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$469+ Cheap flights from Ontario (ONT) to Belgrade (BEG)

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 3/21. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BEG
Mar 6 — Mar 131
Fri 3/6
Fri 3/13
1 adult, Economy
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Cheap flight deals from Ontario to Belgrade

Cheapest flights from Ontario to Belgrade
Explore the most affordable flight options available from Ontario to Belgrade. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 4, 2026.

This United Airlines deal was found by Cheapflights users on 2/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/55:15 am
ONT
-
BEG
2 stops33h 35m
United Airlines
Mon 3/96:15 am
BEG
-
ONT
2 stops22h 35m
United Airlines
Deal found 2/3$586
This United Airlines deal was found by Cheapflights users on 2/4. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/3011:05 am
ONT
-
BEG
2 stops16h 50m
United Airlines
Mon 4/136:10 am
BEG
-
ONT
2 stops23h 26m
United Airlines
Deal found 2/4$636
This United Airlines deal was found by Cheapflights users on 2/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/1711:05 am
ONT
-
BEG
2 stops19h 40m
United Airlines
Thu 5/76:10 am
BEG
-
ONT
2 stops23h 26m
United Airlines
Deal found 2/2$637
This United Airlines deal was found by Cheapflights users on 2/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/2911:05 am
ONT
-
BEG
2 stops27h 50m
United Airlines
Sun 4/121:40 pm
BEG
-
ONT
2 stops41h 10m
United Airlines
Deal found 2/3$657
This United Airlines deal was found by Cheapflights users on 2/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/57:00 am
ONT
-
BEG
2 stops20h 25m
United Airlines
Tue 5/196:20 am
BEG
-
ONT
2 stops23h 16m
United Airlines
Deal found 2/3$706
This United Airlines deal was found by Cheapflights users on 2/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/2811:59 pm
ONT
-
BEG
2 stops38h 56m
United Airlines
Sat 4/116:10 am
BEG
-
ONT
2 stops24h 40m
United Airlines
Deal found 2/2$722
This United Airlines deal was found by Cheapflights users on 2/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/71:40 pm
ONT
-
BEG
2 stops25h 10m
United Airlines
Sat 3/216:25 am
BEG
-
ONT
2 stops19h 13m
United Airlines
Deal found 2/3$786
This United Airlines deal was found by Cheapflights users on 2/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/248:00 am
ONT
-
BEG
2 stops20h 05m
United Airlines
Tue 3/106:10 am
BEG
-
ONT
2 stops19h 31m
United Airlines
Deal found 2/2$787
This United Airlines deal was found by Cheapflights users on 2/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/241:50 pm
ONT
-
BEG
2 stops26h 00m
United Airlines
Sat 4/256:10 am
BEG
-
ONT
2 stops23h 26m
United Airlines
Deal found 2/1$807

Find flight deals from Ontario to Belgrade

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Belgrade (BEG). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 4, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$586
(United Airlines)

One-way from

$464
(United Airlines)

Popular in

June

Cheapest in

February

Average price

$657
Provider with most accurate pricing for Los Angeles-Belgrade Nikola Tesla flight deals.
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Provider most trusted by Cheapflights users for Los Angeles-Belgrade Nikola Tesla flights.
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From Ontario to Belgrade Nikola Tesla
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One-way flight from Ontario to Belgrade Nikola Tesla
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Highest demand for flights based on searches. 22% potential increase in price ($243 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($26 potential savings vs. average RT price).
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Average for round-trip flights in February 2026
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Belgrade 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 February 4, 2026.
Use the filters below to find and compare flights from Ontario to Belgrade that are best for you.

Fly from

Ontario

Fly to

Belgrade

Route

Depart

Return

Price

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Thu 3/5

5:15 am-11:50 pm

2 stops33h 35m

Belgrade Nikola Tesla

Mon 3/9

6:15 am-8:50 pm

2 stops22h 35m

$586

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Mon 4/20

11:05 am-12:55 pm

2 stops16h 50m

Belgrade Nikola Tesla

Thu 5/7

1:40 pm-10:59 pm

2 stops18h 19m

$586

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Tue 3/31

11:05 am-4:05 pm

2 stops20h 00m

Belgrade Nikola Tesla

Mon 4/13

6:10 am-8:36 pm

2 stops23h 26m

$636

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Fri 4/17

11:05 am-3:45 pm

2 stops19h 40m

Belgrade Nikola Tesla

Thu 5/7

6:10 am-8:36 pm

2 stops23h 26m

$637

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Sun 4/19

11:05 am-12:45 pm

2 stops16h 40m

Belgrade Nikola Tesla

Sun 5/10

5:50 am-5:52 pm

2 stops21h 02m

$637

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Sun 3/29

11:05 am-11:55 pm

2 stops27h 50m

Belgrade Nikola Tesla

Sun 4/12

1:40 pm-9:50 pm

2 stops41h 10m

$657

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Tue 5/5

7:00 am-12:25 pm

2 stops20h 25m

Belgrade Nikola Tesla

Tue 5/19

6:20 am-8:36 pm

2 stops23h 16m

$706

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Sat 3/21

11:59 pm-12:50 pm

2 stops28h 51m

$469

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Thu 3/19

6:00 am-11:50 pm

2 stops33h 50m

$488

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Fri 3/20

6:00 am-11:50 pm

2 stops33h 50m

$647

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/2

Showing 1-10 of 16 results
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Best time to book a flight from Ontario to Belgrade

Have a flexible travel schedule? Discover the best time to fly to Belgrade 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 Belgrade

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

Currently, December is the cheapest month in which you can book a flight from Ontario to Belgrade (average of $484). Flying from Ontario to Belgrade in June is currently the most expensive (average of $884). 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 Belgrade. 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 Ontario to Belgrade?

    A quick flight from Ontario to Belgrade can take about 33h 35m. United Airlines provides one of the quickest options available for as low as $586. The distance from Ontario to Belgrade is about 6378 mi.

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

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

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

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

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

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

    Currently, December is the cheapest month in which you can book a flight from Ontario to Belgrade (average of $484). Flying from Ontario to Belgrade in June is currently the most expensive (average of $884). 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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