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Slovenia

$425+ 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 5/15. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — LJU
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
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Cheap flight deals from Ontario to Slovenia

Cheapest flights from Ontario to Slovenia
Explore the most affordable flight options available from Ontario to Slovenia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 29, 2026.

This KAYAK deal was found by Cheapflights users on 1/28. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/105:15 am
ONT
-
LJU
3 stops23h 40m
Multiple Airlines
Fri 4/176:35 am
LJU
-
ONT
2 stops24h 15m
Multiple Airlines
Deal found 1/28$650
This KAYAK deal was found by Cheapflights users on 1/28. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/1011:59 pm
ONT
-
LJU
2 stops25h 56m
Lufthansa
Fri 4/176:35 am
LJU
-
ONT
2 stops25h 10m
Lufthansa
Deal found 1/28$657
This Trip.com deal was found by Cheapflights users on 1/27. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/110:20 pm
ONT
-
LJU
2 stops29h 00m
KLM
Tue 3/1712:50 pm
LJU
-
ONT
2 stops36h 23m
KLM
Deal found 1/27$735
This oojo deal was found by Cheapflights users on 1/27. 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 5/1612:19 pm
ONT
-
LJU
2 stops23h 16m
British Airways
Tue 5/265:05 pm
LJU
-
ONT
2 stops37h 46m
British Airways
Deal found 1/27$767
This oojo deal was found by Cheapflights users on 1/27. 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.
Fri 5/154:52 pm
ONT
-
LJU
2 stops17h 33m
British Airways
Wed 5/276:00 pm
LJU
-
ONT
2 stops34h 52m
British Airways
Deal found 1/27$782
This oojo deal was found by Cheapflights users on 1/27. 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.
Fri 5/154:52 pm
ONT
-
LJU
2 stops17h 33m
British Airways
Thu 5/286:25 pm
LJU
-
ONT
2 stops34h 27m
British Airways
Deal found 1/27$797
This Turkish Airlines deal was found by Cheapflights users on 1/27. 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.
Fri 3/1312:02 pm
ONT
-
LJU
2 stops36h 23m
Multiple Airlines
Fri 3/207:35 pm
LJU
-
ONT
2 stops36h 24m
Multiple Airlines
Deal found 1/27$940
This oojo deal was found by Cheapflights users on 1/28. 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.
Mon 4/65:02 pm
ONT
-
LJU
2 stops39h 13m
British Airways
Fri 4/109:15 pm
LJU
-
ONT
2 stops34h 20m
British Airways
Deal found 1/28$1,110
This British Airways deal was found by Cheapflights users on 1/27. 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.
Sun 10/410:56 am
ONT
-
LJU
2 stops18h 19m
British Airways
Sun 10/189:25 pm
LJU
-
ONT
2 stops29h 12m
British Airways
Deal found 1/27$1,134
This Turkish Airlines deal was found by Cheapflights users on 1/28. 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.
Thu 5/2112:01 pm
ONT
-
LJU
2 stops22h 19m
Multiple Airlines
Thu 6/49:40 am
LJU
-
ONT
2 stops45h 29m
Multiple Airlines
Deal found 1/28$1,549
This oojo deal was found by Cheapflights users on 1/27. 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.
Fri 9/411:25 pm
ONT
-
LJU
2 stops34h 55m
Turkish Airlines
Sat 9/198:15 pm
LJU
-
ONT
2 stops34h 14m
Turkish Airlines
Deal found 1/27$4,008

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 January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$650
(KAYAK)

One-way from

$425
(KLM)

Popular in

June

Cheapest in

February

Average price

$723
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.
Search Deals
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 ($279 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($50 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 January 29, 2026.
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

Tue 3/10

5:15 am-12:55 pm

3 stops23h 40m

Ljubljana Joze Pucnik

Fri 4/17

6:35 am-9:50 pm

2 stops24h 15m

$650

OntarioLjubljana

ONT - LJU

ONTLJU

Ontario

Tue 3/10

11:59 pm-9:55 am

2 stops25h 56m

Ljubljana Joze Pucnik

Fri 4/17

6:35 am-10:45 pm

2 stops25h 10m

$657

OntarioLjubljana

ONT - LJU

ONTLJU

Ontario

Sat 5/16

12:19 pm-8:35 pm

2 stops23h 16m

Ljubljana Joze Pucnik

Tue 5/26

5:05 pm-9:51 pm

2 stops37h 46m

$767

OntarioLjubljana

ONT - LJU

ONTLJU

Ontario

Fri 5/15

4:52 pm-7:25 pm

2 stops17h 33m

Ljubljana Joze Pucnik

Wed 5/27

6:00 pm-7:52 pm

2 stops34h 52m

$782

OntarioLjubljana

ONT - LJU

ONTLJU

Ontario

Fri 5/15

4:52 pm-7:25 pm

2 stops17h 33m

Ljubljana Joze Pucnik

Tue 5/26

5:05 pm-7:52 pm

2 stops35h 47m

$782

OntarioLjubljana

ONT - LJU

ONTLJU

Ontario

Fri 5/15

4:52 pm-7:25 pm

2 stops17h 33m

Ljubljana Joze Pucnik

Thu 5/28

6:25 pm-7:52 pm

2 stops34h 27m

$797

OntarioLjubljana

ONT - LJU

ONTLJU

Ontario

Fri 3/13

12:02 pm-8:25 am

2 stops36h 23m

Ljubljana Joze Pucnik

Fri 3/20

7:35 pm-11:59 pm

2 stops36h 24m

$940

OntarioLjubljana

ONT - LJU

ONTLJU

Ontario

Mon 4/6

5:02 pm-5:15 pm

2 stops39h 13m

Ljubljana Joze Pucnik

Fri 4/10

9:15 pm-10:35 pm

2 stops34h 20m

$1,110

OntarioLjubljana

ONT - LJU

ONTLJU

Ontario

Thu 5/21

12:01 pm-7:20 pm

2 stops22h 19m

Ljubljana Joze Pucnik

Thu 6/4

9:40 am-10:09 pm

2 stops45h 29m

$1,549

OntarioLjubljana

ONT - LJU

ONTLJU

Ontario

Fri 7/24

12:46 pm-7:25 pm

2 stops21h 39m

Ljubljana Joze Pucnik

Thu 8/6

6:25 pm-6:25 pm

2 stops33h 00m

$4,949

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Showing 1-10 of 12 results
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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, February is the cheapest month in which you can book a flight from Ontario to Slovenia (average of $515). Flying from Ontario to Slovenia in June is currently the most expensive (average of $1,233). 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 Lufthansa and British Airways fly from Ontario to Slovenia in about 23h 16m. The time it takes to get you to your destination can typically vary by up to 2h 40m. The distance between Ontario and Slovenia is about 6133 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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, February is the cheapest month in which you can book a flight from Ontario to Slovenia (average of $515). Flying from Ontario to Slovenia in June is currently the most expensive (average of $1,233). 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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