$584 Find Cheap Flights from Washington, D.C. to Slovenia

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Washington, D.C. to Slovenia departing on 7/11. 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.
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Cheap Flight Deals from Washington, D.C. to Slovenia (WAS-SI0)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Washington, D.C. to Slovenia 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.

Recent round-trip flight deals from Washington, D.C. to Slovenia

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Washington, D.C. to Slovenia.
Discover the best prices for you by selecting your travel dates on KAYAK.
Choose your dates
 Logo
6:50 pm - 8:55 amBWI-LJU
32h 05m3 stops
 Logo
8:00 pm - 5:40 pmLJU-BWI
27h 40m3 stops
Tue, May 6 - Tue, May 13
 Logo
6:50 pm - 8:55 amBWI-LJU
32h 05m3 stops
 Logo
9:05 am - 5:40 pmLJU-BWI
14h 35m2 stops
Tue, May 6 - Tue, May 13
Turkish Airlines Logo
1:30 pm - 7:15 pmIAD-LJU
23h 45m1 stop
Turkish Airlines Logo
8:10 pm - 11:45 amLJU-IAD
21h 35m1 stop
$873Turkish Airlines
Find Deal
Thu, May 8 - Thu, May 15
Turkish Airlines Logo
1:30 pm - 7:15 pmIAD-LJU
23h 45m1 stop
Turkish Airlines Logo
8:10 pm - 11:45 amLJU-IAD
21h 35m1 stop
$881Turkish Airlines
Find Deal
Thu, May 8 - Thu, May 15
Lufthansa Logo
10:20 pm - 7:25 pmIAD-LJU
15h 05m1 stop
Lufthansa Logo
10:10 am - 9:09 pmLJU-IAD
16h 59m2 stops
$1,074Lufthansa
Find Deal
Wed, May 21 - Tue, Aug 19
Lufthansa Logo
10:20 pm - 7:25 pmIAD-LJU
15h 05m1 stop
Lufthansa Logo
10:00 am - 8:46 pmLJU-IAD
16h 46m2 stops
$1,087Lufthansa
Find Deal
Wed, May 21 - Wed, May 28
Delta Logo
12:25 pm - 11:35 amIAD-LJU
17h 10m2 stops
Delta Logo
12:35 pm - 11:35 pmLJU-IAD
17h 00m2 stops
$1,112Delta
Find Deal
Wed, May 21 - Wed, May 28
Delta Logo
2:35 pm - 11:35 amBWI-LJU
15h 00m2 stops
Delta Logo
12:35 pm - 12:48 amLJU-BWI
18h 13m2 stops
$1,137Delta
Find Deal
Tue, May 6 - Tue, May 13
SWISS Logo
8:45 pm - 6:35 pmIAD-LJU
15h 50m1 stop
SWISS Logo
10:50 am - 4:15 pmLJU-IAD
11h 25m1 stop
$1,257SWISS
Find Deal
Wed, Jul 16 - Sun, Aug 3
SWISS Logo
5:45 pm - 10:05 amIAD-LJU
10h 20m1 stop
SWISS Logo
7:20 pm - 2:05 pmLJU-IAD
48h 45m2 stops
$1,713SWISS
Find Deal
Sat, May 24 - Thu, May 29

KAYAK's insights & trends for Washington, D.C. to Slovenia flights

Get data-powered insights and trends into flights from Washington, D.C. to Slovenia to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest time of day to fly to Slovenia?

The average price for all round-trip flights from Washington, D.C. to Slovenia depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.
The cheapest time of day to fly to Slovenia is generally in the morning, when round-trip flights cost $736 on average. Morning departures are around 30% cheaper than evening flights, on average. The most expensive time of day to fly to Slovenia is generally in the evening, which is peak travel time and where the average cost of a ticket is $984.

What is the cheapest month to fly from Washington, D.C. to Slovenia?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. to Slovenia, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Washington, D.C. to Slovenia is January, when tickets cost $671 (return) on average. On the other hand, the most expensive months are April and June, when the average cost of round-trip tickets is $1,463 and $1,437 respectively.

Good to know

Low season

February

High season

June

Cheapest flight

$584
Best time to beat the crowds but there is an average 14% increase in price.
Most popular time to fly with an average 36% increase in price.
Flight from Washington, D.C. to Ljubljana

FAQs - booking Slovenia flights

  • How does KAYAK find such low prices on flights from Washington, D.C. to Slovenia?

    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 Washington, D.C. to Slovenia.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington, D.C. to Slovenia?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Washington, D.C. to Slovenia 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 Washington, D.C. to Slovenia?

    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 Washington, D.C. to Slovenia 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 Washington, D.C. to Slovenia?

    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 Washington, D.C. to Slovenia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top 3 airlines serving from Washington, D.C. to Slovenia

Need help choosing which airline to fly with from Washington, D.C. to Slovenia? 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.
7.5
SWISSOverall score based on 1572 reviews
8.2Crew
6.7Entertainment
7.4Comfort
7.0Food
7.6Boarding
Airline reviews

The biggest let down was with booking experience through Kayak. I booked a flight with checked bags on Kayak. Right away I got a message from travel agency that the flight is not confirmed and to call them. I called them and they said the flight I have booked is no longer available with the price I have booked it for and I can book it with about $100 more. I already had other options I could book with cheaper price so I asked them to cancel my booking. Then they said I can have the ticket with the same price but a date change which was not working for me as I had to be there for a seminar. So again I said no then they said they will cover the charges and confirm my flight. When comes time for check-in I see I have no checked bag option which means the travel agency deceived me saying I can have my booking as I had booked it. And at that point I ended up paying $155 for my checked bag going back and forth. I am extremely angry and unhappy with this experience

6.0 GoodMaryam, Mar 2025SFO - ZRH
Read more SWISS reviews

The biggest let down was with booking experience through Kayak. I booked a flight with checked bags on Kayak. Right away I got a message from travel agency that the flight is not confirmed and to call them. I called them and they said the flight I have booked is no longer available with the price I have booked it for and I can book it with about $100 more. I already had other options I could book with cheaper price so I asked them to cancel my booking. Then they said I can have the ticket with the same price but a date change which was not working for me as I had to be there for a seminar. So again I said no then they said they will cover the charges and confirm my flight. When comes time for check-in I see I have no checked bag option which means the travel agency deceived me saying I can have my booking as I had booked it. And at that point I ended up paying $155 for my checked bag going back and forth. I am extremely angry and unhappy with this experience

PLEASE DONT TAKE FORCEFULLY(SIZE APPROPRIATE) CARRY ONS FROM PASSENGERS WHO FOR SOME REASON NEED TO KEEP IT

It was great. My seat was comfortable. The bathrooms were clean . The service was superb . I travel a lot and I have been in 64 counties. I wish I could fly first class, even though I could , but I prefer to budget my yearly travelling expense on actual visiting , not on flight. Anyway, my point is that your economy was far much better than other airlines as good as Air France. The flight attendants and all crew were polite and very helpful and respectful. Thank you for making my long trip tolerable.

I slept the whole flight so I can't tell you about the food and there was no entertainment offered. Crew was very nice, seats were comfortable in business, and boarding was easy.

We are glinting with united , but over all very disappointed

It is a good airlines, very professional very good food. I wish they offered free luggage is the only thing.

I like how professional, fast and good the whole experience was.

Everything was great except food . It as okay not good not bad

Edelweiss is now Nickle&dimming, not even a complimentary wine on the intercontinental flight. Sitting space is the smallest I have ever seen.

I have no complaints. The crew was attentive, pleasant and heloful

Ordered Vegan meal - it was ok, but not exceptional. Seat ok row 39 middle section aisle. Nearly full flight - crew was busy but they did the best they could. There was a USB A port at the seat. I listened to my own music and only looked at flight information. One nice thing was the connection information was made available in the screen.

Very nice and friendly crew. Boarding system can be improved.

The Etickets had been changed (Why?) without notice ; Hence, that caused troubles when checking in. Not until I contacted my ticket agent and was given correct Etickets could I then check in.

Cleanliness of seats, trays, storage pockets need more attention, but everything else was good.

A great airline, no complaints at all. My experience with Cheap Tickets was very disappointing however. Two hours after purchasing the flight they called to tell me that the ticket price had gone up. I’ve never heard of such a thing. That is called false advertising; I will never use this ticketing service again and will warn all friends to never use it.

One of the worst check in process at the DIA as well as the boarding counter Changed seat at the last minute and assigned middle seat while I paid for window seat. Requested many times but to no avail . horrible customer service and very poor process Requesting refund for seat that was changed last minute

Good overall flight. Excellent crew. Food options could be improved.

Vegan food tasted good. Restroom could be kept cleaner. Seat tray table was a bit tilted so food tray kept sliding down a bit. Flight crew can be a little more friendly, caring and approachable. Their faces lacked smiles and tone was stern.

Flight was delayed then we had to redirect for medical emergency during which time we had no information on what is the plan. The connecting flight was also delayed.

Professional & courteous cabin crew. Food was very good even in economy class

Good service … bus transfer upon arrival from plane to terminal: atrocious!!!

helpful and friendly. The Lufthanza people I dealt with before my holiday were so unhelpful by comparison.

We had a 1 1/2 hour delay before we left Denver. When we arrive to Frankfort, they didn’t announce that people with connecting flights to exit the plane first. My next flight was already boarding when we we taxiing in to the gate. I waited another 10 minutes to get off the plane. I had to run to catch my next flight. I mean run! I made it with one minute to spare, but my luggage did not. My luggage came two hours later on a different flight.

My flight was late from US to Frankfurt so I missed my connecting flight flight and I had to wait for long to catch the next flight which was very tiring. Otherwise everyone was very nice.

It would have been nice if my luggage had made it onto my connecting flight as well. Now I have to wait for my luggage to be delivered and that might take a while, which certainly put a damper on the entire experience.

Crew was not happy. Very uncomfortable seats. When person leans back in front of you the screen is too close to me. Food was awful.

They lost my luggage and despite all follow ups through emails and phone calls they don’t give me an update

Everything went really well. Snacks could be better and there was no tea/coffee service after dinner. Crew was helpful and friendly.

Both flights were delayed and we missed our connection. Our second flight was delayed 3 times. I have always had great service and never any problems with my flights on Lufthansa. My last two flights were, unfortunately, awful. I fly quite often to Germany and have had better luck with United than Lufthansa.

Lufthansa charged me $280 to take skiiis when in the US the boot bag and skiis are one check-in bag. This was not advertised and a real shock at the airport. They only took the boot bag as a check-in item. The seats have been squeezed together like any economy airline and legroom is not as good as it used to be. Otherwise, the flight was fine and staff was helpful for making my connection.

Everything you need to know for your flight from Washington, D.C. to Slovenia

Cabin class types available on flights to Slovenia

Cabin classes available on flights to Slovenia. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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