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Slovenia

$790+ Cheap flights from Colorado 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 10/14. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — LJU
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheap flight deals from Colorado to Slovenia

Keep the following information in mind while searching for Colorado to Slovenia flight deals. Data was last updated September 16, 2025.

Round-trip from

$790
(Mytrip)

Popular in

December

Cheapest in

April

Average price

$941
From Colorado to Slovenia
Search Deals
Highest demand for flights based on searches. 39% potential increase in price ($827 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 21% potential price decrease ($224 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
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Find flight deals from Colorado to Slovenia

Cheapest flights from Colorado to Slovenia
Explore the most affordable flight options available from Colorado to Slovenia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

This Mytrip deal was found by Cheapflights users on 9/14. 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.
Tue 10/1411:15 amDEN - LJU
3 stops24h 10mMultiple Airlines
Tue 10/216:35 pmLJU - DEN
3 stops27h 10mMultiple Airlines
Deal found 9/14$790
This FlightHub deal was found by Cheapflights users on 9/14. 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.
Tue 12/97:20 pmDEN - LJU
1 stop29h 05mTurkish Airlines
Tue 12/169:20 amLJU - DEN
1 stop16h 15mTurkish Airlines
Deal found 9/14$803
This CheapOair deal was found by Cheapflights users on 9/14. 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.
Mon 10/136:44 pmDEN - LJU
2 stops38h 31mBritish Airways
Mon 10/203:10 pmLJU - DEN
1 stop33h 15mBritish Airways
Deal found 9/14$811
This Cheapflightsfares deal was found by Cheapflights users on 9/14. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/911:15 amDEN - LJU
2 stops14h 40mLufthansa
Tue 12/1610:35 amLJU - DEN
1 stop13h 25mLufthansa
Deal found 9/14$886
This Mytrip deal was found by Cheapflights users on 9/14. 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.
Tue 12/91:25 pmDEN - LJU
3 stops35h 30mMultiple Airlines
Tue 12/162:55 pmLJU - DEN
3 stops31h 40mMultiple Airlines
Deal found 9/14$920
This FlightHub deal was found by Cheapflights users on 9/14. 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 10/117:50 pmDEN - LJU
1 stop28h 40mTurkish Airlines
Sat 10/182:05 pmLJU - DEN
1 stop35h 50mTurkish Airlines
Deal found 9/14$928
This Cheapflightsfares deal was found by Cheapflights users on 9/16. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/224:15 pmDEN - LJU
1 stop12h 20mLufthansa
Fri 11/1410:35 amLJU - DEN
2 stops20h 40mLufthansa
Deal found 9/16$935

Cheapflights Fare Finder

 
Customize your flight search to find flights from Colorado 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 September 16, 2025.
Use the filters below to find and compare flights from Colorado to Slovenia that are best for you.

Fly from

Colorado

Fly to

Slovenia

Route

Depart

Return

Price

DenverLjubljana

DEN - LJU

DENLJU

Denver Intl

Tue 10/14

6:35 pm-5:15 pm

1 stop14h 40m

Ljubljana Joze Pucnik

Tue 10/21

9:30 am-4:25 pm

2 stops38h 55m

$800

DenverLjubljana

DEN - LJU

DENLJU

Denver Intl

Tue 12/9

7:20 pm-8:25 am

1 stop29h 05m

Ljubljana Joze Pucnik

Tue 12/16

9:20 am-5:35 pm

1 stop16h 15m

$803

DenverLjubljana

DEN - LJU

DENLJU

Denver Intl

Mon 10/13

6:44 pm-5:15 pm

2 stops38h 31m

Ljubljana Joze Pucnik

Mon 10/20

3:10 pm-4:25 pm

1 stop33h 15m

$811

DenverLjubljana

DEN - LJU

DENLJU

Denver Intl

Tue 12/9

11:15 am-9:55 am

2 stops14h 40m

Ljubljana Joze Pucnik

Tue 12/16

10:35 am-4:00 pm

1 stop13h 25m

$886

DenverLjubljana

DEN - LJU

DENLJU

Denver Intl

Tue 12/9

1:25 pm-8:55 am

3 stops35h 30m

Ljubljana Joze Pucnik

Tue 12/16

2:55 pm-2:35 pm

3 stops31h 40m

$920

DenverLjubljana

DEN - LJU

DENLJU

Denver Intl

Sat 10/11

7:50 pm-8:30 am

1 stop28h 40m

Ljubljana Joze Pucnik

Sat 10/18

2:05 pm-5:55 pm

1 stop35h 50m

$928

DenverLjubljana

DEN - LJU

DENLJU

Denver Intl

Wed 10/22

4:15 pm-12:35 pm

1 stop12h 20m

Ljubljana Joze Pucnik

Fri 11/14

10:35 am-11:15 pm

2 stops20h 40m

$935

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Best time to book a flight from Colorado to Slovenia

Have a flexible travel schedule? Discover the best time to fly to Slovenia from Colorado 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 Colorado to Slovenia

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

Find hourly flight availability from Colorado 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 September 16, 2025.

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

Related info for your journey

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

  • How long is the flight from Colorado to Slovenia?

    There are many flights that can get you from Colorado to Slovenia in 14h 40m. Fly via Turkish Airlines, British Airways, or Lufthansa to get the fastest option. The distance between Colorado and Slovenia is about 5400 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Colorado 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 Colorado to Slovenia?

    Currently, February is the cheapest month in which you can book a flight from Colorado to Slovenia (average of $710). Flying from Colorado to Slovenia in June is currently the most expensive (average of $1,442). 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 Colorado 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 Colorado to Slovenia

Discover the top 2 airlines that operate flights from Colorado 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 September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$598Average$706FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$766Average$1,312FlexibilityNo cancel feeOn-time76%

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