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$820+ 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 9/3. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — LJU
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$820
(Gurufare)

Popular in

December

Cheapest in

April

Average price

$1,569
From Denver Intl to Slovenia
Search Deals
Highest demand for flights based on searches. 40% potential increase in price ($840 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 21% potential price decrease ($223 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 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 June 12, 2025.

This Gurufare deal was found by Cheapflights users on 6/12. 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 9/36:35 pmDEN - LJU
1 stop15h 15mBritish Airways
Wed 9/176:00 pmLJU - DEN
1 stop30h 25mBritish Airways
Deal found 6/12$820
This Turkish Airlines deal was found by Cheapflights users on 6/12. 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.
Sun 8/317:50 pmDEN - LJU
1 stop15h 25mTurkish Airlines
Fri 9/199:25 amLJU - DEN
1 stop16h 30mTurkish Airlines
Deal found 6/12$824
This Gurufare deal was found by Cheapflights users on 6/12. 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 9/34:15 pmDEN - LJU
1 stop12h 20mLufthansa
Fri 9/196:40 amLJU - DEN
1 stop16h 55mLufthansa
Deal found 6/12$954
This Ovago deal was found by Cheapflights users on 6/12. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/15:50 pmDEN - LJU
1 stop16h 45mSWISS
Fri 9/1910:50 amLJU - DEN
1 stop13h 30mSWISS
Deal found 6/12$959
This CheapOair deal was found by Cheapflights users on 6/12. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/29:40 amDEN - LJU
2 stops15h 45mMultiple Airlines
Thu 9/186:40 amLJU - DEN
2 stops17h 53mMultiple Airlines
Deal found 6/12$966
This Delta deal was found by Cheapflights users on 6/12. 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 9/27:20 amDEN - LJU
2 stops20h 15mDelta
Fri 9/1911:50 amLJU - DEN
2 stops18h 40mDelta
Deal found 6/12$991
This Emirates deal was found by Cheapflights users on 6/12. 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 Emirates is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/41:30 pmDEN - LJU
2 stops40h 00mEmirates
Sun 9/212:30 pmLJU - DEN
2 stops39h 29mEmirates
Deal found 6/12$2,175
This FlightHub deal was found by Cheapflights users on 6/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/119:40 amDEN - LJU
2 stops24h 05mBrussels Airlines
Mon 6/166:35 pmLJU - DEN
2 stops31h 45mBrussels Airlines
Deal found 6/10$2,305

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 June 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

Wed 9/3

6:35 pm-5:50 pm

1 stop15h 15m

Ljubljana Joze Pucnik

Wed 9/17

6:00 pm-4:25 pm

1 stop30h 25m

$820

DenverLjubljana

DEN - LJU

DENLJU

Denver Intl

Sun 8/31

7:50 pm-7:15 pm

1 stop15h 25m

Ljubljana Joze Pucnik

Fri 9/19

9:25 am-5:55 pm

1 stop16h 30m

$824

DenverLjubljana

DEN - LJU

DENLJU

Denver Intl

Wed 9/3

4:15 pm-12:35 pm

1 stop12h 20m

Ljubljana Joze Pucnik

Fri 9/19

6:40 am-3:35 pm

1 stop16h 55m

$954

DenverLjubljana

DEN - LJU

DENLJU

Denver Intl

Mon 9/1

5:50 pm-6:35 pm

1 stop16h 45m

Ljubljana Joze Pucnik

Fri 9/19

10:50 am-4:20 pm

1 stop13h 30m

$959

DenverLjubljana

DEN - LJU

DENLJU

Denver Intl

Tue 9/2

9:40 am-9:25 am

2 stops15h 45m

Ljubljana Joze Pucnik

Thu 9/18

6:40 am-4:33 pm

2 stops17h 53m

$966

DenverLjubljana

DEN - LJU

DENLJU

Denver Intl

Tue 9/2

11:59 pm-11:35 am

2 stops27h 36m

Ljubljana Joze Pucnik

Tue 9/16

12:20 pm-10:30 pm

2 stops18h 10m

$991

DenverLjubljana

DEN - LJU

DENLJU

Denver Intl

Thu 9/4

1:30 pm-1:30 pm

2 stops40h 00m

Ljubljana Joze Pucnik

Sun 9/21

2:30 pm-9:59 pm

2 stops39h 29m

$2,175

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

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 June 12, 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 June 12, 2025.
Emirates
8.1
Very good
3,264 reviews

Food

7.8

Boarding

8.1

Crew

8.3

Entertainment

8.2

Comfort

8.0

Overall

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Emirates
8.1
Very good
3,264 reviews
Emirates
8.1
Very good
3,264 reviews

Food

7.8

Boarding

8.1

Crew

8.3

Entertainment

8.2

Comfort

8.0

Overall

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Delta
8.0
Very good
7,950 reviews
Emirates
8.1
Very good
3,264 reviews

Food

7.8

Boarding

8.1

Crew

8.3

Entertainment

8.2

Comfort

8.0

Overall

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
SWISS
7.5
Good
1,623 reviews
Emirates
8.1
Very good
3,264 reviews

Food

7.8

Boarding

8.1

Crew

8.3

Entertainment

8.2

Comfort

8.0

Overall

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Turkish Airlines
7.3
Good
3,848 reviews
Emirates
8.1
Very good
3,264 reviews

Food

7.8

Boarding

8.1

Crew

8.3

Entertainment

8.2

Comfort

8.0

Overall

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Lufthansa
6.8
Okay
7,136 reviews
Emirates
8.1
Very good
3,264 reviews

Food

7.8

Boarding

8.1

Crew

8.3

Entertainment

8.2

Comfort

8.0

Overall

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.

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 $1,462). 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.

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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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$598Average$696FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$766Average$1,335FlexibilityNo cancel feeOn-time76%

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