.9Comfort
8.5Crew
8.1Boarding
Airline reviews

Sorry I didn't realize I was writing a review for each leg. Please see my previous review - it applies to the entire flight, not just a single leg.

2.0 MediocreZachariah, Feb 2026
ATL - TPA
Read more Delta reviews

Sorry I didn't realize I was writing a review for each leg. Please see my previous review - it applies to the entire flight, not just a single leg.

This is the first time I've been disappointed with Delta. I was called by Delta to see if I would volunteer to change flights since my original flight home was overbooked. I accepted. The modified booking only provided me a 35 minute layover - when you subtract the fact that boarding closes for a flight 15 minutes early, that gave me 20 minutes to run for one end of the airport to the other. I barely made it. On the 2.5 hour flight to Tampa, the crew repeatedly let us know over the intercom that they cannot serve drinks or snacks due to safety/turbulence. I would have accepted this reason if they did not CONTINUALLY SERVE DRINKS AND COOKED FOOD to First class. If safety is the excuse then the entire plane should be strapped in for safety. On top of this the air conditioning vents were not working correctly and the plane was uncomfortably warm. I love Delta and am a loyal Delta traveler, and I have never had an experience like this. I don't know if there's a disconnect between availability among third-party sites like KAYAK and the airlines or what, but when overbooking causes issues like this for travelers it should be reviewed and changes to the booking process should be made. I blame BOTH KAYAK and Delta for this terrible experience.

boarded at 5:30 pm, pushed away from gate at 6pm ... takeoff was not until ~6:45pm; disappointing

Smooth boarding, pleasant and professional lady checking us in. Crew service was excellent, again pleasant, but professional. Nice touch-down on landing! Thank you Delta. 💗

Originally, I was booked in economy. I paid several hundred additional dollars to upgrade to first class. Then I paid several more hundred dollars to change my flight to a slightly earlier flight. I asked if the changed flight would also seat me in first class, and I was told that it would. When I boarded the plane, however, I was seated in economy. So, I paid $500-600 more than I paid for my original ticket for an upgrade and a changed flight - received the changed flight (which was nice), but did not receive the upgrade. So, I was not completely satisfied.

Awesome! On time flight, early arrival, and a complimentary upgrade!

Paid for wifi that didn't work. No plug in seat to work. No entertainment.

We departed early and made up time in the air allowing us to arrive 30 minutes early. Capt was incredibly genuine and thanked every passenger for flying with Delta. Completely humble and professional!

Was forced to check in my small carry on, even though I informed the crew it has very fragile items inside

This was one of the worst flights I’ve been on in years. I upgraded to comfort and had such an uncomfortable experience. The person next to me was oversized - which I understand - however, they took up their space and mine. I could only use about 50% of my seat space to not be physically touching this person the entire flight and there was no spatial awareness. I also could not use the seat outlet because their body was obstructing it. It was very inconvenient. Their body kept touching me repeatedly during the flight and I felt very uncomfortable. To pay more for an upgraded space and then not even being able to use it was highly disappointing.

Both of my flights arrived early and check in process was smooth

Terrible. No customer service, no food, no drinks on a 6 hour premier economy booking.

Short flight, but no drink/snack service. The flights both going and coming were delayed.

Much better than Spirit. I was please by the easy fast check in and boarding

Check-in and in-flight staff were better than average. The seat was a fair size but too hard and not enough padding. The cushion/pillow provided is poor (thin and seems to be disposable ,it provides no effective cushioning or support). Food was OK-ish but no choice of inflight snacks and no easy place to get drinks other than water (I could ask for juice by intruding into the staff area at the back of the plane) Entertainment was very good actually. Overall better than I expected from a US-based airline (sorry!) but compared to ANA or Singapore it was so-so. (I live in Japan so they are my comparative airlines)

Everything was on time Will use united again for sure

Plane outlets in my row not working to charge phone. Staff response was, well it should be. Plug into seed for volume not working well. Had to find the sweet spot for plug in or it would shut off and on.

Wifi took a while to kick in and we had a maintenance issue that took over 40 mins at the gate in Washington before pulling back

Fine not above and beyond as I had a connection that was delayed due to maintenance

The power at the seat didn't work and the seat itself was difficult to adjust - this was a business class seat. Flight attendant gave me miles to compensate. The attendant was very professional and on top of his game the entire flight.

I was unable to rebook a flight booked through cheap flights. Could not rebook, despite premium eco.

Fantastic. The only thing - out of my six luggage one was lost in Copenhagen, however it was delivered Home 3 Days later so all great..

in Austria they made me check in my carry on luggage, and it never arrived in JFK... I had medication there on ice that is useless now, I filed a report and they still cant licate my luggage? what kind of joke is this?

The crew was friendly, the flight was pleasant. Thank you for your service!

Our originating flight into Copenhagen was an hour delayed, causing us to miss our main flight from Copenhagen to the US. There had been snow and we needed to be de-iced, but they seemed very slow getting the flight ready, with no explanation. The delay caused us to be put in with thousands stuck at the airport with an all day wait to get rebooked on a flight 2 days out.

Flight was completely full January 9th? I problem i had the stewardess was bumping into me constantly walking by? very annoying.. on Austrian air I dint have this issue at all...

One of our bags was never put on the flight in Copenhagen. Now that we're home in the USA, my wife is still without most of her clothes and personal items as she returns to work this week. Hoping for a quick resolution, but there seems to be little chance of speaking with an actual person in the process.

really nothing ...uncomfortable seating, cramped ....no better than a US short hopper flight.. never again

Amazing! Everyone was so nice and the food was so good!!

Cut out the nickel and dime pricing for "seat selection" and baggage, To do this on an international flight is just mind boggling. Seriously, why treat customers this way??? Nobody wants these hidden extra fees and everybody hates them. Also plane was too warm and no air vent, and water dripped from the ceiling at one point,

The seats are too uncomfortable for anyone over 5ft 8in. I'm 5'10" with a back and hip issue and I was in pai for the full duration of the flight.

The flight was on time/early, attentive crew, and everything overall went smoothly. Disappointed that WIFI was not working for the flight.

One day, I do so hope for a gluten free snack! Seems like with the rest of the world FINALLY figuring out what gluten free is, American Airlines would too. Fingers crossed!!

The flight was significantly delayed for 6.5 hours because of snow. There was no communication once the plane returned to the gate regarding when the flight would resume. Other flights were departing while our flight was being unloaded for reasons unknown. Our flight also seemed out of the queue regarding further deicing, refueling, and waiting to Taxi to the runway.

Flight was on time and the meal and service were good.

The accessible bathroom should be visible to people in Economy class.

Flight was delayed for 2 hours, then last minute the change to on time. The satélite location is far and a nightmare to get to.

This was a horrible experience. I’ve experienced several delays at this point and still not home. I was supposed to be home by 8:30 last night and here I sit at 7 am on a plane STILL unable to go home because of American Airlines.

Lexus in first class was absolutely amazing! Beat flight attendant i’ve ever seen.

Generally good. Flight left on time and the seats are comfortable. Plenty of space in front if you in you choose a comfort plus seat, completely worth spending the extra money given the amount of hours the flight lasts. The food tastes good but I would say it’s a the amount is too little. The crew was friendly and efficient. There was a some turbulence at different points into the flight. American Airlines has good deals to NZ if you book with plenty of time before you plan on going.

Everything you need to know for your flight from Louisville to Denmark

Information on your arrival and departure airports