Find flights
Deals
Insights
When to book
FAQs & Tips
Airlines

DEN - LJU

$324 Find cheap flights from Denver 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 Denver to Ljubljana departing on 9/28. 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
0 bags
Mon 6/3
Mon 6/10

Search 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 Denver 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 Denver to Ljubljana, as well as popular online travel agencies
In the last 7 days travelers have searched 43,693,958 times on KAYAK, and here is why:

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

Cheap flight deals from Denver to Ljubljana (DEN-LJU)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Denver 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 and deals for you by selecting your travel dates.
Choose your dates
4:05 pm - 12:25 pmDEN-LJU
12h 20m1 stop
10:40 am - 4:05 pmLJU-DEN
13h 25m1 stop
$784Lufthansa
Find Deal
Sun, Sep 15 - Tue, Dec 24
4:05 pm - 12:25 pmDEN-LJU
12h 20m1 stop
1:05 pm - 2:40 pmLJU-DEN
33h 35m1 stop
$786Lufthansa
Find Deal
Sun, Sep 15 - Mon, Dec 23
5:45 pm - 3:05 pmDEN-LJU
13h 20m1 stop
12:10 pm - 5:33 pmLJU-DEN
37h 23m2 stops
$810Delta
Find Deal
Mon, Sep 16 - Mon, Dec 23
9:00 am - 3:05 pmDEN-LJU
22h 05m2 stops
12:10 pm - 5:06 pmLJU-DEN
36h 56m2 stops
$815Delta
Find Deal
Wed, Sep 11 - Mon, Dec 23
7:45 am - 9:55 amDEN-LJU
18h 10m2 stops
10:40 am - 10:04 amLJU-DEN
31h 24m2 stops
Thu, Sep 12 - Tue, Dec 24
8:20 pm - 7:05 pmDEN-LJU
14h 45m1 stop
1:05 pm - 2:40 pmLJU-DEN
33h 35m1 stop
Sat, Sep 14 - Sun, Dec 22
5:50 pm - 9:55 amDEN-LJU
32h 05m1 stop
3:15 pm - 4:20 pmLJU-DEN
33h 05m1 stop
$896SWISS
Find Deal
Fri, Sep 13 - Thu, Sep 19
5:55 pm - 6:30 pmDEN-LJU
16h 35m1 stop
10:40 am - 9:57 pmLJU-DEN
19h 17m2 stops
$921SWISS
Find Deal
Mon, Sep 16 - Tue, Oct 1
12:20 pm - 3:05 pmDEN-LJU
18h 45m2 stops
9:00 am - 10:49 pmLJU-DEN
21h 49m2 stops
$936KLM
Find Deal
Wed, Sep 18 - Fri, Sep 27
5:45 pm - 3:05 pmDEN-LJU
13h 20m1 stop
9:10 am - 10:55 pmLJU-DEN
21h 45m2 stops
$1,102KLM
Find Deal
Sun, Sep 15 - Sun, Sep 22

Flights from Denver to Ljubljana - Travel Insights & Trends

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

What’s the cheapest day of the week to fly from Denver to Ljubljana?

The average price of all flights from Denver to Ljubljana clicked on KAYAK for each day over the last 12 months.
Your flight ticket price will generally be cheaper if you fly to Ljubljana on a Tuesday and more expensive on a Sunday. On your return trip to Denver, you should consider flying back on a Tuesday, and avoid Sundays for better deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Denver 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 Denver to Ljubljana is January, where tickets cost $600 on average. On the other hand, the most expensive months are May and July, where the average cost of tickets is $1,590 and $1,582 respectively.

Which airlines provide the cheapest flights from Denver to Ljubljana?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the past 3 days, the cheapest one-way tickets to Ljubljana from Denver were found on British Airways ($662) and SWISS ($775), and the lowest round-trip tickets were found on Lufthansa ($784) and Delta ($810).

Good to know

Low season

February

High season

September

Cheapest flight

$324
Best time to beat the crowds with an average 34% drop in price.
Most popular time to fly with an average 4% increase in price.
Flight from Denver to Ljubljana

When to book flights from Denver to Ljubljana

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

  • What is the cheapest flight from Denver to Ljubljana?

    In the last 3 days, the lowest price for a flight from Denver to Ljubljana was $324 for a one-way ticket and $784 for a round-trip.

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

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

  • Which airports will I be using when flying from Denver to Ljubljana?

    When flying out of Denver you will be using Denver Intl. You will be landing at Ljubljana, also known as Ljubljana Joze Pucnik.

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

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

  • Which airline alliances offer flights from Denver to Ljubljana?

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

  • Which is the best airline for flights from Denver to Ljubljana, SWISS or Lufthansa?

    The two airlines most popular with KAYAK users for flights from Denver to Ljubljana are SWISS and Lufthansa. With an average price for the route of $1,282 and an overall rating of 7.8, SWISS is the most popular choice. Lufthansa is also a great choice for the route, with an average price of $1,263 and an overall rating of 7.0.

  • How does KAYAK find such low prices on flights from Denver 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 Denver to Ljubljana.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ljubljana from Denver 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 Denver 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 Denver with another airline. Booking your flights between Denver 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 Denver 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 Denver 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 Denver to Ljubljana

 
See real verified KAYAK customer reviews for airlines flying from Denver 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 Denver 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.
7.8
SWISSOverall score based on 2025 reviews
8.4Crew
7.2Entertainment
7.9Boarding
7.4Food
7.6Comfort
Airline reviews

Horrible experience. They "GAME" with seats they decided to play where you can`t select or get seat during check-in without paying and then forcing you to stay long line at the Customer Service at the gate to get a boarding ticket with seat assigned is pathetic. Will never fly with United again!

2.0 MediocreAnonymous, Apr 2024DEN - ORD
Read more about SWISS reviews

Horrible experience. They "GAME" with seats they decided to play where you can`t select or get seat during check-in without paying and then forcing you to stay long line at the Customer Service at the gate to get a boarding ticket with seat assigned is pathetic. Will never fly with United again!

So terrible. They would not rebook me for a flight until 2 days. I had to spend so much money to get my own flight. They were rude and not helpful.

Overall a good experience, the flight was on time, the crew very attentive and friendly. However the seats are too cramped, there is no space, and as soon as the person in front reclines the seat, it's literally in your face.

Bag lost. Lost bag recovery process is an unsatisfying customer experience. Because 1) bag is still lost but also 2) the process is outdated and form-heavy and 3) in our case also involved a long line.

We were very impressed with Swiss Air. The service was exceptional. Unfortunately, we had a baby behind us that screamed for hours. , It was a nightmare, though I completely understand that it was not Swiss Airs fault.

We had to move to terminal 5 for the next part of our trip. Very un-organized and difficult.

Missed connecting train since flight was late into Zurich and I had to stay at airport hotel because of it as well as I had to repurchase train ticket

Cons: "Flight was completely full and certain passengers were belligerent about wearing face masks. The cabin crew did not enforce mask wearing, stating “we are not the police”"
Pros: "Nothing. There was no flight. The flight was cancelled and you did not notify us. We found it out ourselves by accident. We tried to contact you guys but we could not call or anything other. You guys suck"
Cons: "Notify your customers when the flight is cancelled. Thats the least you can do. Very unprofessional"
Cons: "I fell sick and my doctor advised against flying. Tried calling Swiss Air and JustFly.com: 6 calls back and forth and 7 hours on hold, no help. Finally got advised on driving to the airport to make the flight change at the Swiss Air counter at O’Hare. The representative told me to bring a note from doctor to switch flights. I did the next day. The same representative looked me in the eye after advising the day before and said there’s nothing she could do. Why make an elderly sick person drive to the airport again if you know already you cannot help??Absolutely terrible experience, no help from the airline or travel agency. Total loss of the full price of the ticket."

They charge me for luggage which is was included on the ticket

Business class in the second leg - CDG-EVN was a disaster.

worst experience ever i choose my seat in advance and also have my seat selected in my boarding and the they told me that my seat has been changed without notify me

Food could have been better especially the breakfast. Overall it was a good flight

I have used Air France and KLM many times it will help if they change their menu's feel like it's been the same for years!!!, Especially the breakfast. Overall the flight was good and enjoyable.

No birding was given for next trip on same carrier, food was very moderate.

We transited through Chad and what was supposed to be a 1hr 20 minutes transit time lasted over 4hrs. We didn't get regular updates until we complained. After a 10hr flight from Paris no form of refreshment given and finally arrived Abuja over 6hrs later and none of my bags came

The line at boarding was not well organized and managed

A couple of minor delays in boarding but very professional and efficient staff.

Sky priority means you get to use the KLM business Lounge.

German crew were very kind. Food was okay but can be better, especially bread was not good, Garbage collection was very poor.

Awful Terrible staff poor communication Flight delayed for an hour with no apology or explanation and no help re missing connecting flight. Resulted in a 7 hour layover at Munich waiting for another connecting flight. Only 15 euros refreshment voucher given. Will not fly Lufthansa again

Both flights were late for what appeared to be the airline’s not having the planes ready. Arrived over 6 hours late.

It was a busy flight and all the crew were very helpful and gracious

Seats were not the most comfortable and food options weren’t great but overall but everything else was excellent

Check-in very easy and smooth. Plane and crew were nice. Seat open next to me created more space. Food was fair but plentiful. Lots of movies and I was able to sleep some on the way to Munich. Very tight connection, about an hour. Fast through passport control and a bit of a walk to last G terminal gate but I made my connection to Palma. Unfortunately, my luggage did not make it. It is now almost 24 hours since I anded and still NO luggage. I know it landed last night on another flight. Local delivery should be today to my hotel in Palma but nothing yet. I asked about the tight connection when I checked in and was assured they would get my luggage to the connecting flight. Very disappointing it missed my flight but more disappointing that it has taken so long to arrive. Failure on the airlines and service to get my luggage to date.

I wish the flight attendant was a little bit kinder

The food wasn’t great and it would be nice if the airlines showed documentaries about the countries we are flying into.

Disappointed everytime. The app doesn't load the boarding passes. They have lots of agent that seem to be busy doing nothing with a long line waiting to get paper boarding passes. Food choices are poor. Entertainment is less than entertaining.

Horrible experience. Nothing to give to kids to keep them entertained.

Book cheap flights from Denver to Ljubljana

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Denver to Ljubljana found on KAYAK in the last 72 hours.
9/28Sat
2 stops
54h 34mDEN-LJU
$324
9/28Sat
3 stops
30h 14mDEN-LJU
$348
9/28Sat
1 stopBritish Airways
35h 50mDEN-LJU
$662
7/22Mon
1 stopSWISS
16h 35mDEN-LJU
$775
7/21Sun
1 stopTurkish Airlines
28h 20mDEN-LJU
$777
8/17Sat
1 stopBritish Airways
18h 05mDEN-LJU
$824
6/23Sun
1 stopSWISS
32h 00mDEN-LJU
$1,045
6/23Sun
2 stopsLufthansa
22h 05mDEN-LJU
$1,093
6/22Sat
1 stopLufthansa
12h 20mDEN-LJU
$1,147
10/1Tue
1 stopTurkish Airlines
15h 35mDEN-LJU
$3,248

Search by stops

Search by airline

Search by price

Denver - Ljubljana Flights

Departure:

Denver (DEN)United States

Destination:

Ljubljana (LJU)Slovenia

Cabin classes:

Browse destinations: