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$637+ Cheap flights from Denver (DEN) to Slovenia

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 5/19. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — LJU
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheap flight deals from Denver to Slovenia

Cheapest flights from Denver to Slovenia
Explore the most affordable flight options available from Denver to Slovenia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

This Trip.com deal was found by Cheapflights users on 12/10. 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 12/307:20 pmDEN - LJU
1 stop29h 05mTurkish Airlines
Sat 1/179:20 amLJU - DEN
1 stop16h 15mTurkish Airlines
Deal found 12/10$885
This Kiwi.com deal was found by Cheapflights users on 12/10. 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 12/307:20 pmDEN - LJU
1 stop15h 20mTurkish Airlines
Thu 1/159:20 amLJU - DEN
1 stop16h 15mTurkish Airlines
Deal found 12/10$912
This Turkish Airlines deal was found by Cheapflights users on 12/10. 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.
Tue 12/307:20 pmDEN - LJU
1 stop29h 05mTurkish Airlines
Mon 1/197:35 pmLJU - DEN
1 stop30h 00mTurkish Airlines
Deal found 12/10$914
This Lufthansa deal was found by Cheapflights users on 12/10. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/314:20 pmDEN - LJU
1 stop19h 10mLufthansa
Fri 1/169:45 amLJU - DEN
1 stop12h 50mLufthansa
Deal found 12/10$1,027
This Air France deal was found by Cheapflights users on 12/10. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3110:35 amDEN - LJU
2 stops17h 05mAir France
Fri 1/1612:50 pmLJU - DEN
2 stops38h 38mAir France
Deal found 12/10$1,029
This Delta deal was found by Cheapflights users on 12/10. 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.
Wed 12/3110:35 amDEN - LJU
2 stops17h 45mDelta
Thu 1/1512:50 pmLJU - DEN
2 stops39h 06mDelta
Deal found 12/10$1,035
This Lufthansa deal was found by Cheapflights users on 12/10. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/318:20 pmDEN - LJU
1 stop15h 10mLufthansa
Sun 1/186:35 amLJU - DEN
1 stop15h 05mLufthansa
Deal found 12/10$1,075
This Lufthansa deal was found by Cheapflights users on 12/10. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/314:20 pmDEN - LJU
1 stop19h 10mLufthansa
Sat 1/179:45 amLJU - DEN
1 stop12h 50mLufthansa
Deal found 12/10$1,077
This KLM deal was found by Cheapflights users on 12/10. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3111:55 amDEN - LJU
2 stops15h 45mMultiple Airlines
Sat 1/171:40 pmLJU - DEN
2 stops35h 46mMultiple Airlines
Deal found 12/10$1,079
This Delta deal was found by Cheapflights users on 12/10. 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.
Wed 12/316:45 amDEN - LJU
2 stops21h 35mDelta
Sun 1/181:40 pmLJU - DEN
2 stops29h 17mDelta
Deal found 12/10$1,085
This Air France deal was found by Cheapflights users on 12/10. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3010:54 amDEN - LJU
2 stops17h 26mAir France
Fri 1/1612:50 pmLJU - DEN
2 stops38h 38mAir France
Deal found 12/10$1,095

Find flight deals from Denver to Slovenia

Keep the following information in mind while searching for Denver to Slovenia flight deals. Data was last updated December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$836
(FlightHub)

One-way from

$637
(KAYAK)

Popular in

June

Cheapest in

April

Average price

$903
Provider with most accurate pricing for Denver Intl-Ljubljana Joze Pucnik flight deals.
Search Deals
Provider most trusted by Cheapflights users for Denver Intl-Ljubljana Joze Pucnik flights.
Search Deals
From Denver Intl to Slovenia
Search Deals
One-way flight from Denver Intl to Slovenia
Search Deals
Highest demand for flights based on searches. 28% potential increase in price ($426 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($58 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Denver to Slovenia 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 December 12, 2025.
Use the filters below to find and compare flights from Denver to Slovenia that are best for you.

Fly from

Denver

Fly to

Slovenia

Route

Depart

Return

Price

DenverLjubljana

DEN - LJU

DENLJU

Denver Intl

Sat 5/2

8:25 pm-1:00 pm

1 stop32h 35m

Ljubljana Joze Pucnik

Sun 5/17

9:40 am-6:25 pm

1 stop16h 45m

$836

DenverLjubljana

DEN - LJU

DENLJU

Denver Intl

Mon 2/2

11:20 am-2:05 pm

2 stops18h 45m

Ljubljana Joze Pucnik

Tue 2/17

6:30 am-10:05 pm

2 stops23h 35m

$847

DenverLjubljana

DEN - LJU

DENLJU

Denver Intl

Fri 3/20

8:20 pm-6:40 pm

1 stop15h 20m

Ljubljana Joze Pucnik

Sun 3/29

9:40 am-6:25 pm

1 stop16h 45m

$863

DenverLjubljana

DEN - LJU

DENLJU

Denver Intl

Mon 2/2

4:20 pm-12:40 pm

1 stop12h 20m

Ljubljana Joze Pucnik

Tue 2/17

10:35 am-4:00 pm

1 stop13h 25m

$871

DenverLjubljana

DEN - LJU

DENLJU

Denver Intl

Tue 12/30

7:20 pm-8:25 am

1 stop29h 05m

Ljubljana Joze Pucnik

Sat 1/17

9:20 am-5:35 pm

1 stop16h 15m

$885

DenverLjubljana

DEN - LJU

DENLJU

Denver Intl

Tue 12/30

7:20 pm-6:40 pm

1 stop15h 20m

Ljubljana Joze Pucnik

Thu 1/15

9:20 am-5:35 pm

1 stop16h 15m

$912

DenverLjubljana

DEN - LJU

DENLJU

Denver Intl

Thu 1/22

7:20 pm-6:40 pm

1 stop15h 20m

Ljubljana Joze Pucnik

Mon 1/26

7:35 pm-5:35 pm

1 stop30h 00m

$914

DenverLjubljana

DEN - LJU

DENLJU

Denver Intl

Sat 5/2

11:05 am-2:25 pm

2 stops19h 20m

Ljubljana Joze Pucnik

Sun 5/17

8:45 pm-11:01 pm

2 stops34h 16m

$940

DenverLjubljana

DEN - LJU

DENLJU

Denver Intl

Tue 5/19

11:59 pm-8:45 am

2 stops24h 46m

$637

DenverLjubljana

DEN - LJU

DENLJU

Denver Intl

Tue 5/19

6:40 pm-5:15 pm

1 stop14h 35m

$748

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Best time to book a flight from Denver to Slovenia

Have a flexible travel schedule? Discover the best time to fly to Slovenia 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 Slovenia
No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Slovenia

Get insights into the airlines that provide service to Slovenia. 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 Slovenia. Reviews last updated December 12, 2025.
Peruse reviews from past customers who have flown with Turkish Airlines and Lufthansa from Denver to Slovenia to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Turkish Airlines
7.3
Good
4,089 reviews

Crew

7.8

Food

7.4

Comfort

7.3

Entertainment

7.4

Boarding

7.3

Overall

7.3

Reviews

1 / 20
6.0
Good

Chandra,Nov 2025

ATL - IST

TV was not available in Indigo from Istanbul to Delhi. Seat was not moving back. It was jammed.
Turkish Airlines
7.3
Good
4,089 reviews
Turkish Airlines
7.3
Good
4,089 reviews

Crew

7.8

Food

7.4

Comfort

7.3

Entertainment

7.4

Boarding

7.3

Overall

7.3

Reviews

1 / 20
6.0
Good

Chandra,Nov 2025

ATL - IST

TV was not available in Indigo from Istanbul to Delhi. Seat was not moving back. It was jammed.
Lufthansa
6.8
Okay
7,626 reviews
Turkish Airlines
7.3
Good
4,089 reviews

Crew

7.8

Food

7.4

Comfort

7.3

Entertainment

7.4

Boarding

7.3

Overall

7.3

Reviews

1 / 20
6.0
Good

Chandra,Nov 2025

ATL - IST

TV was not available in Indigo from Istanbul to Delhi. Seat was not moving back. It was jammed.

Related info for your journey

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

  • What airport do you fly from for flights from Denver to Slovenia?

    Most people fly from Denver Intl (DEN) if they book a flight from Denver to Slovenia. Denver Intl is conveniently located just 18.5 mi from Denver’s city center.

  • How long is the flight from Denver to Slovenia?

    There are many flights that can get you from Denver to Slovenia in 12h 20m. Fly via Turkish Airlines, SWISS, or Lufthansa to get the fastest option. The distance between Denver and Slovenia is about 5400 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

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

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

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

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

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

See more FAQs

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Alternative routes for Denver to Slovenia

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Denver to Slovenia

Discover the top 2 airlines that operate flights from Denver to Slovenia. 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 December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$598Average$724FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$907Average$1,325FlexibilityNo cancel feeOn-time76%

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