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$444+ 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 7/29. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — LJU
Apr 29 — May 61
Tue 4/29
Tue 5/6
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 April 24, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$710
(FlightHub)

One-way from

$444
(Kiwi.com)

Popular in

December

Cheapest in

April

Average price

$646
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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One-way flight from Denver Intl to Slovenia
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Highest demand for flights based on searches. 39% potential increase in price ($818 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 April 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 April 24, 2025.

This FlightHub deal was found by Cheapflights users on 4/22. 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 9/137:50 pmDEN - LJU
1 stop15h 25mTurkish Airlines
Sat 9/279:25 amLJU - DEN
1 stop16h 30mTurkish Airlines
Deal found 4/22$710
This Gurufare deal was found by Cheapflights users on 4/22. 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.
Wed 9/106:35 pmDEN - LJU
1 stop15h 15mBritish Airways
Mon 9/223:10 pmLJU - DEN
1 stop33h 15mBritish Airways
Deal found 4/22$861
This StudentUniverse deal was found by Cheapflights users on 4/22. 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 10/212:53 pmDEN - LJU
2 stops35h 52mFinnair
Thu 10/169:30 amLJU - DEN
2 stops40h 12mFinnair
Deal found 4/22$1,011
This Mytrip deal was found by Cheapflights users on 4/22. 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.
Sun 5/115:50 pmDEN - LJU
3 stops31h 10mMultiple Airlines
Sat 5/241:20 pmLJU - DEN
3 stops35h 00mMultiple Airlines
Deal found 4/22$1,102
This Delta deal was found by Cheapflights users on 4/22. 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 7/3010:45 amDEN - LJU
2 stops16h 50mDelta
Sat 8/912:35 pmLJU - DEN
2 stops28h 05mDelta
Deal found 4/22$1,333
This Gurufare deal was found by Cheapflights users on 4/23. 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.
Sun 7/65:59 pmDEN - LJU
1 stop20h 26mLufthansa
Sun 7/138:00 pmLJU - DEN
1 stop25h 45mLufthansa
Deal found 4/23$1,371
This Gurufare deal was found by Cheapflights users on 4/22. 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.
Sun 6/295:50 pmDEN - LJU
1 stop16h 45mSWISS
Sat 7/127:20 pmLJU - DEN
2 stops33h 16mSWISS
Deal found 4/22$1,601

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 April 24, 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 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

$710

DenverLjubljana

DEN - LJU

DENLJU

Denver Intl

Wed 9/10

6:35 pm-5:50 pm

1 stop15h 15m

Ljubljana Joze Pucnik

Mon 9/22

3:10 pm-4:25 pm

1 stop33h 15m

$861

DenverLjubljana

DEN - LJU

DENLJU

Denver Intl

Thu 10/2

12:53 pm-8:45 am

2 stops35h 52m

Ljubljana Joze Pucnik

Thu 10/16

9:30 am-5:42 pm

2 stops40h 12m

$1,011

DenverLjubljana

DEN - LJU

DENLJU

Denver Intl

Sun 5/11

5:50 pm-9:00 am

3 stops31h 10m

Ljubljana Joze Pucnik

Sat 5/24

1:20 pm-4:20 pm

3 stops35h 00m

$1,102

DenverLjubljana

DEN - LJU

DENLJU

Denver Intl

Wed 7/30

10:45 am-11:35 am

2 stops16h 50m

Ljubljana Joze Pucnik

Sat 8/9

12:35 pm-8:40 am

2 stops28h 05m

$1,333

DenverLjubljana

DEN - LJU

DENLJU

Denver Intl

Sun 7/6

5:59 pm-10:25 pm

1 stop20h 26m

Ljubljana Joze Pucnik

Sun 7/13

8:00 pm-1:45 pm

1 stop25h 45m

$1,371

DenverLjubljana

DEN - LJU

DENLJU

Denver Intl

Sun 6/29

5:50 pm-6:35 pm

1 stop16h 45m

Ljubljana Joze Pucnik

Sat 7/12

7:20 pm-8:36 pm

2 stops33h 16m

$1,601

DenverLjubljana

DEN - LJU

DENLJU

Denver Intl

Tue 7/29

12:34 am-9:55 am

2 stops49h 21m

$444

DenverLjubljana

DEN - LJU

DENLJU

Denver Intl

Wed 7/30

6:35 pm-5:50 pm

1 stop15h 15m

$533

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/22

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 April 24, 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 April 24, 2025.
Delta
8.0
Very good
7,920 reviews

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,920 reviews
Delta
8.0
Very good
7,920 reviews

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Finnair
7.6
Good
1,272 reviews
Delta
8.0
Very good
7,920 reviews

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
SWISS
7.5
Good
1,582 reviews
Delta
8.0
Very good
7,920 reviews

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Turkish Airlines
7.3
Good
3,775 reviews
Delta
8.0
Very good
7,920 reviews

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Lufthansa
6.7
Okay
7,027 reviews
Delta
8.0
Very good
7,920 reviews

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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 $1,520). 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 April 24, 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$598Average$672FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$796Average$1,244FlexibilityNo cancel feeOn-time76%

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