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Cheap flights from Ontario to Slovenia from $470

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Slovenia departing on 8/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Ontario to Slovenia

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
7:00 am - 9:15 am
ONT
-
LJU
17h 15m
2 stops
United Airlines Logo
6:25 am - 6:11 pm
LJU
-
ONT
20h 46m
2 stops
$932United Airlines
Thu, Aug 13 - Thu, Aug 20
United Airlines Logo
7:00 am - 12:35 pm
ONT
-
LJU
20h 35m
2 stops
United Airlines Logo
6:25 am - 8:01 pm
LJU
-
ONT
22h 36m
3 stops
$958United Airlines
Sun, Aug 16 - Wed, Sep 16
United Airlines Logo
4:20 pm - 12:35 pm
ONT
-
LJU
35h 15m
2 stops
United Airlines Logo
6:25 am - 6:11 pm
LJU
-
ONT
20h 46m
2 stops
$964United Airlines
Tue, Aug 4 - Thu, Aug 13
United Airlines Logo
5:00 am - 1:15 pm
ONT
-
LJU
23h 15m
2 stops
United Airlines Logo
6:25 am - 6:11 pm
LJU
-
ONT
20h 46m
2 stops
$970United Airlines
Mon, Aug 3 - Thu, Aug 13
United Airlines Logo
5:45 am - 12:35 pm
ONT
-
LJU
21h 50m
2 stops
United Airlines Logo
2:25 pm - 8:42 pm
LJU
-
ONT
39h 17m
2 stops
$980United Airlines
Tue, Jul 28 - Tue, Aug 4
United Airlines Logo
7:00 am - 9:15 am
ONT
-
LJU
17h 15m
2 stops
United Airlines Logo
2:05 pm - 8:01 pm
LJU
-
ONT
38h 56m
2 stops
$990United Airlines
Thu, Aug 27 - Mon, Sep 7
United Airlines Logo
5:00 am - 12:35 pm
ONT
-
LJU
22h 35m
2 stops
United Airlines Logo
6:55 am - 5:41 pm
LJU
-
ONT
19h 46m
2 stops
$995United Airlines
Tue, Sep 22 - Tue, Oct 6
United Airlines Logo
1:50 pm - 9:15 am
ONT
-
LJU
34h 25m
3 stops
United Airlines Logo
2:25 pm - 8:42 pm
LJU
-
ONT
39h 17m
2 stops
$1,005United Airlines
Tue, Jul 28 - Tue, Aug 4
Delta Logo
7:05 am - 11:20 am
ONT
-
LJU
19h 15m
2 stops
Delta Logo
6:00 am - 4:24 pm
LJU
-
ONT
19h 24m
2 stops
$1,046Delta
Tue, Jul 28 - Fri, Aug 7
United Airlines Logo
7:00 am - 12:35 pm
ONT
-
LJU
20h 35m
2 stops
United Airlines Logo
6:25 am - 6:11 pm
LJU
-
ONT
20h 46m
2 stops
$1,115United Airlines
Fri, Aug 28 - Mon, Sep 7

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Delta flights from Ontario to Slovenia

Our best Delta deals on Ontario to Slovenia flight tickets
Delta
Jul 28
ONT7:05 amOntario
19h 15m
2 stops
LJU11:20 amLjubljana Joze Pucnik
Aug 7
LJU6:00 amLjubljana Joze Pucnik
19h 24m
2 stops
ONT4:24 pmOntario
$1,046
Delta
Aug 28
ONT5:05 pmOntario
20h 50m
2 stops
LJU10:55 pmLjubljana Joze Pucnik
Sep 8
LJU6:00 amLjubljana Joze Pucnik
20h 20m
2 stops
ONT5:20 pmOntario
$1,126

United Airlines flights from Ontario to Slovenia

Our best United Airlines deals on Ontario to Slovenia flight tickets
United Airlines
Aug 13
ONT7:00 amOntario
17h 15m
2 stops
LJU9:15 amLjubljana Joze Pucnik
Aug 20
LJU6:25 amLjubljana Joze Pucnik
20h 46m
2 stops
ONT6:11 pmOntario
$932
United Airlines
Aug 16
ONT7:00 amOntario
20h 35m
2 stops
LJU12:35 pmLjubljana Joze Pucnik
Sep 16
LJU6:25 amLjubljana Joze Pucnik
22h 36m
3 stops
ONT8:01 pmOntario
$958
United Airlines
Aug 4
ONT4:20 pmOntario
35h 15m
2 stops
LJU12:35 pmLjubljana Joze Pucnik
Aug 13
LJU6:25 amLjubljana Joze Pucnik
20h 46m
2 stops
ONT6:11 pmOntario
$964

momondo 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, momondo users made 832,500 searches. Data last updated July 2, 2026.
Use the filters below to find and compare flights from Ontario to Slovenia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

OntarioLjubljana

ONT - LJU

ONTLJU

Ontario

Thu 8/13

7:00 am-9:15 am

2 stops17h 15m

Ljubljana Joze Pucnik

Thu 8/20

6:25 am-6:11 pm

2 stops20h 46m

$932

OntarioLjubljana

ONT - LJU

ONTLJU

Ontario

Sun 8/16

7:00 am-12:35 pm

2 stops20h 35m

Ljubljana Joze Pucnik

Wed 9/16

6:25 am-8:01 pm

3 stops22h 36m

$958

OntarioLjubljana

ONT - LJU

ONTLJU

Ontario

Tue 8/4

4:20 pm-12:35 pm

2 stops35h 15m

Ljubljana Joze Pucnik

Thu 8/13

6:25 am-6:11 pm

2 stops20h 46m

$964

OntarioLjubljana

ONT - LJU

ONTLJU

Ontario

Mon 8/3

5:00 am-1:15 pm

2 stops23h 15m

Ljubljana Joze Pucnik

Thu 8/13

6:25 am-6:11 pm

2 stops20h 46m

$970

OntarioLjubljana

ONT - LJU

ONTLJU

Ontario

Tue 7/28

5:45 am-12:35 pm

2 stops21h 50m

Ljubljana Joze Pucnik

Tue 8/4

2:25 pm-8:42 pm

2 stops39h 17m

$980

OntarioLjubljana

ONT - LJU

ONTLJU

Ontario

Thu 8/27

7:00 am-9:15 am

2 stops17h 15m

Ljubljana Joze Pucnik

Mon 9/7

2:05 pm-8:01 pm

2 stops38h 56m

$990

OntarioLjubljana

ONT - LJU

ONTLJU

Ontario

Tue 9/22

5:00 am-12:35 pm

2 stops22h 35m

Ljubljana Joze Pucnik

Tue 10/6

6:55 am-5:41 pm

2 stops19h 46m

$995

OntarioLjubljana

ONT - LJU

ONTLJU

Ontario

Tue 7/28

1:50 pm-9:15 am

3 stops34h 25m

Ljubljana Joze Pucnik

Tue 8/4

2:25 pm-8:42 pm

2 stops39h 17m

$1,005

OntarioLjubljana

ONT - LJU

ONTLJU

Ontario

Tue 7/28

7:05 am-11:20 am

2 stops19h 15m

Ljubljana Joze Pucnik

Fri 8/7

6:00 am-4:24 pm

2 stops19h 24m

$1,046

OntarioLjubljana

ONT - LJU

ONTLJU

Ontario

Fri 8/28

7:00 am-12:35 pm

2 stops20h 35m

Ljubljana Joze Pucnik

Mon 9/7

6:25 am-6:11 pm

2 stops20h 46m

$1,115

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 resultsSorted by cheapest first
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See travel insights to Slovenia from

How to get the cheapest flight ticket from Ontario to Slovenia

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Ontario to Slovenia?

United Airlines, Delta, and British Airways are the most popular carriers operating from Ontario to Slovenia

What airlines fly to Slovenia?

SWISS, Turkish Airlines and Lufthansa are the top three most popular airlines that fly to Slovenia from Ontario according to our data. SWISS is the first choice among our users, with 26% of people opting to fly with this airline when traveling to Slovenia. Keep in mind that there are 5 different airlines that fly to Slovenia on a routine basis, so you have a few additional options to choose from.

Cheap Ontario to Slovenia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Slovenia

Fastest flight time

18h 50m

Direct flights

None
The fastest flight from Ontario to Slovenia takes 18h 50m
There are no direct flights from Ontario to Slovenia. There are no popular flight routes from Ontario to Slovenia.
Search flight deals

Frequently asked questions about flying from Ontario to Slovenia

  • When did momondo last update prices for flights from Ontario Airport to Slovenia?

    Prices for flights from Ontario Airport to Slovenia are updated daily.

  • How old do you have to be to fly from Ontario Airport to Slovenia?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ontario Airport to Slovenia.

  • What documentation or ID do you need to fly to Slovenia?

    The necessary travel and health documents for your Slovenia trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Slovenia?

Finding the right flight to Slovenia from Ontario is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Slovenia quick and easy, saving you time and money.

Can I find flights from Ontario to Slovenia with flexible booking policies on momondo?

All flight searches from Ontario to Slovenia on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Ontario to Slovenia?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Ontario to Slovenia.

I’m not ready to book a flight from Ontario to Slovenia right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Slovenia from Ontario. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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