HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ljubljana

$324+ Cheap flights from Denver (DEN) to Ljubljana (LJU)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/9. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — LJU
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Denver to Ljubljana with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Denver to Ljubljana

Discover tips and strategies to find the most affordable flight options for your journey from Denver (DEN) to Ljubljana (LJU). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 17, 2025.

Round-trip from

$803
(FlightHub)

One-way from

$324
(Kiwi.com)

Popular in

December

Cheapest in

April

Average price

$941
From Denver Intl to Ljubljana Joze Pucnik
Search Deals
One-way flight from Denver Intl to Ljubljana Joze Pucnik
Search Deals
Highest demand for flights based on searches. 39% potential increase in price ($827 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 21% potential price decrease ($224 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Find flight deals from Denver to Ljubljana

Cheapest flights from Denver to Ljubljana
Explore the most affordable flight options available from Denver to Ljubljana. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

This FlightHub deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/97:20 pmDEN - LJU
1 stop29h 05mTurkish Airlines
Tue 12/169:20 amLJU - DEN
1 stop16h 15mTurkish Airlines
Deal found 9/14$803
This CheapOair deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/136:44 pmDEN - LJU
2 stops38h 31mBritish Airways
Mon 10/203:10 pmLJU - DEN
1 stop33h 15mBritish Airways
Deal found 9/14$811
This Cheapflightsfares deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/911:15 amDEN - LJU
2 stops14h 40mLufthansa
Tue 12/1610:35 amLJU - DEN
1 stop13h 25mLufthansa
Deal found 9/14$886
This Mytrip deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/91:25 pmDEN - LJU
3 stops35h 30mMultiple Airlines
Tue 12/162:55 pmLJU - DEN
3 stops31h 40mMultiple Airlines
Deal found 9/14$920
This Cheapflightsfares deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/224:15 pmDEN - LJU
1 stop12h 20mLufthansa
Fri 11/1410:35 amLJU - DEN
2 stops20h 40mLufthansa
Deal found 9/16$935
This Expedia deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/134:44 pmDEN - LJU
2 stops40h 31mMultiple Airlines
Mon 10/203:10 pmLJU - DEN
2 stops37h 17mMultiple Airlines
Deal found 9/14$967
This Trip.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/307:50 pmDEN - LJU
1 stop15h 25mTurkish Airlines
Fri 10/38:10 pmLJU - DEN
1 stop29h 45mTurkish Airlines
Deal found 9/16$970
This FlightHub deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/117:50 pmDEN - LJU
1 stop33h 20mTurkish Airlines
Sat 10/188:10 pmLJU - DEN
1 stop29h 45mTurkish Airlines
Deal found 9/16$979

Cheapflights Fare Finder

 
Customize your flight search to find flights from Denver to Ljubljana that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 17, 2025.
Use the filters below to find and compare flights from Denver to Ljubljana that are best for you.

Fly from

Denver

Fly to

Ljubljana

Route

Depart

Return

Price

DenverLjubljana

DEN - LJU

DENLJU

Denver Intl

Tue 12/9

7:20 pm-8:25 am

1 stop29h 05m

Ljubljana Joze Pucnik

Tue 12/16

9:20 am-5:35 pm

1 stop16h 15m

$803

DenverLjubljana

DEN - LJU

DENLJU

Denver Intl

Mon 10/13

6:44 pm-5:15 pm

2 stops38h 31m

Ljubljana Joze Pucnik

Mon 10/20

3:10 pm-4:25 pm

1 stop33h 15m

$811

DenverLjubljana

DEN - LJU

DENLJU

Denver Intl

Tue 12/9

11:15 am-9:55 am

2 stops14h 40m

Ljubljana Joze Pucnik

Tue 12/16

10:35 am-4:00 pm

1 stop13h 25m

$886

DenverLjubljana

DEN - LJU

DENLJU

Denver Intl

Tue 12/9

1:25 pm-8:55 am

3 stops35h 30m

Ljubljana Joze Pucnik

Tue 12/16

2:55 pm-2:35 pm

3 stops31h 40m

$920

DenverLjubljana

DEN - LJU

DENLJU

Denver Intl

Wed 10/22

4:15 pm-12:35 pm

1 stop12h 20m

Ljubljana Joze Pucnik

Fri 11/14

10:35 am-11:15 pm

2 stops20h 40m

$935

DenverLjubljana

DEN - LJU

DENLJU

Denver Intl

Thu 10/9

8:10 pm-7:10 pm

3 stops39h 00m

$324

DenverLjubljana

DEN - LJU

DENLJU

Denver Intl

Fri 10/10

7:15 am-7:10 pm

3 stops27h 55m

$334

DenverLjubljana

DEN - LJU

DENLJU

Denver Intl

Sat 9/20

6:39 pm-9:40 am

2 stops55h 01m

$465

DenverLjubljana

DEN - LJU

DENLJU

Denver Intl

Fri 10/10

7:50 pm-8:30 am

1 stop28h 40m

$594

DenverLjubljana

DEN - LJU

DENLJU

Denver Intl

Sat 9/20

7:50 pm-8:30 am

1 stop28h 40m

$594

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 12 results
1
2

Best time to book a flight from Denver to Ljubljana

Have a flexible travel schedule? Discover the best time to fly to Ljubljana from Denver with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Denver to Ljubljana

What is the cheapest time of day to fly from DEN to LJU?

Find hourly flight availability from Denver to Ljubljana. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 17, 2025.

It’s optimal to fly from Denver to Ljubljana in the evening. By choosing this option you can save up to 69% on the cost of your flight, compared to a flight in the morning.

Reviews of airlines servicing Ljubljana

Get insights into the airlines that provide service to Ljubljana. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ljubljana. Reviews last updated September 17, 2025.
Read through reviews of airlines operating flights from Denver to Ljubljana, such as Turkish Airlines and Lufthansa. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Turkish Airlines
7.3
Good
3,965 reviews

Entertainment

7.4

Food

7.4

Comfort

7.3

Overall

7.3

Boarding

7.3

Crew

7.7

Reviews

1 / 20
2.0
Mediocre

Brian,Jul 2025

SEA - IST

Horrible check-in experience in Seattle. Was actually yelled at by a customer service rep and then he intentionally would put us in the back row to make sure our seats would not recline. When I complained to customer service they told me they did not find any issues with how we were treated. The sinks did not drain in the bathroom during the flight and my in-flight entertainment never worked during a 12 hour flight. They said they would reset 3 times but never did. Would never fly them again.
Turkish Airlines
7.3
Good
3,965 reviews
Turkish Airlines
7.3
Good
3,965 reviews

Entertainment

7.4

Food

7.4

Comfort

7.3

Overall

7.3

Boarding

7.3

Crew

7.7

Reviews

1 / 20
2.0
Mediocre

Brian,Jul 2025

SEA - IST

Horrible check-in experience in Seattle. Was actually yelled at by a customer service rep and then he intentionally would put us in the back row to make sure our seats would not recline. When I complained to customer service they told me they did not find any issues with how we were treated. The sinks did not drain in the bathroom during the flight and my in-flight entertainment never worked during a 12 hour flight. They said they would reset 3 times but never did. Would never fly them again.
Lufthansa
6.8
Okay
7,409 reviews
Turkish Airlines
7.3
Good
3,965 reviews

Entertainment

7.4

Food

7.4

Comfort

7.3

Overall

7.3

Boarding

7.3

Crew

7.7

Reviews

1 / 20
2.0
Mediocre

Brian,Jul 2025

SEA - IST

Horrible check-in experience in Seattle. Was actually yelled at by a customer service rep and then he intentionally would put us in the back row to make sure our seats would not recline. When I complained to customer service they told me they did not find any issues with how we were treated. The sinks did not drain in the bathroom during the flight and my in-flight entertainment never worked during a 12 hour flight. They said they would reset 3 times but never did. Would never fly them again.

Related info for your journey

Find useful and relevant information for your journey from Denver to Ljubljana. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Denver to Ljubljana?

    A quick flight from Denver to Ljubljana can take about 14h 40m. Turkish Airlines provides one of the quickest options available for as low as $886. The distance from Denver to Ljubljana is about 5400 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Denver to Ljubljana round-trip?

    Cheapflights users have booked flights from Denver to Ljubljana round-trip from $598. Another airline that can offer you cheap pricing is Lufthansa. You may be able to fly from Denver to Ljubljana for 52% less than the average price by searching for these airlines.

  • Can I find deals for flights from Denver to Ljubljana that include hotel bookings?

    Yes. In addition to deals on Denver to Ljubljana flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Denver to Ljubljana?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Denver to Ljubljana.

  • Can I find deals for business class flights from Denver to Ljubljana?

    Yes. Cheapflights offers flight deals from Denver to Ljubljana by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Denver to Ljubljana?

    Currently, February is the cheapest month in which you can book a flight from Denver to Ljubljana (average of $710). Flying from Denver to Ljubljana in June is currently the most expensive (average of $1,434). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Ljubljana?

Book flights to Ljubljana if you plan to visit one of these locations
Kranjska Gora

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Denver to Ljubljana

See prices for flight routes from nearby airports that may be better suited for you.
Colorado Springs to Ljubljana flights

Top 2 airlines flying from Denver to Ljubljana

Discover the top 2 airlines that operate flights from Denver to Ljubljana. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$598Average$706FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$766Average$1,312FlexibilityNo cancel feeOn-time76%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.