BOS - LJU

$327 Find Cheap Flights from Boston to Ljubljana

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boston to Ljubljana departing on 7/21. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Ljubljana

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to Ljubljana, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to Ljubljana, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$521
Typical prices: $589-$757
Multiple Airlines
Wed 3/25Wed 4/1
BOS - LJU • 1 stop
Cheapest one-way
$327
Multiple Airlines
Tue 7/21
BOS - LJU • 3 stops
Top airlines
Lufthansa
Cheapest • from $522 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
4 weeks
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 48% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
February
Cheapest • 36% price drop
May
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Ljubljana!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Boston to Ljubljana (BOS-LJU)

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

Wed, Mar 25 - Wed, Apr 1
Multiple Airlines Logo
10:50 pm - 1:35 pm
BOS
-
LJU
9h 45m
1 stop
Multiple Airlines Logo
10:35 am - 11:59 pm
LJU
-
BOS
19h 24m
2 stops
$521Multiple Airlines
Tue, Mar 10 - Tue, Mar 17
Lufthansa Logo
2:15 pm - 9:55 am
BOS
-
LJU
14h 40m
2 stops
Lufthansa Logo
1:20 pm - 7:35 pm
LJU
-
BOS
11h 15m
1 stop
$522Lufthansa
Tue, Mar 3 - Tue, Mar 10
SWISS Logo
9:50 pm - 2:05 pm
BOS
-
LJU
10h 15m
1 stop
SWISS Logo
2:55 pm - 9:20 pm
LJU
-
BOS
11h 25m
1 stop
$523SWISS
Tue, Mar 10 - Tue, Mar 17
Multiple Airlines Logo
10:50 pm - 10:25 pm
BOS
-
LJU
18h 35m
1 stop
Multiple Airlines Logo
1:20 pm - 7:35 pm
LJU
-
BOS
11h 15m
1 stop
$524Multiple Airlines
Wed, Apr 29 - Tue, May 5
Turkish Airlines Logo
9:50 pm - 12:55 pm
BOS
-
LJU
33h 05m
1 stop
Turkish Airlines Logo
9:40 am - 7:55 pm
LJU
-
BOS
16h 15m
1 stop
$529Turkish Airlines
Mon, Mar 9 - Mon, Mar 16
Multiple Airlines Logo
11:10 pm - 2:05 pm
BOS
-
LJU
9h 55m
1 stop
Multiple Airlines Logo
6:50 am - 2:10 pm
LJU
-
BOS
12h 20m
1 stop
$530Multiple Airlines
Mon, Mar 16 - Mon, Mar 23
Multiple Airlines Logo
11:10 pm - 10:25 pm
BOS
-
LJU
18h 15m
1 stop
Multiple Airlines Logo
8:10 pm - 7:35 pm
LJU
-
BOS
28h 25m
1 stop
$532Multiple Airlines
Sat, Mar 7 - Tue, Mar 24
Turkish Airlines Logo
8:00 pm - 6:40 pm
BOS
-
LJU
16h 40m
1 stop
Turkish Airlines Logo
9:20 am - 7:05 pm
LJU
-
BOS
14h 45m
1 stop
$535Turkish Airlines
Wed, Mar 25 - Wed, Apr 1
Lufthansa Logo
9:40 pm - 10:10 pm
BOS
-
LJU
19h 30m
2 stops
Lufthansa Logo
1:15 pm - 5:40 pm
LJU
-
BOS
10h 25m
1 stop
$540Lufthansa
Wed, Apr 22 - Tue, Apr 28
SWISS Logo
5:20 pm - 11:05 pm
BOS
-
LJU
23h 45m
1 stop
SWISS Logo
10:50 am - 7:55 pm
LJU
-
BOS
15h 05m
1 stop
$542SWISS
Booking Insights

KAYAK's insights & trends for Boston to Ljubljana flights

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

How much is a round-trip flight from Boston to Ljubljana?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Boston to Ljubljana departing in March.

What is the cheapest month to fly from Boston to Ljubljana?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boston to Ljubljana, 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 Boston to Ljubljana is February, where tickets cost $571 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $1,719 and $1,425 respectively.

How far in advance should I book a flight from Boston to Ljubljana?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Boston to Ljubljana, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Boston to Ljubljana, you should book around 4 weeks before departure, which saves you about 48% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

Good to know

Low seasonNovember
Cheapest flight$327
Best time to beat the crowds with an average 17% drop in price.
Most popular time to fly with an average 22% increase in price.
Flight from Boston to Ljubljana

When to book flights from Boston to Ljubljana

Are your dates flexible? Find out the best times to travel from Boston to Ljubljana 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 flights from Boston to Ljubljana

  • What is the cheapest flight from Boston to Ljubljana?

    In the last 3 days, the lowest price for a flight from Boston to Ljubljana was $327 for a one-way ticket and $521 for a round-trip.

  • Do I need a passport to fly between Boston and Ljubljana?

    Yes, you’ll need a passport to travel to Ljubljana from Boston.

  • Which aircraft models fly most regularly from Boston to Ljubljana?

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

  • Which airline alliances offer flights from Boston to Ljubljana?

    SkyTeam, and Star Alliance are the airline alliances operating flights between Boston and Ljubljana, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Boston to Ljubljana, Delta or KLM?

    The two airlines most popular with KAYAK users for flights from Boston to Ljubljana are Delta and KLM. With an average price for the route of $994 and an overall rating of 7.9, Delta is the most popular choice. KLM is also a great choice for the route, with an average price of $599 and an overall rating of 7.7.

  • How does KAYAK find such low prices on flights from Boston to Ljubljana?

    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 Boston to Ljubljana.

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

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

    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 Ljubljana with an airline and back to Boston with another airline. Booking your flights between Boston and LJU 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 Boston to Ljubljana?

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

Reviews of the top 5 airlines serving from Boston to Ljubljana

 
See real verified KAYAK customer reviews for airlines flying from Boston to Ljubljana. 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 Boston to Ljubljana? 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 8177 reviews
8.5Crew
7.2Food
8.1Boarding
7.8Entertainment
7.9Comfort
Airline reviews

The flight was great as well as the airline staff

10.0 ExcellentPatty, Feb 2026
TPA - ATL
Read more Delta reviews

The flight was great as well as the airline staff

First class and monitors weren’t working for mine & my husbands. Eventually fixed, but quite annoyed as we bought first class. Also, No foot rests.

Prior to takeoff, the pilot told us there was a possibility of not being able to land and going to Portland. Well that happened, we took off and then did 8 loops around Spokane before the pilot told us we ran out of fuel and had to go to Portland. So for a 35 minute flight we have now been on the plane for 3 hours (boarded at 6:50 am and landed in Portland at 10:30). Then, we just sat in Portland's airport with no updates of when we can start heading back. All of a sudden, our pilots and crew just left, leaving us stranded in a different city and state. We continued to sit in Portland until we finally got a new crew assigned and boarded the plane (This was from 10:30-2). We then sat on the plane for an additional hour before take off because they had to count us multiple times. We finally landed in Spokane at 3:55 PM. So a flight that should have taken at max an hour took us 10 hours and we missed the majority of the recruiting event we went for.

It was delayed but other than that it was great.

Got on the plane and sat there for an hour before departure.

Second flight in a row where the entertainment system is broken. 5 hour long flight with no entertainment and flight attendants did not seem interested in resolving the matter. Very shocked to be treated this poorly considering I paid for a first class experience and have Diamond Medallion status.

They double booked seats, the gate staff changed my ticket as I was boarding she went over to the computer and changed it without telling me. She messed up an entire three row section for me and others. Other travelers were outraged but the gate staff were so rude, so condescending saying it wasn't their problem to solve. I would rate this a zero if I could. Will not fly Delta again I'll stick with United and American.

It was nt delta. It was aeromexo. Service was awful. They served a very small drink and NO snack for a 3hr and 35min flight. Then for the first 30 min of the flight is was talk and talk over head interruption the movie/ show i picked to watch.

Comfort seating was on the tight side. Maybe it was a smaller plane(?)

I was given middle seat on this flight and prior Boston to Seoul flight That is a problem for long flights, Kayak system did not give me a change to select my seats and assigned me middle seats regardless of my elevated status in Delta. This needs immediate attention.

Delay on my previous leg, had to run to catch my flight. But that happens. Overall ok.

Delay and had to run between flight to get my connection due to this delay but besides that the overall experience was ok. I arrived with just an hour of delay.

Flight was ok but lack of communication cost me to literally beg to be put on another flight as connecting flight had departed

They forgot to serve food and the crew was very unfriendly. Never experienced such a bad KLM flight. Usually fly from Toronto. New York was different.

The immigration hall in Amsterdam was understaffed, so passport checking was slower than it should be for a major airport. They need to get the automatic readers up and running for non EU passport holders. Waiting in line after a long flight feels a bit abusive.

Over 1 Hr delay. No APU so no AC on ground. Plane was hot during boarding and then they closed the doors over 20 minutes before engine start so interior of plane was steamy hot and stuffy. Could have been helped by opening doors until ready to depart.

Short flight so it was okay. Nice crew, all very pleasant and professional. We were near the back in row 27 so just as we got our drinks, we started our descent so had to drink very quickly!

KLM remains a quality flag carrier airline which maintains its standards whilst all their competitors are lowering theirs.

The baggage drop-off in Stuttgart is bad: after online check-in you cannot use the automated baggage drop off as indicated on the website. You can use the terminals but have to cue to 1 of three open and slowly working counters to drop the bags. took about 45 minutes wait time.

Our first flight was delayed so we missed our connecting flight. However it was easy to book a later flight on their app.

The flight itself was fine, but due to a snow delay my connection to Lisbon was delayed by six hours. Despite this, Swiss Air still managed to lose my luggage. Not acceptable. Someone else on the flight also lost their luggage.

Bad experience overall. Crew did not provide food for our 2 year old (even though we specifically bought a child infant seat for her and literally bought another full price flight), which was unacceptable. And we had to pay $310 each way to carry our ski equipment even though they advertise it as something that is free. Tickets were purchased the same way as usual, but they told us we had Economy Light tickets (I never elected to have such seats). Just plain manipulation and false advertisment. Very disappointed overall about this airline.

The trip was great until my luggage was lost on transfer from United to Swiss. It took Swiss 3 days to get my luggage to me though it was located almost immediately.

It was much better than most airlines we have flown with. It remo des me Swiss Air 25 years ago.

Horrible!! The WiFi was not working, the food was awful

We’ve never been more uncomfortable on a flight than we have on this particular one. The seats in front of us reclined so far back that when the person reclined their seat of broccoli, it almost hit me in the face and left me with literally no room to move that said I had to recline my seed in which made the person behind me upset. It seemed like the seats also would recline without even pressing the button in the armrest and would unrecline as well for that same reason, and it also seemed that some seats reclined more than others. The bottom cushions of the seat were so thin that even after one hour of an 11 hour flight, our tailbones were so sore. It seemed like an overall old airplane. It also didn’t have individual air vents and it was extremely hot the entire flight. Several passengers were commenting on how hot it was. The breakfast was some kind of flavorless triangle, puffy egg, laying in a watery bed of steamed peppers and onions and spinach. It was not appetizing at all. The flight crew was extremely nice so that was a nice thing this flight attendant. They let us try different types of Swiss sodas, which was really nice and the dinner was actually delicious but still overall given the other considerations. It was pretty much a miserable flight without basic seat comfort.

Food used to be better and comfort was not attainable after 5 hours everything starts hurting.

Horrible flight. First delay in boarding of approximately 30 minutes. While in the plane, the flight attendants huddle and we get an announcement that the crew's legal time was exceeded, that they don't have replacement crew and that they will need to cancel the flight. One would think that they would know that their time was to be exceeded BEFORE boarding. Took for ever to deplane. Then we were told that flight would not be cancelled but gave us a departure time of 21.15, which of course was not fulfilled. Arrived in Valencia, luggage took 30 minutes to arrive. Absolutely unacceptable

horrible.. they cause such a problem and my daughter 14 years old was stranded in san francisco

I can’t even the whole trip was a catastrophe

After arriving in Istanbul, the transit information on the electronic board showed a tight departure time, and the gate changed in the middle, making it difficult to make it on time.

Typically good service onboard but baggage delay in airport was significant

My, Syed Zawar Hussein Shirazi frequently flyer membership number was not included on my boarding pass from O’Hare to Istanbul despite my reminder to the attendant at check in. Further she forgot to give me my boarding pass form Istanbul to Lahore and she needs to improve her customer service, please 🙏

Everything about that day was great I was happy with how things went as a first time traveling with the airline thank you for all that you’ve doing by taking us there to our various destinations thanks.

They oversold the tickets by one which was my ticket so I didn’t have a ticket till last second

Not good. I was supposed to be in Mint but got in economy class

Service was slow and checked bag was off last evening when flying business

Turkish Airline canceled our tickets in the very last minute, with our luggage and everything else, all prepared and good to go. It’s clear that they sold the tickets for better money to someone else. Bad, Bad, Bad business!!!

Awful seating. Bad food. Staff only have one bottle of water and no cans.

it was like a banya -so hot... They did provide a great experience with special food. one toilet broke midflight In general it was a peaceful and relaxing flight - for business class it was good.

I had a good comfortable seat. There was nearly an hour delay. There was an accident with the champagne, but I was well compensated. These things happen sometimes.

Service and food were excellent. Incredibly friendly and competent staff. Flight was delayed over and hour and I had to run between terminals to get my connecting flight.

Missed it by a couple minutes and couldn’t find an alternative flight so had to spend the night in DC and after much shuffling from 1 airline to another managed to get a United to Frankfurt.

There were only 2 toilets and one of them did not work in business class. We are not allowed to cross classes so had to wait in line to use the toilets!! The entertainment touch display was finicky and did not work all the time.

We missed our flight. There was not enough time built into the layover to get through immigration, customs, bagclaim, bag rechecking, and the long trip to another terminal and gate. Kayak really screwed up. We took the bus up to Wisconsin and then were picked up in Brookfield by private car. It was lucky we didnt miss the last bus out.

I tried both on line and by calling the Customer Service line to arrange for a special meal as i have food intolerances. I was under the impression from your service representative that I was successful. I was not. I cannot eat spicy foods and get very ill if i eat bell peppers. I could not eat either menu choice and no special meal was actually ordered. ( your representative tried to order it for a flight that did not have meal service!!! - found this out later). Your wonderful cabin crew managed to put together a fruit, salad, roll and cheese tray for me so I had something to eat. WHY WOULD YOU SERVE SPICY FOOD, WITH NO MILDER OPTION,ON AN INTERNATIONAL FLIGHT???

Crew was professional and great, flight was clean. However food was pathetic. I ordered a Hindu meal assuming no meat but they served chicken. Need to be very specific- Hindu meal should be categorize as Vegetarian - no meat or egg. Or it should be specific that we are serving meat.

Late flight Delays Poor service Poor staff Worst airline ever

Ground staff and cabin crew were excellent. Flight was perfectly on time. Zero issues.

Even after a delay, getting off the ground, thanks for keeping me safe, the airline made certain that my connecting flight was rebooked to get me to my final destination. It was actually rebooked twice, and my luggage still managed to meet me. The airline gave me a credit for food and beverage to be used at the airport vendors, regretfully, the credit did not transfer to my final boarding pass. Oh, well…

Everything you need to know for your flight from Boston to Ljubljana

Information on your arrival and departure airports