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Slovenia

$673+ Cheap flights from Denver (DEN) to Slovenia

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 8/11. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — LJU
May 6 — May 131
Tue 5/6
Tue 5/13
1 adult, Economy
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Cheap flight deals from Denver to Slovenia

Keep the following information in mind while searching for Denver to Slovenia flight deals. Data was last updated May 1, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$673
(Orbitz)

Popular in

December

Cheapest in

April

Average price

$1,490
Provider with most accurate pricing for Denver Intl-Ljubljana Joze Pucnik flight deals.
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Provider most trusted by Cheapflights users for Denver Intl-Ljubljana Joze Pucnik flights.
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From Denver Intl to Slovenia
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Highest demand for flights based on searches. 39% potential increase in price ($820 potential increase over avg. RT price).
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Cheapest flight prices on average. 21% potential price decrease ($222 potential savings vs. average RT price).
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Average for round-trip flights in May 2025
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Find 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 May 1, 2025.

This Orbitz deal was found by Cheapflights users on 4/30. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/116:35 pmDEN - LJU
1 stop13h 35mBritish Airways
Mon 8/183:10 pmLJU - DEN
1 stop33h 15mBritish Airways
Deal found 4/30$673
This oojo deal was found by Cheapflights users on 4/30. 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.
Sat 9/137:50 pmDEN - LJU
1 stop15h 25mTurkish Airlines
Sat 9/279:25 amLJU - DEN
1 stop16h 30mTurkish Airlines
Deal found 4/30$709
This Finnair deal was found by Cheapflights users on 4/30. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/192:04 pmDEN - LJU
2 stops34h 41mMultiple Airlines
Tue 8/269:30 amLJU - DEN
2 stops21h 39mMultiple Airlines
Deal found 4/30$729
This StudentUniverse deal was found by Cheapflights users on 4/30. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/72:04 pmDEN - LJU
2 stops34h 41mFinnair
Thu 8/149:30 amLJU - DEN
2 stops38h 55mFinnair
Deal found 4/30$876
This Gurufare deal was found by Cheapflights users on 4/30. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/286:45 pmDEN - LJU
1 stop20h 10mLufthansa
Tue 11/46:30 amLJU - DEN
1 stop17h 25mLufthansa
Deal found 4/30$898
This Delta deal was found by Cheapflights users on 4/30. 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.
Sat 11/1511:59 pmDEN - LJU
2 stops27h 41mDelta
Thu 11/2712:35 pmLJU - DEN
2 stops19h 12mDelta
Deal found 4/30$961
This SWISS deal was found by Cheapflights users on 4/30. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/305:50 pmDEN - LJU
1 stop32h 15mSWISS
Thu 8/1410:50 amLJU - DEN
2 stops19h 52mSWISS
Deal found 4/30$977
This KLM deal was found by Cheapflights users on 4/30. 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.
Mon 11/1710:50 amDEN - LJU
2 stops16h 50mKLM
Fri 11/2812:35 pmLJU - DEN
2 stops19h 12mKLM
Deal found 4/30$1,024

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 May 1, 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

Mon 8/11

6:35 pm-4:10 pm

1 stop13h 35m

Ljubljana Joze Pucnik

Mon 8/18

3:10 pm-4:25 pm

1 stop33h 15m

$673

DenverLjubljana

DEN - LJU

DENLJU

Denver Intl

Sat 9/13

7:50 pm-7:15 pm

1 stop15h 25m

Ljubljana Joze Pucnik

Sat 9/27

9:25 am-5:55 pm

1 stop16h 30m

$709

DenverLjubljana

DEN - LJU

DENLJU

Denver Intl

Tue 8/19

2:04 pm-8:45 am

2 stops34h 41m

Ljubljana Joze Pucnik

Tue 8/26

9:30 am-11:09 pm

2 stops21h 39m

$729

DenverLjubljana

DEN - LJU

DENLJU

Denver Intl

Thu 8/7

2:04 pm-8:45 am

2 stops34h 41m

Ljubljana Joze Pucnik

Thu 8/14

9:30 am-4:25 pm

2 stops38h 55m

$876

DenverLjubljana

DEN - LJU

DENLJU

Denver Intl

Tue 10/28

6:45 pm-9:55 pm

1 stop20h 10m

Ljubljana Joze Pucnik

Tue 11/4

6:30 am-3:55 pm

1 stop17h 25m

$898

DenverLjubljana

DEN - LJU

DENLJU

Denver Intl

Wed 7/30

5:50 pm-10:05 am

1 stop32h 15m

Ljubljana Joze Pucnik

Thu 8/14

10:50 am-10:42 pm

2 stops19h 52m

$977

DenverLjubljana

DEN - LJU

DENLJU

Denver Intl

Thu 8/28

2:04 pm-8:45 am

2 stops34h 41m

$684

DenverLjubljana

DEN - LJU

DENLJU

Denver Intl

Thu 8/28

4:15 pm-7:25 pm

1 stop19h 10m

$837

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

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

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

Find hourly flight availability from Denver to Slovenia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 1, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Denver to Slovenia as you normally would.

Rainfall in Slovenia by month

Plan your trip to Slovenia by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Slovenia ranges from 1.6 - 2.8 inches per month. October is typically the wettest month, when rainfall can reach 2.8 in. January is typically the driest time to visit Slovenia when rainfall is around 1.6 in.

Temperature in Slovenia by month

Plan your trip to Slovenia by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Slovenia, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

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 May 1, 2025.
Get a feel of what it's like to fly with Finnair, SWISS and Turkish Airlines from Denver to Slovenia by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Finnair
7.6
Good
1,275 reviews

Food

6.7

Boarding

7.6

Crew

8.1

Entertainment

6.9

Comfort

7.4

Overall

7.6

Reviews

1 / 20
4.0
Okay

Julia,Feb 2024

JFK - HEL

The bathroom was broken, AC wasn’t working, tv wasn’t working for half the flight
Finnair
7.6
Good
1,275 reviews
Finnair
7.6
Good
1,275 reviews

Food

6.7

Boarding

7.6

Crew

8.1

Entertainment

6.9

Comfort

7.4

Overall

7.6

Reviews

1 / 20
4.0
Okay

Julia,Feb 2024

JFK - HEL

The bathroom was broken, AC wasn’t working, tv wasn’t working for half the flight
SWISS
7.5
Good
1,588 reviews
Finnair
7.6
Good
1,275 reviews

Food

6.7

Boarding

7.6

Crew

8.1

Entertainment

6.9

Comfort

7.4

Overall

7.6

Reviews

1 / 20
4.0
Okay

Julia,Feb 2024

JFK - HEL

The bathroom was broken, AC wasn’t working, tv wasn’t working for half the flight
Turkish Airlines
7.3
Good
3,790 reviews
Finnair
7.6
Good
1,275 reviews

Food

6.7

Boarding

7.6

Crew

8.1

Entertainment

6.9

Comfort

7.4

Overall

7.6

Reviews

1 / 20
4.0
Okay

Julia,Feb 2024

JFK - HEL

The bathroom was broken, AC wasn’t working, tv wasn’t working for half the flight
Lufthansa
6.7
Okay
7,045 reviews
Finnair
7.6
Good
1,275 reviews

Food

6.7

Boarding

7.6

Crew

8.1

Entertainment

6.9

Comfort

7.4

Overall

7.6

Reviews

1 / 20
4.0
Okay

Julia,Feb 2024

JFK - HEL

The bathroom was broken, AC wasn’t working, tv wasn’t working for half the flight
British Airways
6.6
Okay
6,842 reviews
Finnair
7.6
Good
1,275 reviews

Food

6.7

Boarding

7.6

Crew

8.1

Entertainment

6.9

Comfort

7.4

Overall

7.6

Reviews

1 / 20
4.0
Okay

Julia,Feb 2024

JFK - HEL

The bathroom was broken, AC wasn’t working, tv wasn’t working for half the flight

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.

  • 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.

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

    Currently, February is the cheapest month in which you can book a flight from Denver to Slovenia (average of $710). Flying from Denver to Slovenia in June is currently the most expensive (average of $1,515). 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

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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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$598Average$683FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$796Average$1,244FlexibilityNo cancel feeOn-time76%

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