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$702+ 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 9/13. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — LJU
Apr 9 — Apr 161
Wed 4/9
Wed 4/16
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 4, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$702
(oojo)

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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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 4, 2025.

This oojo deal was found by Cheapflights users on 4/4. 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 stop28h 40mTurkish Airlines
Sat 9/272:05 pmLJU - DEN
1 stop35h 50mTurkish Airlines
Deal found 4/4$702
This Travelocity deal was found by Cheapflights users on 4/3. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/146:35 pmDEN - LJU
1 stop14h 40mMultiple Airlines
Thu 10/239:30 amLJU - DEN
2 stops38h 55mMultiple Airlines
Deal found 4/3$917
This British Airways deal was found by Cheapflights users on 4/3. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/226:35 pmDEN - LJU
1 stop14h 40mBritish Airways
Wed 5/76:00 pmLJU - DEN
2 stops31h 07mBritish Airways
Deal found 4/3$930
This Mytrip deal was found by Cheapflights users on 4/3. 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.
Fri 5/165:50 pmDEN - LJU
1 stop16h 45mSWISS
Sat 5/247:20 pmLJU - DEN
1 stop29h 00mSWISS
Deal found 4/3$1,318
This Gurufare deal was found by Cheapflights users on 4/3. 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 6/298:00 amDEN - LJU
2 stops17h 35mLufthansa
Sat 7/126:30 amLJU - DEN
2 stops17h 57mLufthansa
Deal found 4/3$1,876

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 4, 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-8:30 am

1 stop28h 40m

Ljubljana Joze Pucnik

Sat 9/27

2:05 pm-5:55 pm

1 stop35h 50m

$702

DenverLjubljana

DEN - LJU

DENLJU

Denver Intl

Tue 4/22

6:35 pm-5:15 pm

1 stop14h 40m

Ljubljana Joze Pucnik

Wed 5/7

6:00 pm-5:07 pm

2 stops31h 07m

$930

DenverLjubljana

DEN - LJU

DENLJU

Denver Intl

Sun 5/18

12:15 pm-9:00 am

3 stops36h 45m

Ljubljana Joze Pucnik

Wed 6/18

6:40 am-11:27 am

3 stops36h 47m

$978

DenverLjubljana

DEN - LJU

DENLJU

Denver Intl

Fri 5/16

5:50 pm-6:35 pm

1 stop16h 45m

Ljubljana Joze Pucnik

Sat 5/24

7:20 pm-4:20 pm

1 stop29h 00m

$1,318

DenverLjubljana

DEN - LJU

DENLJU

Denver Intl

Sun 6/29

8:00 am-9:35 am

2 stops17h 35m

Ljubljana Joze Pucnik

Sat 7/12

6:30 am-4:27 pm

2 stops17h 57m

$1,876

DenverLjubljana

DEN - LJU

DENLJU

Denver Intl

Tue 6/10

12:34 am-9:55 am

2 stops49h 21m

$746

DenverLjubljana

DEN - LJU

DENLJU

Denver Intl

Thu 8/28

7:50 pm-7:15 pm

1 stop15h 25m

$852

DenverLjubljana

DEN - LJU

DENLJU

Denver Intl

Wed 6/11

5:50 pm-6:35 pm

1 stop16h 45m

$1,001

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/3

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 4, 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 4, 2025.
SWISS
7.5
Good
1,574 reviews

Comfort

7.4

Entertainment

6.7

Food

7.0

Overall

7.5

Crew

8.2

Boarding

7.6

Reviews

1 / 20
6.0
Good

Yvette,Nov 2024

BOS - ZRH

Food was not very good and the options were poor. The seat wasn't very comfortable. I would not choose to fly on this airline again. Their website was also difficult to navigate.
SWISS
7.5
Good
1,574 reviews
SWISS
7.5
Good
1,574 reviews

Comfort

7.4

Entertainment

6.7

Food

7.0

Overall

7.5

Crew

8.2

Boarding

7.6

Reviews

1 / 20
6.0
Good

Yvette,Nov 2024

BOS - ZRH

Food was not very good and the options were poor. The seat wasn't very comfortable. I would not choose to fly on this airline again. Their website was also difficult to navigate.
Turkish Airlines
7.3
Good
3,750 reviews
SWISS
7.5
Good
1,574 reviews

Comfort

7.4

Entertainment

6.7

Food

7.0

Overall

7.5

Crew

8.2

Boarding

7.6

Reviews

1 / 20
6.0
Good

Yvette,Nov 2024

BOS - ZRH

Food was not very good and the options were poor. The seat wasn't very comfortable. I would not choose to fly on this airline again. Their website was also difficult to navigate.
Lufthansa
6.7
Okay
6,970 reviews
SWISS
7.5
Good
1,574 reviews

Comfort

7.4

Entertainment

6.7

Food

7.0

Overall

7.5

Crew

8.2

Boarding

7.6

Reviews

1 / 20
6.0
Good

Yvette,Nov 2024

BOS - ZRH

Food was not very good and the options were poor. The seat wasn't very comfortable. I would not choose to fly on this airline again. Their website was also difficult to navigate.
British Airways
6.6
Okay
6,718 reviews
SWISS
7.5
Good
1,574 reviews

Comfort

7.4

Entertainment

6.7

Food

7.0

Overall

7.5

Crew

8.2

Boarding

7.6

Reviews

1 / 20
6.0
Good

Yvette,Nov 2024

BOS - ZRH

Food was not very good and the options were poor. The seat wasn't very comfortable. I would not choose to fly on this airline again. Their website was also difficult to navigate.

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 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$594Average$652FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$796Average$1,237FlexibilityNo cancel feeOn-time76%

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