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$462+ 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 12/28. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BEG
Nov 21 — Nov 281
Fri 11/21
Fri 11/28
1 adult, Economy
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Find 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 October 22, 2025.

This Delta deal was found by Cheapflights users on 10/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/276:00 amONT - BEG
2 stops32h 25mDelta
Fri 12/126:05 amBEG - ONT
2 stops20h 02mDelta
Deal found 10/20$563
This United Airlines deal was found by Cheapflights users on 10/20. 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 11/177:00 amONT - BEG
2 stops20h 55mUnited Airlines
Thu 12/46:25 amBEG - ONT
2 stops24h 24mUnited Airlines
Deal found 10/20$582
This Delta deal was found by Cheapflights users on 10/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2310:29 pmONT - BEG
2 stops28h 26mDelta
Thu 1/156:05 amBEG - ONT
2 stops24h 09mDelta
Deal found 10/20$663
This United Airlines deal was found by Cheapflights users on 10/20. 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 12/2811:59 pmONT - BEG
2 stops27h 51mUnited Airlines
Fri 1/166:15 amBEG - ONT
2 stops25h 38mUnited Airlines
Deal found 10/20$682
This Delta deal was found by Cheapflights users on 10/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/246:00 amONT - BEG
2 stops32h 25mDelta
Sun 1/186:05 amBEG - ONT
2 stops25h 33mDelta
Deal found 10/20$726
This United Airlines deal was found by Cheapflights users on 10/20. 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 12/251:40 pmONT - BEG
2 stops38h 15mUnited Airlines
Fri 1/161:50 pmBEG - ONT
2 stops18h 03mUnited Airlines
Deal found 10/20$831
This lol.travel deal was found by Cheapflights users on 10/21. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/2412:49 pmONT - BEG
2 stops19h 11mMultiple Airlines
Sun 12/710:20 amBEG - ONT
2 stops20h 55mMultiple Airlines
Deal found 10/21$1,152
This United Airlines deal was found by Cheapflights users on 10/21. 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.
Wed 12/175:05 amONT - BEG
2 stops22h 45mUnited Airlines
Sat 1/171:50 pmBEG - ONT
2 stops18h 03mUnited Airlines
Deal found 10/21$1,302
This United Airlines deal was found by Cheapflights users on 10/22. 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 12/185:05 amONT - BEG
2 stops46h 50mUnited Airlines
Fri 1/236:15 amBEG - ONT
2 stops25h 38mUnited Airlines
Deal found 10/22$1,360
This United Airlines deal was found by Cheapflights users on 10/21. 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 12/155:05 amONT - BEG
2 stops22h 45mUnited Airlines
Sun 1/41:50 pmBEG - ONT
2 stops41h 35mUnited Airlines
Deal found 10/21$1,396
This United Airlines deal was found by Cheapflights users on 10/21. 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 11/217:00 amONT - BEG
2 stops20h 55mUnited Airlines
Fri 12/56:15 amBEG - ONT
2 stops23h 27mUnited Airlines
Deal found 10/21$1,417

Cheap 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 October 22, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$563
(Delta)

One-way from

$462
(United Airlines)

Popular in

June

Cheapest in

February

Average price

$742
Provider with most accurate pricing for Ontario-Belgrade Nikola Tesla flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-Belgrade Nikola Tesla flights.
Search Deals
From Ontario to Belgrade Nikola Tesla
Search Deals
One-way flight from Ontario to Belgrade Nikola Tesla
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($227 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($24 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

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 October 22, 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 11/27

6:45 am-11:25 pm

2 stops31h 40m

Belgrade Nikola Tesla

Mon 12/8

6:05 am-10:47 pm

2 stops25h 42m

$563

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Wed 11/26

10:25 pm-11:55 am

2 stops28h 30m

Belgrade Nikola Tesla

Wed 12/10

6:05 am-5:07 pm

2 stops20h 02m

$563

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Thu 11/27

6:00 am-11:25 pm

2 stops32h 25m

Belgrade Nikola Tesla

Wed 12/10

6:05 am-5:07 pm

2 stops20h 02m

$563

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Thu 11/27

6:45 am-11:25 pm

2 stops31h 40m

Belgrade Nikola Tesla

Tue 12/9

6:05 am-5:07 pm

2 stops20h 02m

$563

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Mon 11/17

7:00 am-12:55 pm

2 stops20h 55m

Belgrade Nikola Tesla

Sat 12/6

6:25 am-10:49 pm

2 stops25h 24m

$582

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Mon 11/17

7:00 am-12:55 pm

2 stops20h 55m

Belgrade Nikola Tesla

Fri 12/5

6:15 am-10:49 pm

2 stops25h 34m

$582

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Thu 11/27

7:00 am-12:50 pm

2 stops20h 50m

Belgrade Nikola Tesla

Thu 12/11

6:25 am-8:42 pm

2 stops23h 17m

$582

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Tue 11/18

7:00 am-1:05 pm

2 stops21h 05m

Belgrade Nikola Tesla

Wed 12/3

6:15 am-10:49 pm

2 stops25h 34m

$582

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Sun 11/30

6:00 am-12:50 pm

2 stops21h 50m

Belgrade Nikola Tesla

Wed 12/10

6:15 am-10:49 pm

2 stops25h 34m

$582

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Mon 12/1

6:00 am-12:50 pm

2 stops21h 50m

Belgrade Nikola Tesla

Wed 12/10

6:15 am-10:49 pm

2 stops25h 34m

$582

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/20

Showing 1-10 of 24 results
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2
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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 $560). 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 20h 55m. Delta provides one of the quickest options available for as low as $582. The distance from Ontario to Belgrade is about 6378 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 $560). 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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