$422 Find Cheap Flights from Denver 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 Denver to Slovenia departing on 9/14. 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

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Cheap Flights from Denver to Slovenia

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Ljubljana
Ljubljana1 stop$803
Ljubljana
Ljubljana1 stop$803

Book Cheap Denver to Slovenia Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Denver 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.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Denver to Slovenia

Thu, Oct 23 - Tue, Nov 4
Turkish Airlines Logo
7:50 pm - 7:15 pmDEN-LJU
15h 25m1 stop
Turkish Airlines Logo
9:20 am - 5:35 pmLJU-DEN
16h 15m1 stop
$803Turkish Airlines
Find Deal
Mon, Jan 5 - Thu, Jan 15
Lufthansa Logo
4:20 pm - 12:40 pmDEN-LJU
12h 20m1 stop
Lufthansa Logo
6:35 am - 11:50 pmLJU-DEN
25h 15m2 stops
$894Lufthansa
Find Deal
Mon, Jan 5 - Thu, Jan 15
Lufthansa Logo
4:20 pm - 12:40 pmDEN-LJU
12h 20m1 stop
Lufthansa Logo
8:10 pm - 2:35 pmLJU-DEN
26h 25m1 stop
$896Lufthansa
Find Deal
Mon, Jan 5 - Thu, Jan 15
 Logo
11:15 am - 2:05 pmDEN-LJU
42h 50m2 stops
 Logo
6:35 am - 12:37 pmLJU-DEN
38h 02m2 stops
Thu, Oct 23 - Tue, Nov 4
Lufthansa Logo
4:15 pm - 7:25 pmDEN-LJU
19h 10m2 stops
Lufthansa Logo
6:35 am - 4:00 pmLJU-DEN
17h 25m1 stop
$933Lufthansa
Find Deal
Thu, Oct 23 - Tue, Nov 4
Lufthansa Logo
4:15 pm - 7:25 pmDEN-LJU
19h 10m2 stops
Lufthansa Logo
6:35 am - 7:29 pmLJU-DEN
20h 54m2 stops
$944Lufthansa
Find Deal
Sat, Oct 11 - Sat, Oct 18
British Airways Logo
2:48 pm - 2:15 pmDEN-LJU
39h 27m2 stops
British Airways Logo
11:00 am - 8:27 pmLJU-DEN
41h 27m2 stops
$1,039British Airways
Find Deal
Sat, Oct 11 - Sat, Oct 18
Lufthansa Logo
5:58 pm - 1:20 pmDEN-LJU
35h 22m2 stops
Lufthansa Logo
8:00 pm - 1:45 pmLJU-DEN
25h 45m1 stop
$1,119Lufthansa
Find Deal
Sat, Sep 20 - Tue, Sep 30
 Logo
6:55 pm - 9:40 amDEN-LJU
54h 45m2 stops
 Logo
9:25 am - 5:55 pmLJU-DEN
16h 30m1 stop
$1,123
Find Deal
Sat, Oct 11 - Sat, Oct 18
Turkish Airlines Logo
7:50 pm - 7:15 pmDEN-LJU
15h 25m1 stop
Turkish Airlines Logo
9:25 am - 5:55 pmLJU-DEN
16h 30m1 stop
$1,130Turkish Airlines
Find Deal
Booking Insights

KAYAK's insights & trends for Denver to Slovenia flights

Get data-powered insights and trends into flights from Denver to Slovenia 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 Slovenia?

The average price of all round-trip flights from Denver to Slovenia clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Slovenia on a Thursday and more expensive on a Saturday. On your return trip to Denver, you should consider flying back on a Friday, and avoid Wednesdays for better deals.

Good to know

Low seasonApril
Cheapest flight$422
Best time to beat the crowds with an average 49% drop in price.
Most popular time to fly and prices are also 25% lower on average.
Flight from Denver to Ljubljana

FAQs - booking Slovenia flights

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

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Denver 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 Denver 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 Denver 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 Denver 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 Denver to Slovenia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

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

    The cheapest time of day to fly to Slovenia is generally at night, when round-trip flights cost $1,033 on average. Morning departures are around 178% more expensive than evening flights, on average. The most expensive time of day to fly to Slovenia is generally in the morning, which is peak travel time and where the average cost of a ticket is $3,302.

Reviews of the top airlines flying from Denver to Slovenia

 
Need help choosing which airline to fly with from Denver 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.
7.3
Turkish AirlinesOverall score based on 3949 reviews
7.7Crew
7.4Food
7.3Comfort
7.4Entertainment
7.3Boarding
Airline reviews

The crew were very hospitable and pleasant. The food was pretty good. Unfortunately, there was a flight delay of more than 2 hours. We're not sure why but it appeared to be outside the control of Turkish Airlines.

8.0 ExcellentRadwan, Aug 2025LAX - IST
Read more Turkish Airlines reviews

The crew were very hospitable and pleasant. The food was pretty good. Unfortunately, there was a flight delay of more than 2 hours. We're not sure why but it appeared to be outside the control of Turkish Airlines.

Bough tickets with luggage, but made me pay at Airport as well

The economy seat was so uncomfortable, had not enough leg room for 13 hours flight, front seat basket was broken and couldn’t hold anything, food quality was horrible( we got food poisoned ) we charged for logged which used to be free. We paid too much for this flight and very disappointed. Turkish air line better to make satisfy and respect people instead of find different way to scam people.

This is really the rating of two flights. JFK to IST then IST to NQZ. New York to Istanbul was good. Good crew and all positives. The flight to Astana was so bad that brought it all down. Crew was nonexistent above the minimum, seats were cramped, and it was hot on the plane. Turkish Airlines seems to be slipping down to US based carriers level.

The 2 agents on the check in counter were super nice , helpful and very polite. Boarding was like a 1 2 3, I would recommend Turkish airlines for your next trip.

Everything was very good, except that the plane was an hour and a half late

flight with heavy turbulence old boeing 777 rest wasnt clean dashboard doesn’t work

Light and recline did not work on my seat. Very uncomfortable and could not read in the dark

Bad experience; they are not good anymore. They charge too much for luggage seat are so uncomfortable, Flight delays which may miss your next flight, they don’t care if you miss the flight or not. Zero customer services for front desk representatives Istanbul's airport I’m not using this airline any more.

I’ve been traveling for 20 years. I tried Turkish airline for the first time horrible horrible service and it would be my last time even if I get offer for a free ticket, I will not accept it. They have races and the worst Flight attendant

The male attendant has zero personality. It seemed like he was over worked or hated his job, not once did he smile or made any contact with the people on the plane. Strictly business and call it a day!

Booked Economy but it translated to economy light for Lufthansa so now we are stuck paying an extra $75 per person both ways for our checked bags. If I had known that, I would have never booked these tickets because it came out to be more than other options. The booking in the kayak side clearly says Economy and has a link to the inormation for Lufthansa which states Economy included a checked bag. Super annoyed about that.

The flight from Dulles to Munich was just okay. The seats were comfortable and extra foot room was noticeable in comfort plus. Disappointed in the booking in so much I requested an aisle seat and then was assigned a middle seat. The food was inedible. Movie choices were moderate. I usually fly Delta, but this WA flight was cheaper. Next time, I'll happily pay the extra to fly Delta.

Flight was late arriving. So, we left 25 min late. Pilot made some time up during the flight. Therefore, we arrived alittle past original time.

Food is too little (in volume) and too spicy.. There are no snacks in the back of the plane in between meals.

The seat I was stuck in was so unimaginably uncomfortable. I have never had that tight of a seat in my 20 years of flying. Even budget airlines give you more space.

We were upgraded to economy plus and everything was awesome!

I liked the crews attentiveness, all food and drink items were tasty, and came out in a timely manner. The entertainment systems were not as responsive and my seat had issues with the auxiliary for the headphones. Seats were OK, and the headrest for my seat could go back only so far. Bathrooms were tight fit.

Our flight was delayed for over an hour due to weather, and it had already been a long travel day. However, the crew was calm and compassionate, listening to every complaint with genuine concern. They got us home safely without incident, in spite of all of the obstacles. I’m grateful.

Hate their old flights, boatding, food and services. Very poor quality

Everything you need to know for your flight from Denver to Slovenia

Information on your arrival and departure airports

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