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$658+ Cheap flights from Ontario (ONT) 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 5/30. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — LJU
Jan 7 — Jan 141
Wed 1/7
Wed 1/14
1 adult, Economy
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Cheap flight deals from Ontario to Slovenia

Best flights from Ontario to Slovenia
Discover carefully curated flight deals from Ontario to Slovenia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 8, 2025.

This oojo deal was found by Cheapflights users on 12/7. 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.
Thu 4/91:33 pmONT - LJU
2 stops21h 47mBritish Airways
Sun 4/199:25 pmLJU - ONT
2 stops33h 31mBritish Airways
Deal found 12/7$687
This oojo deal was found by Cheapflights users on 12/7. 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 5/161:33 pmONT - LJU
2 stops22h 07mBritish Airways
Sun 5/319:25 pmLJU - ONT
2 stops31h 37mBritish Airways
Deal found 12/7$839
This oojo deal was found by Cheapflights users on 12/7. 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.
Thu 4/91:33 pmONT - LJU
2 stops21h 47mBritish Airways
Mon 4/203:10 pmLJU - ONT
2 stops39h 46mBritish Airways
Deal found 12/7$864
This oojo deal was found by Cheapflights users on 12/7. 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.
Tue 5/195:02 pmONT - LJU
2 stops39h 48mBritish Airways
Tue 7/285:00 pmLJU - ONT
2 stops33h 34mBritish Airways
Deal found 12/7$4,564
This oojo deal was found by Cheapflights users on 12/7. 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.
Wed 5/2012:55 pmONT - LJU
2 stops19h 55mBritish Airways
Thu 7/307:00 pmLJU - ONT
2 stops35h 45mBritish Airways
Deal found 12/7$4,781

Find flight deals from Ontario to Slovenia

Keep the following information in mind while searching for Ontario to Slovenia flight deals. Data was last updated December 8, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$687
(oojo)

One-way from

$658
(oojo)

Popular in

June

Cheapest in

November

Average price

$838
Provider with most accurate pricing for Los Angeles-Ljubljana Joze Pucnik flight deals.
Search Deals
Provider most trusted by Cheapflights users for Los Angeles-Ljubljana Joze Pucnik flights.
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From Ontario to Slovenia
Search Deals
One-way flight from Ontario to Slovenia
Search Deals
Highest demand for flights based on searches. 25% potential increase in price ($306 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($62 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario 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 December 8, 2025.
Use the filters below to find and compare flights from Ontario to Slovenia that are best for you.

Fly from

Ontario

Fly to

Slovenia

Route

Depart

Return

Price

OntarioLjubljana

ONT - LJU

ONTLJU

Ontario

Thu 4/9

1:33 pm-8:20 pm

2 stops21h 47m

Ljubljana Joze Pucnik

Sun 4/19

9:25 pm-9:56 pm

2 stops33h 31m

$687

OntarioLjubljana

ONT - LJU

ONTLJU

Ontario

Sat 5/16

1:33 pm-8:40 pm

2 stops22h 07m

Ljubljana Joze Pucnik

Sun 5/31

9:25 pm-8:02 pm

2 stops31h 37m

$839

OntarioLjubljana

ONT - LJU

ONTLJU

Ontario

Thu 4/9

1:33 pm-8:20 pm

2 stops21h 47m

Ljubljana Joze Pucnik

Mon 4/20

3:10 pm-9:56 pm

2 stops39h 46m

$864

OntarioLjubljana

ONT - LJU

ONTLJU

Ontario

Tue 5/19

5:02 pm-5:50 pm

2 stops39h 48m

Ljubljana Joze Pucnik

Tue 7/28

5:00 pm-5:34 pm

2 stops33h 34m

$4,564

OntarioLjubljana

ONT - LJU

ONTLJU

Ontario

Wed 5/20

12:55 pm-5:50 pm

2 stops19h 55m

Ljubljana Joze Pucnik

Thu 7/30

7:00 pm-9:45 pm

2 stops35h 45m

$4,781

OntarioLjubljana

ONT - LJU

ONTLJU

Ontario

Sat 5/30

5:00 pm-8:40 pm

2 stops18h 40m

$658

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/6

Best time to book a flight from Ontario to Slovenia

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

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

Currently, November is the cheapest month in which you can book a flight from Ontario to Slovenia (average of $546). Flying from Ontario to Slovenia in June is currently the most expensive (average of $1,319). 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.

Related info for your journey

Find useful and relevant information for your journey from Ontario 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 Ontario to Slovenia?

    Ontario (ONT) is the airport you will fly out of if you book a flight from Ontario to Slovenia. It is only a 3.1 mi journey to Ontario (ONT) from Ontario’s city center.

  • How long is the flight from Ontario to Slovenia?

    Airlines like British Airways fly from Ontario to Slovenia in about 21h 47m. The time it takes to get you to your destination can typically vary by up to . The distance between Ontario and Slovenia is about 6133 mi.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from Ontario to Slovenia (average of $546). Flying from Ontario to Slovenia in June is currently the most expensive (average of $1,319). 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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