Find cheap flights from Denver to Slovenia

Find cheap flights from Denver to Slovenia

Search hundreds of travel sites at once for deals on flights to Slovenia

Round-trip
Economy
Denver (DEN)
Slovenia
Fri 6/11
Fri 6/18
Any month
Compare vs. KAYAK |
There are travel restrictions to Slovenia. Learn more
Stay informed and receive email updates for when travel restrictions ease for Slovenia.

Good to know

Low season

AprilBest time to beat the crowds with an average 4% drop in price.

High season

DecemberMost popular time to fly with an average 28% increase in price.

Average price round-trip

$764(avg. price over the last 2 weeks)

Good deal round-trip

$625or less

Good deal one-way

$463or less

Top tips for finding cheap flights to Slovenia

  • Book at least 3 weeks before departure in order to get a below-average price.
  • High season is considered to be May, June and July. The cheapest month to fly to Slovenia is March.
  • Morning departure is around 8% cheaper than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs - booking Slovenia flights

How long is the flight to Slovenia from Denver?

What is the cheapest flight to Slovenia from Denver?

Are there Slovenia travel restrictions currently due to Coronavirus?

How does KAYAK find such low prices on flights 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?

What is the Hacker Fare option on flights to Slovenia?

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

Top 4 airlines serving Denver Intl to Slovenia

Scores according to KAYAK customer reviews

8.0
SWISS
Overall score based on 9,001 reviews
8.2
Boarding
7.8
Comfort
8.6
Crew
7.7
Entertainment
7.9
Food
Airline reviews

Pros: "The crew was very nice."
Cons: "The seats had such little cushion that it made the flight extremely uncomfortable."

Pros: "The crew were very good. Seats were small."

Pros: "The crew service was very good, as was the food. The only complain is about the entertainment, hope to update the touch screen."

Pros: "Crew was very friendly. Seat a pretty comfortable."

Cons: "They charged about $230 to convey my skis, compared to about $80 for the first bag. This is such ab unexpectedly big difference as to be a trap. Swiss Air are, in my opinion, con artists. Do not fly with them."

Cons: "Same reason as above."

Pros: "Cabin cleanliness isgood"
Cons: "Food is bad"

Pros: "Flight was very smooth and on schedule."
Cons: "Seating in economy was very cramped (pitch felt like 77”) and food and entertainment nothing special. Somehow I had higher expectations for comfort and service, even in economy."

Pros: "Nothing, flight was cancelled after I electronically checked in"
Cons: "Flight was cancelled"

Pros: "Flight attendants were very understanding."
Cons: "I requested a basinet for my infant daughter and I paid a total of $98.93 extra, but on the plane they told me they didn't know anything about that and they didn't have any basinet. I called Swiss as soon as I landed, and I've told my request was sent but it was never confirmed. They also told me they will send me an email when the basinet for the return flight is confirmed. At this point, I'm not even sure what I paid the $98.93 for."

Pros: "The crew were personable and the chocolate that was offered near the end of the flight was a nice touch."
Cons: "Cramped, cramped, cramped!!!!! The seat pitch was just so uncomfortably short so much so that when the person in front of me reclined his seat, the TV screen was a mere 1-2 feet away from my face making it impossible to watch anything without getting crossed eyed or a headache. This unfortunate situation has influenced this review greatly particularly because this wasn’t a 2 hour flight but a long haul one."

Pros: "The business class ground crew proposed to check in our hand baggage and were very helpful. (We were in economy class) It was my birthday and i was very touched to receive a spontaneously made card and some chocolate truffles and a smile from the flight crew."
Cons: "I think the choice of films could be improved."

Pros: "We were pleasantly surprised at how good the food was! An added bonus was the chocolate they gave us. Crew was professional and courteous."

Cons: "2.5 hour delay, missed connection, arrived more than 5 hours after originally planned. Entertainment system did not function. Crew did not collect garbage/unused items prior to landing and I was holding garbage in my hands during landing (and some spilled on my lap)."

Pros: "Good seats for my wife and i: window and aisle seat"
Cons: "Only glass of water free...coffee is 3.50"

Cons: "Worst travel experience ever and I’ve traveled the world. Red eye flight delayed for 3 hours. Missed connection flight with not a lot of options. Waited for another 3 hours to get rebooked and have to stay at Zurich overnight and only to find our checked luggage is no where to be seen. First and LAST time we fly Swiss Air!!!"

Pros: "Good breakfast"
Cons: "Bad seat, just an economy seat"

Pros: "Food"

Pros: "Excellent food. Lovely service. Departure and boarding on time."
Cons: "No entertainment at all. Very limited leg room"

Pros: "Quick and easy- no problems. We had drink service and a yummy croissant. Flights attendants were really nice and spoke great English."

Pros: "Crew was nice."
Cons: "Cabin is old and needs updating. For the cost of the ticket, I expected better entertainment, more room, and better food."

Pros: "Crew was good. Very polite. The plane was old. No place to charge your phone. The in flight screen required the use of a remote which was inconvenient when having to wake up my neighbor to pull it out of the armrest. Food wasn’t great. Skipped the last meal service. It was like flying 20 years ago. Not bad, but not as good as it could be nowadays."

Pros: "nice chocolate."
Cons: "The tv screen for my seat was semi-broken, and the UI for it was poorly designed or just old. Lufthansa was much better."

Cons: "No seat entertainment."

Pros: "Swiss is already a great company and yesterday it just got better : I got upgraded on business class between Geneva and New York and it was a very nice treat, the service was perfect, the food excellent, the seat was very comfortable. Thank you SWISS !"

Cons: "On ticket it said time between flights was 1hr 25min, but as soon as we got off the plane we had to RUN through Zurich airport, where 1000 other people were all trying to funnel down the single escalator to Passport Control, to get to our gate. Then we had to wait in another Passport Control. TERRIBLE and stressful. The actual flight was fine."

Cons: "There was no wifi available, the airline did not have a record of my request for a vegan meal even though I submitted one when I booked my tickets, and they claimed I did not pay for/reserve a seat (even though I had for the flight over, which I booked at the same time as the return flight), so I was stuck in a cramped middle seat for 8 hours trying to write a paper without the internet."

Cons: "Customer services fly attendece great services"

Pros: "The crew made the right call after the Swiss computers shutted down"
Cons: "Boarding problem. But I have to congratulate the crew for their efforts to overcome the problem in the best possible way"

Pros: "Food and service were good"
Cons: "Seats were terrible - way too small, too tight. No room for underseat placement of a backpack and feet. Sardine packing of economy passengers!"

Pros: "Same as above!"

Pros: "Very accommodating"

Pros: "Friendly crew, decent meal, and above-average entertainment systems"
Cons: "Confusing boarding process, outdated and worn seats and technology, unable to select seats when booked as a United codeshare."

Pros: "I liked the comfort of the aircraft and entertainment"
Cons: "That there was a delay which wasnt announced which meant i had to get through an new airport in a hurry for me to get connecting dublin flight. When i got to boarding gate everyone was boarding found this extetemly pressuring"

Pros: "Both the food and service were fantastic. A great choice of mid flight entertainment"

Cons: "Never happened because I was rerouted through Istanbul. And for anyone checking Istanbul is 3 hours in the wrong direction to my ultimate destination."

Pros: "The food"

Pros: "efficient boarding ang pre- boarding"
Cons: "these planes are not meant for people above 180 cm. On transcontinental flights it is absolutely unacceptable"

Pros: "The crew was excellent. The food was pretty good and service was frequent even in economy."
Cons: "The seats are too close to each other. The couple in front of use reclined the entire flight and they were nearly in our laps. We could not get in and out of our seats to stretch. The flight attendant needed to ask them to sit up during meals so that we could eat."

Pros: "the Crew, the meal, the seat at the window"
Cons: "the late and the not very good Information about the late in Madrid"

Pros: "The flights were Just as schedule, the arrival time was even earlier than planned. The crew is always available and tries to make the flight as comfortable as it can be. The food is brilliant in comparison to other airlines. To sum up, always a good choice. * this is my 8th flight with Swiss."
Cons: "Nothing."

Pros: "As a frequent traveler, SWISS hadthe best airline food I've ever tasted. Very efficient in everyhing they do. Great service and the crew was very friendly. Unfortunately, I had a seat that was in between the two in front of it, so my TV was at an angle, but only a minor inconvenience"

Pros: "Loved the food and wine. Very comfortable flight and the staff was wonderful"

Pros: "Great flight crew, on time performance"
Cons: "Seats could be more comfortable"

Pros: "The staff were very attentive, there was a free meal - a nice quality (fresh) panini with chicken ant then they came around with beautiful swiss chocolates. best experience on a short flight."
Cons: "nothing!"

Pros: "All but the service"
Cons: "Flight attendants seem confused. Service was below par. Took forever to clean food service. Business class had the lights off after dinner at least 40 minutes before we did in Economy. Couldn't get water I requested for a long time."

Cons: "excellent food and hospitality"

Pros: "Everything! Great Flight attendants, good food. Drinks in economy class. First class treatment in economy. Plenty of entertainment options. We were fortunate to have a very clear air on our transatlantic flight. They did not turn on the seatbelt sign except to land."

Cons: "Lights were on too long for an overnight flight"

Cons: "A quick drink service would have been nice, it was provided on the same flight going the opposite direction"

Cons: "100% as always.. delta has never disappointed! Keep up the good work guys"

Pros: "The crews were super accommodating and my seat was so comfortable I actually feel asleep which is something I have never done on a plane before."
Cons: "Load the plane from back to front. It makes sense as people leave the plane from front to back"

Pros: "Good"

Pros: "Availability of WiFi, a charging port and media options puts Delta a step (or two) ahead of their competitors. The professionalism of the crew, as well as the complimentary food/beverage options are also excellent."
Cons: "Not the airlines fault, but my 6’4” frame doesn’t fit very well in a middle main cabin seat."

Pros: "In flight entertainment"
Cons: "Food provided, other than snacks, would be a plus"

Pros: "We arrived eventually."
Cons: "Flight delayed three hours. Payed extra for an earlier flight. Very disappointing."

Cons: "Delayed 4 hours"

Pros: "Crew."
Cons: "Getting to Venice on time. Our late arrival cost me a 90 euro shutle."

Pros: "Comfort + was nice."
Cons: "Had a middle seat between two other men. I was given my seat by the gate. It would have been nice if they placed my more strategically. That might be asking too much but seems reasonable."

Cons: "Choice of healthier snack"

Pros: "Nothing spectacular."
Cons: "The headrests won’t stay up. And it’s hot."

Cons: "Have rhe right to carry at least one luggage per person at no cost. Besides carry on and personal item. Tickets prices and luggage costs are extremely expensive."

Cons: "Seats are so small. Flight was delayed."

Pros: "Staff from Check in to aircraft very pleasant. Snack choice in Coach impressive."

Cons: "Denver airport is far too large for there to be such a small security check therefore it took forever and I missed the flight. Delta tried to charge me $1000 for another ticket to Albany and I decided to fly with another airline for half the price instead"

Pros: "Nothing"
Cons: "I bought a ticket thinking i bought it through kayak but I actually bought a ticket through a third party in India. Where no one spoke good English. I called the agency to find out if I needed a Visa for my visit to Australia and the told me no. So when I showed up to the airport I didn’t have the right documents and I MISSED MY FLIGHT. Also the wouldn’t just change my flight and charge me the change flight fee. They cancelled my flight entirely and made me buy a whole new ticket!!! Worst flight experience I’ve ever had and this is not my first time flying to Australia or out of country."

Cons: "Had to wait for the crew from another flight before boarding p"

Cons: "The seats were in bad condition, I was surprised as Delta usually has well cared for interior and exterior airplanes."

Pros: "The flight attendants were all helpful and pleasant. The seats were comfortable. We were provided with plenty of liquids."
Cons: "The landing was pretty tough and we took off almost a half hour late."

Pros: "Check in Denver super helpful Gate staff hustled to turn around flight Flight crew excellent"
Cons: "Flight delayed, almost missed international connections"

Pros: "Boarding, friendliness of staff"

Pros: "Everything was easy and smooth."

Pros: "Anything from free WiFi, entertainment, leg room, commentary drinks and snacks. Great service!"

Pros: "The staff was polite and snacks were good (healthy options)."
Cons: "Nothing was terrible, but due to the short flights I assume they don’t worry about having planes with entertainment available."

Pros: "Short flight"
Cons: "In SLC they boarded by row numbers and not zones. Weird..."

Cons: "Engine problems-2 hour delay"

Pros: "The fact that there was a screen for movie selections and a charging port for my phone and the flight attendants were super nice"

Pros: "Good flight crew"
Cons: "Delayed due to mechanical issues. For 3 hours. No offers for free drink or wi fi. When we finally land we were on the runway for half hour."

Pros: "Everyone was fairly friendly"
Cons: "Cramped foot room"

Cons: "Bags never arrived at the listed baggage claim. After 45 min, I saw bags on a different claim station and I notified everyone standing around. BUT, I filed a claim with Delta and was immediately given 2500 miles, as guaranteed!"

Pros: "Nothing!"
Cons: "Everything"

Pros: "Delta is great"

Cons: "Poor Delta DEN counter agent experience. Name on ticket didnt match Delta profile name nor TSA [rofile name. Delta counter agent would do nothing, except blame TSA. Would not check ticket name vs profile name. Happened two consecutive flights. Flight tomorrow morning has no TSA Pre clearance on boarding pass. This will be three consecutive flights. Also seated me next to a person who needed 2 seats to himself. Please never seat me next to a passenger who cannot fit in their own seat. I am switching to SWA."

Pros: "On two of the legs of the trip they notice I was a tall person with long legs and upgraded me to seats with more leg room!! I didn't even ask. Thank you."
Cons: "On the way back there were open seats with extra leg room and I asked the gate attendant if it was possible to switch my seat to one with more room and they said they only could if I paid extra."

Pros: "Crew was nice."
Cons: "The Entertainment sucked. Again I was sitting in comfort class which in theory should buy you more comfort and better entertainment. There was a ton of movies from the 90s and the same movie selection from about 6 months ago when I traveled with them. Also, what is going on, with having to use your own cell phone to watch movies on the plane? Whatever happened to the screens in the backseat of the front seat? I ended up with neck pain from trying to watch a movie on my phone. Delta has become very cheap. It is going into some serious decline."

Pros: "Entertainment system is awesome and similar to what I usually see only on international flights."

Pros: "Most comfortable flight I have taken in some time. Spacious seat, power, good entertaiment, attentive flight crew. On time. Not usually a Delta flier, but times and destination made Delta the choice. Turns out a great choice."

Pros: "What a city.. Unique for hell sure..."
Cons: "Nothing"

Pros: "Crew was the best!"
Cons: "I really dislike the snack boxes. Snacks need to be more like a small sandwich or grapes, cheese and nuts. Not all that packaged stuff."

Pros: "Boarding super excellent! Also: Best landing I've ever experienced! Props to the pilot!!"

Pros: "Newer plane with movies."
Cons: "Airlines pack you on so tight."

Pros: "Excellent crew and comfortable flight"

Pros: "Friendly Staff"
Cons: "Check in was very hectic due to limited staff and getting bumped by the red carpet flyers. Boarding is always a little congested due to the lines. Better snacks please!!"

Pros: "We purchased economy tickets in Delta. With these tickets you don't know where you are sitting until you get to the airport. Well, we lucked out and got the Plus seats! We got free alcoholic drinks, and big plush seats! We left right on time and got there early! Overall a great experience!"
Cons: "Nothing."

Pros: "Great,I loved it!"

Pros: "The moviea"
Cons: "The time of night"

Pros: "I didn't like anything because the fly leat 3 hours"

Pros: "Smooth ride. Delta got everything right from takeoff to landing."

Pros: "Entertainment options"

Pros: "The crew was fun, informed, and very helpful."
Cons: "The seat, the entertainment, the headphone jack, the food."

Cons: "Flight late more than 3-4 hours on Frankfurt. So upset. I will never and ever try with Frankfurt again. I bought shortest way ticket to pay more money but unfortunately flight late about 3-4 hours. Money trap. I would love to have another free flight or I will post the tickets on facebook, Twitter and etc... To make a terrible flight reputation."

Pros: "Seat was comfortable, food was good."
Cons: "The woman seated next to me was the mother of one of the flight attendants. She had terrible body odor that nearly brought me to vomiting—and this was a 10 hour flight. She was also brought all kinds of amenities from the attendants from the 1st class cabin—not really appropriate."

Pros: "More leg room"
Cons: "Leg room and bigger seats"

Cons: "Flight was delayed"

Pros: "Beautiful plane, economy seating more generous than normal, excellent in-seat entertainment (easy to navigate, more options than I've ever seen before). Well done!"

Pros: "I was happy with everything stewardess where very friendly everything went smoth"

Pros: "Great"
Cons: "No problems"

Pros: "Most uncomfortable flight in years. No space. Hard seats, horrible food, had to beg for water. Little service, and not friendly. Overall a horrible flight. At least we made there on time"

Pros: "The crew and amenities are excellent!"
Cons: "Economy space is really tight."

Pros: "Staff was very responsive and quick to disperse food and beverages."
Cons: "I didn't care for the breakfast. The eggs tasted like the chicken and rice from the meal for dinner."

Pros: "Nothing"
Cons: "I have been transatlantic for forty years on various carriers. Without a doubt this was my worst flying experience ever."

Pros: "This flight is usually fully booked but there happened to be an empty seat next to mine which was much appreciated"
Cons: "Nothing"

Pros: "Efficient"
Cons: "Plane was HOT"

Pros: "movie selection"
Cons: "I missed my lufthanza connection"

Cons: "Horrible customer service"

Pros: "everything"

Pros: "Food. Variety of entertainment. Flight had empty seats."
Cons: "Over an hour delay sitting with bad air quality. At least it was only 20 minutes late so I didn't miss my connecting flight."

Pros: "Great service. everything was on time, or early. overall pleasant experience."

Pros: "Great service!"
Cons: "Breakfast and movie selection could have been better"

Pros: "Visa for India was not checked in Denver. Landed in Frankfurt and discovered that the visa was expired. Stuck in Frankfurt for 3 nights until new visa was issued. No babes the entire time I was in Germany. Arrived in Mumbai after paying the $350 US change fee and no bags. Bags finally arrived on Monday at 9AM Without clothes, toiletries and medications for 6 nights. Now I am delayed and will probably have to pay rebuke and fare change to extend my stay here."

Pros: "Slept like a baby with no interruptions."

Pros: "1 hor 30 minutes instead of 2 hours 15"
Cons: "Worst food ever, and zero entertainment"

Cons: "Limited choice of types of meal - no vegetarian option."

Pros: "The crew was very friendly and polite. The airplane was clean. The boarding was quick and easy. The entertainment was varied and enjoyable."
Cons: "It wasn't an issue on my flight since there were empty seats in my row, but I don't enjoy the spacing provided for personal items on the floor under the seat in front you. For four seats there are three sections; so, you can hope that someone doesn't need any space or else you have to decide how to awkwardly split it up."

Pros: "very professional cabin crew"
Cons: "The overhead bins are way too small, and they ran out of the vegetarian dinner option. There are no longer air controls for each seat, and the plane was quite cold."

Pros: "See above"
Cons: "See above"

Pros: "The best in-flight service I have ever had on the Lufthansa flight from Denver to Munic!"

Cons: "We were charged a rebooking fee by Lufthansa when customs searched luggage causing us to miss connecting flight"

Pros: "Crew worked very hard to accommodate us."
Cons: "Was seated in a section with many noisy infants. I could not sleep or even hear the entertainment system sometimes. Not the airline's fault. People should know better than to travel with infants. I felt sorry for the crew."

Pros: "Great crew service"

Pros: "Great service, on time departure, excellent amenities"
Cons: "The flight was over before I expected it!"

Pros: "the crew are exellent"

Pros: "Got upgraded to Business Class"

Pros: "Flight was on time comfortable good crew clean and upbeat"
Cons: "Boarding"

Pros: "Lufthansa certainly stands out above ALL American carriers"

Cons: "The crew we had was very impatient and irritated quickly. The flighy attendent name was Jorge. Starting at the beggining of the flight before we took of I asked him about the head phones. One child had one on tye chair and I asked him if its suppose to be on the seat or given later on. He said it will be passed later and then with a patronizing manner he gave another head phone set and said: "I guess we havw an emergency". On the flight, every time he with the food and drinks he just stood there next to me talking over my head with the passenger begind me. Very uncomfortable, especially when it happens 6 or 7 times. When asking what drink we wanted ( the first time), i replied apple and orange juicewith no ice. He replied, with a patronizing manner "this it European company, not American company. Here we don't put ive if you do not ask for it".The incident that bother me the most is one that involved my kids also. My daughter (3 years old) was a bit scared of the flight, tired and did not want to sit on her chair. We tried to keek her on the chair buy she started crying laying down on the floor infront of our seats. Jorge the flight attendant saw her and told me to put her on the seat. Not in a manner I expect out of soneone in the service industry. I told him we are working on it and we will have her on the chair as soon as we can. When I said that he got irritated and a bit aggressive. For no reason the situation became hostile. The flight attendent on the other side (do not know his name). Can over and asked us what we needed amd if we need help. I told the other flight attendant we need 5 minutes and he said OK. After a few minutes she calmed down. Anotger passenger asked Jorge what beer it is and he replied, with contempt, " its German beer, its good"."

Pros: "Good flight good seats smooth ride."
Cons: "Boarding was not organized."

Pros: "United is a good partner to Lufthansa. I like United. It was a quick flight, but a good one."

Pros: "Everything"

Cons: "Couldn't sleep because of seating."

Pros: "No communication"
Cons: "Unhelpful and now luggage has been lost going on 3 days in same clothes"

Pros: "Nice crew"
Cons: "Lack of leg room!!! After my bicycle box was inspected they failed to secure my bike the way I had it in the box. Bike was flipping around in box. Bent rear brake calipers. Bent brake hoods. Rear skewers were uncoupled. No way to treat a $10,000 bike! Very upset!"

Pros: "Pleasant crew."
Cons: "Annoying kids in seats behind us :( Not enough leg room for someone over 6 feet tall."

Pros: "Excellent service from a very friendly staff. Wonderful entertainment options to pass the time on a lengthy flight. Couldn't have been a smoother experience."
Cons: "Nothing at all!"

Pros: "The direction"
Cons: "One flight attendant was rude to me"

Pros: "The food was very good. The service, the preciseness."
Cons: "I didn't like the entertainment, there should me more options for movies in English and Arabic."

Cons: "They cancelled the flight and did not help at all for rescheduling."

Pros: "Smooth and on-time."

Pros: "Flight departed 30 minutes late (due to a delay with the inbound flight)but a short flight time enabled the delay to be recovered and we landed in FRA on time. A very long taxi (30 minutes) made connection time for my next flight to be very tight."
Cons: "Why do LH insist on serving the 2nd meal/beverage service in economy class until 50 minutes before the flight lands? I suspect they would argue it allows passengers to have greater rest however in Y class the passengers are awake long before......could I suggest serving the snack earlier as it prevents a very rushed service as trays are collected and cabin secured very near to the actual landing?"

Pros: "Crew was friendly, food was good"
Cons: "Entertainment was broken in one of our seats, the seats were not comfortable"

Pros: "The seats were comfortable"
Cons: "Everything was ok"

Pros: "Nothing, total stress making us re-check our baggage"
Cons: "British AIrways could have checked our bags through from Denver to Paris....after all it was British Airways to British Airways, but they made us check only to London, retrieve bags carry them to another terminal recheck them for what Simon the BA ticket writer was nothing but pure error by British"

Pros: "I really like this airline"
Cons: "The crew were all very nice"

Pros: "The departures and arrivals were on time."

Cons: "Our flight was delayed causing us to take a red eye, missing our connection,long layover, missed our hotel for the night, thripled our time in transit. The worst travel experience I have had."

Pros: "Easy boarding, on-time departure, clean aircraft, friendly crew, decent food, free drinks."

Pros: "Despite having a delay in Denver, we were able to arrive on time. The crew was very friendly in greeting us as we boarded the plane"
Cons: "The boarding process was hampered by too many people putting too much carry on luggage in the overhead bins. Many put things in the overhead bins that could have been put under the seat. It didn’t seem like the crew was paying too much attention to this. In general the crew was pleasant, but there didn’t appear to be much sincerity in the pleasantries."

Pros: "The crew was very friendly. Lots of movie options. I got a voucher due to the delay."
Cons: "The delay was a bit of a bummer and it would have been nice to be compensated with more than a voucher that couldn't be used in LHR because it was in USD. I also would have liked to been told they were still planning on serving dinner despite the midnight departure; I fell asleep because they turned off the cabin lights and I assumed the meals had shifted, but instead I missed out of my dinner. Lastly, I am quite petite and still struggled with legroom."

Pros: "Crew was friendly and helpful, food was ok."
Cons: "The flight was delayed by roughly 5 hours, causing us to miss our connection and have to wait for the next flight. We missed a half day in Rome and instead spent over 8 hours waiting in airports. The seats were also terribly worn and uncomfortable."

Pros: "Orderly boarding and disembarkation."
Cons: "This airline is one of the worst in Europe, for the simple reason of putting short-term profits ahead of decent treatment of the customer. My flight across the Atlantic was 4 hours late, and BA refused to put me on the next available to Prague, even though the lateness forced me to miss the BA flight I have been booked on. Their reason referred to a technicality in the booking procedure, but actually BA has put in place "policies" aimed at their financial advantage, over and above reasonable treatment of the customer. BA's refusal to rebook me cost me a lot of inconvenience (3 hours on the phone, for one thing) plus about $150 (I am taking another route to Prague); BA was then able to sell both my original seat and an extra seat on the next flight from Heathrow to Prague. I will never fly BA again in my life if I can help it."

Pros: "Food and hospitality and staff"
Cons: "We were late 20 minutes and sat in tarmac another 15 minutes. Didn´t allow us enough time to get train, take bus, we had over 500 people lined up for bus, get through TSA, they pulled my suitcase for inspection, but didn´t look at it for 15 minutes until i called a supervisor as my connecting flight was leaving, and in fact, it had left as TSA does this purposefully and maliciously as it apparently happens all the time per ÇBritish Airways who had to reticket us. We had to return to A section another 20 minutes to be reticketed and luckily got on another flight to

Pros: "On board service and amenities"
Cons: "Kayak customer service"

Pros: "I like to fly BA because the crews ( and I assume the maintenance) are top notch"
Cons: "Tired old 747. Needs an upgrade. Packed in like sardines on an old plane that shows it age. Should have flown Norwegian. Major delay caused me to miss my connections though the BA staff were all over it."

Pros: "I arrived safe and sound"
Cons: "Even though I purchased an exit row seat we were packed in like sardines. I know airlines have to make money but that flight was ridiculous. also, the plane was way too warm for much of the flight. Not sure if there was a problem with the air but for these prices...fix it please."

Pros: "They were extremely accommodating."
Cons: "N/A"

Pros: "it was very clean on a board."
Cons: "even water for money"

Pros: "The seat was comfortable and featured the good headrests."
Cons: "Food was inedible so I left it. The sound on the movies was tinny making hearing difficult."

Pros: "The plane wasn't full, so there was an empty seat in-between my aisle and their window, as well as open spots throughout the plane."
Cons: "Plane was delayed several times. Website wasn't clear about what time to show up to the airport. Food was served late and was mediocre."

Pros: "Excellent food and service."

Cons: "Tight seating altho many open at rear so was able to move there"

Pros: "Treated coach like first class."
Cons: "Nothing"

Pros: "Boarding went fast."
Cons: "Too tight, not possible to sleep a little bit."

Pros: "Nothing"
Cons: "I didn’t like that I paid for first and received terrible service in the air and on the ground"

Pros: "Crew were exceptional in service friendliness and attentiveness."

Pros: "Food was delicious and out flight attendant was very helpful. Plane was quiet and the movie options were good."
Cons: "Plane was honestly very dirty. There was a ton of crumbs and gross stuff in th seat back pocket. Which I did not even use because I didn't want any of my things to touch. The overhead lights were covered in dust. So make sure you have some some type of cleaning wipes with you!! I do understand that I was flying economy, but that doesn't mean nothing should be cleaned."

Pros: "Clean plane"

Pros: "Seats were comfortable and staff was very attentive as well as respectful of us when I was sleeping"
Cons: "There was condensation leaking from the ceiling of the cabin. A crew member said this was normal, would have been nice to know this ahead of time to reassure me that for a first-time overseas flier that this is normal."

Pros: "food was good"
Cons: "IFE was not good the equipment is very old and selection is limited"

Pros: "Cabin crew was friendly and accommodating. Flight was on time and landing was excellent."
Cons: "No complaints"

Pros: " Cons: "I was disappointed in the food. On my second flight that day my ticket said I would get a meal but I didn´t."

Pros: "Service, food, safety video"
Cons: "Delayed flight"

Pros: "Fligth attendants of British, Iberia provided excellent and friendly service. Some of London British Airways desk and gates officcers, gave me really poor service."
Cons: "My flight to London was pretty good,. Service was excellent.. But not my transfer to Madrid , I lost my conecttion. On London airport, I was sent back for the gate because I showed up early and they ask me to take care of the screen and wait for the gate #, when they showed the # , I went to the gate and was told my flight had left an hour ago and sent me back walking . I was wearing an orthopedic shoe, due to a toe fracture and i had to walk again all this long distance back to the terminal.!! British airway gave another flight and had to pay $279 dlls for a ticket to Madrid.2 hrs later. My flight was by Iberia and the service. was excelent. I wonder if the insurance , I bought initially will cover something of the $ 279 dlls ticket ? Fligth back to EUA was by AA and service was excellent"

Cons: "The seats on these flights are poor. As well as being narrow, there are bars on either side that dig in to your sides. My ongoing one hour domestic flight had more comfortable seats. Fod choice poor. Chicken Curry or Cheese/Tomato Lasagna. If I want a vegetarian meal I'll order one beforehand. Give me two meat options. This isn't the first time I've noticed this. Is it cost cutting? Seems like it to me. Not impressed."

Pros: "Very courteous attendants"
Cons: "All good"

Pros: "Very little."
Cons: "Flight was delayed. The seats are uncomfortable and too small for even normal size male. Food was disgusting. Staff were very nice and helpful if asked. I think all the space and comfort were in buisiness and first class. Economy class is still paying for a ticket, make up most of the passengers and deserves better. Getting into a seat was like getting into a straight jacket."

Pros: "The food was better than expected and the crew did everything they could to keep us comfortable"
Cons: "That plane was so gross. The upholstery was stained and frayed. It was also insanely small. Holy cow!"

Cons: "food was not good."

Pros: "Absolutely nothing"
Cons: "Flight was delayed by 2 hours. Then they bumped us out of the seats we had reserved. Made it just in time for our connection. Then they bumped us from that flight. Others were given generous compensation for that bump. However we were given nothing. At least they us we could rest in the BA lounge because I am elderly and disabled and we would have a 9 hour wait. Got to the lounge and we were not listed in the system. So we were denied entrance. We will have have spent 2 nights on a plane and 36 hours instead of one night and 16 hours. Rotten way to depend your 50th anniversary."

Pros: "not much"
Cons: "5.5 hours delay"

Pros: "Just so comfortable and friendly. I'll fly them again next time!"
Cons: "Nothing."

Pros: "I loved the legroom in the emergency seat I had and the service was top notch. The food and food choices was also really nice and the wine served with dinner was great."
Cons: "Overall loved my emergency row seat the only negative for my particular seat was once the rest of my row was filled in and the 2 seats in front of me it made it impossible to get out of the seat and stand up unless I could had the person sitting in front of me get out of his seat."

Pros: "Nothing"
Cons: "Old plane, flight attendants boardering in rude, very poor food (!), de-plane via steps to the tarmac and at least 7 coaches at Heathrow (an aged 747, so it took nearly an hour!)"

Pros: "Everyone was awesome"
Cons: "The staff was awesome"

Pros: "The food was elevated and we were fed twice on our 9 hour flight! The beverage service was also provided often with a good assortment. I loved that there were new release movies available for free. The staff was friendly and available. If I were to do another long flight like that, I would seek out British Airways."
Cons: "Nothing."

Pros: "Wine with dinner."
Cons: "No tv for 9hr flight. Breakfast was awful."

Cons: "We purchased upgrades to an exit row seat because my knee locks up when cooped up for that long. They changed the plane and I understand that happens but they denied our refund request with 7 days deadline to re-request. So now we have to spend valuable vacation time dealing with their incompetency"

Pros: "No turbulence!!!"

Pros: "For economy class it was good seats (bulkhead), the crew were nice, and the food was good."
Cons: "The tiny screens for movies were awful. Worst of all, the horribly loud voices that nearly break eardrums when the crew comes on during the flight was both painful and annoying."

Pros: "Easy and quick boarding. Dinner tasty, but it is hard to cut a fillet steak without hitting the next passenger in the elbow"
Cons: "Only one check-in agent running all desks including bag drop - long wait. 19 year-old 747 had narrow seats in premium economy, uncomfortable and too much body contact with adjacent passengers. Outbound to SFO in an Airbus 380 had sparkling wine pre-take off, hot towels twice, this DEN-LHR flight only had juice or water on offer (crew said "don't serve that on this route") no hot towels, crew's objective seemed to be get around cabin in one go and leave Pax to it Breakfast was abysmal, soft-pretzel roll, no juice or water served, just indifferent coffee"

Read more about SWISS
COVID-19 information

Safety measures for airlines flying from Denver to Slovenia

Airlines flying from Denver to Slovenia have enacted additional safety measures and adjusted policies to better accommodate travelers. Policies vary by airline.

Heightened sanitation

Daily cleaning, installation of cabin HEPA filters on flights from Denver to Slovenia

Mandatory masks

Masks required on board, masks provided on flights from Denver to Slovenia

Social distancing seating

Middle seats unavailable to book on flights from Denver to Slovenia

Pre-flight testing

Testing for antibodies, testing for symptoms for flights from Denver to Slovenia

Book cheap flights from Denver to Slovenia

Recent round-trip flight deals

7/9
Fri
2 stops
Lufthansa
22h 00m
DEN - LJU
7/16
Fri
1 stop
Lufthansa
16h 55m
LJU - DEN
7/9
Fri
1 stop
Lufthansa
20h 25m
DEN - LJU
7/16
Fri
1 stop
Lufthansa
16h 55m
LJU - DEN
7/10
Sat
1 stop
Lufthansa
20h 25m
DEN - LJU
7/17
Sat
1 stop
Lufthansa
33h 30m
LJU - DEN
7/9
Fri
2 stops
British Airways
23h 10m
DEN - LJU
7/16
Fri
2 stops
British Airways
31h 33m
LJU - DEN
7/9
Fri
2 stops
British Airways
34h 50m
DEN - LJU
7/17
Sat
1 stop
British Airways
30h 50m
LJU - DEN
7/9
Fri
2 stops
Multiple Airlines
17h 50m
DEN - LJU
7/16
Fri
3 stops
Multiple Airlines
42h 02m
LJU - DEN
7/8
Thu
2 stops
British Airways
33h 10m
DEN - LJU
7/16
Fri
2 stops
British Airways
31h 33m
LJU - DEN
9/3
Fri
1 stop
Multiple Airlines
14h 25m
DEN - LJU
9/15
Wed
2 stops
Multiple Airlines
40h 56m
LJU - DEN
9/3
Fri
1 stop
Lufthansa
20h 35m
DEN - LJU
9/15
Wed
1 stop
Lufthansa
14h 35m
LJU - DEN
9/3
Fri
2 stops
Multiple Airlines
32h 15m
DEN - LJU
9/15
Wed
2 stops
Multiple Airlines
40h 58m
LJU - DEN
9/3
Fri
1 stop
Lufthansa
20h 35m
DEN - LJU
9/16
Thu
2 stops
Lufthansa
15h 25m
LJU - DEN
9/2
Thu
2 stops
Multiple Airlines
21h 55m
DEN - LJU
9/15
Wed
1 stop
Multiple Airlines
14h 35m
LJU - DEN
9/3
Fri
2 stops
Multiple Airlines
15h 25m
DEN - LJU
9/16
Thu
2 stops
Multiple Airlines
15h 25m
LJU - DEN
9/16
Thu
2 stops
Multiple Airlines
37h 05m
DEN - LJU
9/22
Wed
2 stops
Multiple Airlines
32h 23m
LJU - DEN
9/2
Thu
2 stops
Multiple Airlines
21h 55m
DEN - LJU
9/16
Thu
2 stops
Multiple Airlines
15h 25m
LJU - DEN
9/2
Thu
2 stops
British Airways
32h 43m
DEN - LJU
9/15
Wed
2 stops
British Airways
29h 38m
LJU - DEN
9/3
Fri
1 stop
Lufthansa
20h 35m
DEN - LJU
9/16
Thu
1 stop
Lufthansa
31h 10m
LJU - DEN
8/23
Mon
2 stops
Lufthansa
44h 30m
DEN - LJU
9/9
Thu
1 stop
Lufthansa
14h 35m
LJU - DEN
11/4
Thu
2 stops
SWISS
17h 10m
DEN - LJU
11/7
Sun
2 stops
SWISS
38h 35m
LJU - DEN
9/1
Wed
2 stops
Delta
26h 41m
DEN - LJU
9/15
Wed
2 stops
Delta
17h 44m
LJU - DEN
Show more results

Recent one-way flight deals

7/1
Thu
1 stop
SWISS
16h 45m
DEN - LJU
6/29
Tue
3 stops
Multiple Airlines
55h 01m
DEN - LJU
7/1
Thu
3 stops
Multiple Airlines
22h 50m
DEN - LJU
7/2
Fri
1 stop
Lufthansa
11h 55m
DEN - LJU
7/2
Fri
3 stops
Multiple Airlines
55h 01m
DEN - LJU
7/3
Sat
3 stops
Multiple Airlines
40h 47m
DEN - LJU
6/28
Mon
3 stops
Multiple Airlines
52h 06m
DEN - LJU
7/3
Sat
2 stops
Multiple Airlines
33h 25m
DEN - LJU
7/4
Sun
2 stops
Multiple Airlines
19h 45m
DEN - LJU
7/4
Sun
3 stops
Multiple Airlines
59h 15m
DEN - LJU
7/2
Fri
2 stops
Multiple Airlines
32h 25m
DEN - LJU
7/1
Thu
2 stops
Multiple Airlines
45h 44m
DEN - LJU
6/28
Mon
2 stops
Multiple Airlines
24h 35m
DEN - LJU
6/30
Wed
2 stops
Multiple Airlines
39h 05m
DEN - LJU
6/28
Mon
2 stops
Multiple Airlines
29h 30m
DEN - LJU
6/28
Mon
2 stops
Multiple Airlines
29h 30m
DEN - LJU
6/29
Tue
2 stops
Delta
15h 50m
DEN - LJU
6/28
Mon
1 stop
Lufthansa
22h 00m
DEN - LJU
6/27
Sun
2 stops
Delta
50h 31m
DEN - LJU
7/4
Sun
1 stop
Lufthansa
11h 55m
DEN - LJU
Show more results
-
1
  • Round-trip
  • One-way
  • Multi-city
  • Trip Builder
  • Economy
  • Premium Economy
  • Business
  • First
  • Multiple
Economy
  • Economy
  • Premium Economy
  • Business
  • First
Economy
  • Economy
  • Premium Economy
  • Business
  • First
Economy
  • Economy
  • Premium Economy
  • Business
  • First
Economy
  • Economy
  • Premium Economy
  • Business
  • First
Economy
  • Economy
  • Premium Economy
  • Business
  • First
Economy
  • Economy
  • Premium Economy
  • Business
  • First