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$452+ 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 5/9. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BEG
Jan 29 — Feb 51
Thu 1/29
Thu 2/5
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 December 30, 2025.

This United Airlines deal was found by Cheapflights users on 12/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/295:05 amONT - BEG
2 stops22h 45mUnited Airlines
Fri 1/26:15 amBEG - ONT
2 stops20h 28mUnited Airlines
Deal found 12/28$4,539

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 December 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$584
(United Airlines)

One-way from

$452
(Delta)

Popular in

June

Cheapest in

September

Average price

$912
Provider with most accurate pricing for Ontario-Belgrade Nikola Tesla flight deals.
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Provider most trusted by Cheapflights users for Ontario-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
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($215 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($23 potential savings vs. average RT price).
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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 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 December 30, 2025.
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

1:50 pm-11:50 pm

2 stops25h 00m

Belgrade Nikola Tesla

Mon 3/9

6:15 am-5:35 pm

2 stops19h 20m

$584

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Wed 4/1

11:05 am-12:45 pm

2 stops16h 40m

Belgrade Nikola Tesla

Wed 4/15

6:10 am-8:36 pm

2 stops23h 26m

$584

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Fri 1/30

5:05 am-12:55 pm

2 stops22h 50m

Belgrade Nikola Tesla

Fri 2/13

6:15 am-8:07 pm

2 stops22h 52m

$584

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Fri 2/20

6:10 am-12:55 pm

2 stops21h 45m

Belgrade Nikola Tesla

Fri 3/6

6:15 am-8:50 pm

2 stops23h 35m

$584

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Tue 2/17

6:10 am-1:05 pm

2 stops21h 55m

Belgrade Nikola Tesla

Tue 3/3

6:10 am-8:50 pm

2 stops23h 40m

$584

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Wed 4/29

1:34 pm-4:05 pm

2 stops17h 31m

Belgrade Nikola Tesla

Wed 5/13

6:10 am-9:01 pm

2 stops23h 51m

$584

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Wed 2/18

7:55 am-12:50 pm

2 stops19h 55m

Belgrade Nikola Tesla

Wed 3/4

6:15 am-8:50 pm

2 stops23h 35m

$584

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Thu 1/29

5:05 am-12:50 pm

2 stops22h 45m

Belgrade Nikola Tesla

Sun 2/1

1:50 pm-10:53 pm

2 stops42h 03m

$605

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Mon 3/30

7:00 am-12:55 pm

2 stops20h 55m

Belgrade Nikola Tesla

Mon 4/13

6:10 am-5:47 pm

2 stops20h 37m

$634

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Sat 5/9

10:59 pm-12:00 pm

2 stops28h 01m

$452

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/29

Showing 1-10 of 21 results
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  • Most accurate provider: When it comes to deals on Ontario-Belgrade flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Ontario-Belgrade flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Ontario-Belgrade flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Belgrade flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Belgrade flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 $494). Flying from Ontario to Belgrade in June is currently the most expensive (average of $886). 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 25h. United Airlines provides one of the quickest options available for as low as $584. 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 $494). Flying from Ontario to Belgrade in June is currently the most expensive (average of $886). 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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