$504+ Cheap flights from Denver (DEN) to Ljubljana (LJU)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/29. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — LJU
Oct 18 — Oct 251
Round-trip
1 adult, Economy
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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
Cheapest
Best
Last-minute
One-way
Cheapest flights from Denver to LjubljanaExplore 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 18, 2026.
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 18, 2026.
This Mytrip deal was found by Cheapflights users on 9/17. 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.
Mon 11/23:40 pm -
3 stops33h 20m
Mon 11/93:05 pm -
3 stops34h 55m
Deal found 9/17![Multiple Airlines logo]()
$906
This Turkish Airlines 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/308:30 pm -
1 stop28h 55m
Fri 11/69:20 am -
1 stop17h 05m
Deal found 9/14![Turkish Airlines logo]()
$939
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/15:25 pm -
1 stop19h 55m
Fri 12/116:40 am -
1 stop16h 55m
Deal found 9/14![Lufthansa logo]()
$967
This Justfly.com 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/16:00 am -
2 stops42h 25m
Fri 12/119:20 am -
1 stop16h 05m
Deal found 9/14![Turkish Airlines logo]()
$974
This Delta deal was found by Cheapflights users on 9/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/26:00 am -
2 stops22h 20m
Mon 11/912:55 pm -
2 stops36h 15m
Deal found 9/17![Delta logo]()
$987
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/110:20 am -
2 stops15h 45m
Fri 12/116:40 am -
2 stops21h 47m
Deal found 9/14![United Airlines logo]()
$990
This oojo deal was found by Cheapflights users on 9/17. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/25:25 pm -
1 stop19h 55m
Mon 11/910:45 am -
2 stops35h 45m
Deal found 9/17![Lufthansa logo]()
$1,004
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/214:15 pm -
1 stop19h 10m
Wed 9/3010:10 am -
1 stop13h 30m
Deal found 9/14![Lufthansa logo]()
$1,077
This FlightHub deal was found by Cheapflights users on 9/17. 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.
Sun 10/114:05 pm -
1 stop19h 20m
Sun 10/1810:15 am -
2 stops20h 53m
Deal found 9/17![Multiple Airlines logo]()
$1,084
Best flights from Denver to LjubljanaDiscover carefully curated flight deals from Denver to Ljubljana that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 18, 2026.
Discover carefully curated flight deals from Denver to Ljubljana that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 18, 2026.
This United Airlines deal was found by Cheapflights users on 9/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/111:20 am -
2 stops14h 45m
Thu 3/46:40 am -
1 stop15h 00m
Deal found 9/15![United Airlines logo]()
$862
This Turkish Airlines deal was found by Cheapflights users on 9/17. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/28:30 pm -
1 stop27h 55m
Mon 11/99:20 am -
1 stop16h 05m
Deal found 9/17![Turkish Airlines logo]()
$939
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/15:25 pm -
1 stop19h 55m
Fri 12/116:40 am -
1 stop16h 55m
Deal found 9/14![Lufthansa logo]()
$967
Last-minute flights from Denver to LjubljanaDiscover last-minute flight deals from Denver to Ljubljana. Data last updated September 18, 2026 and is based on user searches.
Discover last-minute flight deals from Denver to Ljubljana. Data last updated September 18, 2026 and is based on user searches.
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/214:15 pm -
1 stop19h 10m
Wed 9/3010:10 am -
1 stop13h 30m
Deal found 9/14![Lufthansa logo]()
$1,077
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.
Mon 9/214:15 pm -
2 stops21h 30m
Wed 9/306:25 am -
2 stops21h 20m
Deal found 9/14![Multiple Airlines logo]()
$1,121
This United Airlines deal was found by Cheapflights users on 9/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/215:30 am -
2 stops19h 45m
Wed 9/306:25 am -
2 stops19h 55m
Deal found 9/13![United Airlines logo]()
$1,123
This FlightHub deal was found by Cheapflights users on 9/17. 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.
Sun 10/114:05 pm -
1 stop19h 20m
Sun 10/1810:15 am -
2 stops20h 53m
Deal found 9/17![Multiple Airlines logo]()
$1,084
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/115:40 pm -
1 stop20h 15m
Sun 10/188:05 pm -
1 stop26h 15m
Deal found 9/14![Lufthansa logo]()
$1,097
This BusinessClass 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1112:17 pm -
2 stops17h 58m
Sun 10/189:25 pm -
2 stops27h 54m
Deal found 9/14![British Airways logo]()
$1,113
This Turkish Airlines 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/308:30 pm -
1 stop28h 55m
Fri 11/69:20 am -
1 stop17h 05m
Deal found 9/14![Turkish Airlines logo]()
$939
One-way flights from Denver to LjubljanaSearch for one-way flight options from Denver to Ljubljana. Find affordable one-way fares based on user searches. Data last updated September 18, 2026.
Search for one-way flight options from Denver to Ljubljana. Find affordable one-way fares based on user searches. Data last updated September 18, 2026.
This Kiwi.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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/294:40 pm -
3 stops36h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Multiple Airlines logo]()
$504
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/296:35 am -
2 stops23h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Delta logo]()
$702
Find 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 18, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $862 (United Airlines) |
One-way from | $504 (Kiwi.com) |
Popular in | October |
Cheapest in | February |
Average price | $1,248 |
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 7,457,451 searches. Data last updated September 18, 2026.
Use the filters below to find and compare flights from Denver to Ljubljana that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
DenverLjubljana
DEN Denver Intl - LJU Ljubljana Joze Pucnik
DENLJU
Denver Intl
Tue 9/29
4:40 pm-1:20 pm
3 stops36h 40m
Ljubljana Joze Pucnik
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$504
Quickest round-trip
DenverLjubljana
DEN Denver Intl - LJU Ljubljana Joze Pucnik
DENLJU
Denver Intl
Tue 9/29
5:40 pm-9:45 pm
1 stop20h 05m
Ljubljana Joze Pucnik
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$702
DenverLjubljana
DEN Denver Intl - LJU Ljubljana Joze Pucnik
DENLJU
Denver Intl
Tue 9/29
6:35 am-1:50 pm
2 stops23h 15m
Ljubljana Joze Pucnik
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$702
DenverLjubljana
DEN Denver Intl - LJU Ljubljana Joze Pucnik
DENLJU
Denver Intl
Mon 3/1
11:20 am-10:05 am
2 stops14h 45m
Ljubljana Joze Pucnik
Thu 3/4
6:40 am-1:40 pm
1 stop15h 00m
$862
DenverLjubljana
DEN Denver Intl - LJU Ljubljana Joze Pucnik
DENLJU
Denver Intl
Mon 11/2
8:30 pm-8:25 am
1 stop27h 55m
Ljubljana Joze Pucnik
Mon 11/9
9:20 am-5:25 pm
1 stop16h 05m
$939
DenverLjubljana
DEN Denver Intl - LJU Ljubljana Joze Pucnik
DENLJU
Denver Intl
Tue 12/1
5:25 pm-9:20 pm
1 stop19h 55m
Ljubljana Joze Pucnik
Fri 12/11
6:40 am-3:35 pm
1 stop16h 55m
$967
Sorted by cheapest first
Compare providers for flights from Denver to Ljubljana
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Denver to Ljubljana in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Denver-Ljubljana flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Denver-Ljubljana flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Denver-Ljubljana flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Denver-Ljubljana flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Denver-Ljubljana flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
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.
DEN-LJU
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
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 18, 2026.
Read through reviews of airlines operating flights from Denver to Ljubljana, such as Turkish Airlines,United Airlines, andLufthansa. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.3
Entertainment
7.5
Crew
7.8
Overall
7.4
Boarding
7.3
Food
7.5
Reviews
1 / 20
6.0
GoodAnonymous,Sep 2026
LAX - IST
Comfort
7.3
Entertainment
7.5
Crew
7.8
Overall
7.4
Boarding
7.3
Food
7.5
Reviews
1 / 20
6.0
GoodAnonymous,Sep 2026
LAX - IST
Comfort
7.3
Entertainment
7.5
Crew
7.8
Overall
7.4
Boarding
7.3
Food
7.5
Reviews
1 / 20
6.0
GoodAnonymous,Sep 2026
LAX - IST
Comfort
7.3
Entertainment
7.5
Crew
7.8
Overall
7.4
Boarding
7.3
Food
7.5
Reviews
1 / 20
6.0
GoodAnonymous,Sep 2026
LAX - IST
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.
Traveling to a place near Ljubljana?
Book flights to Ljubljana if you plan to visit one of these locationsKranjska Gora
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Other flights to Ljubljana
Explore flights to Ljubljana departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 18, 2026.
Denver and Ljubljana flights
Browse other Denver and Ljubljana flight options. Last updated on September 18, 2026.
Other flights from Denver
Browse through other flights departing from Denver. Flights are based on user searches made on Cheapflights and were last updated on September 18, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 3 airlines flying from Denver to Ljubljana
Discover the top 3 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 7,457,451 searches. Data last updated September 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$739 | Average$984 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$947 | Average$1,374 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$987 | Average$1,282 | FlexibilityNo cancel fee | On-time69% |