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$474+ 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 1/5. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BEG
Dec 20 — Dec 271
Sat 12/20
Sat 12/27
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 November 20, 2025.

This United Airlines deal was found by Cheapflights users on 11/19. 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 12/115:05 amONT - BEG
2 stops22h 45mUnited Airlines
Thu 12/256:25 amBEG - ONT
2 stops24h 27mUnited Airlines
Deal found 11/19$1,262
This British Airways deal was found by Cheapflights users on 11/20. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2710:50 amONT - BEG
2 stops21h 15mMultiple Airlines
Tue 1/2710:15 amBEG - ONT
2 stops21h 33mMultiple Airlines
Deal found 11/20$1,466
This United Airlines deal was found by Cheapflights users on 11/20. 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 12/2211:59 pmONT - BEG
2 stops28h 06mUnited Airlines
Mon 1/51:50 pmBEG - ONT
3 stops54h 28mUnited Airlines
Deal found 11/20$1,660
This United Airlines deal was found by Cheapflights users on 11/19. 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 11/206:05 amONT - BEG
2 stops21h 45mUnited Airlines
Thu 11/276:25 amBEG - ONT
2 stops20h 09mUnited Airlines
Deal found 11/19$2,023
This United Airlines deal was found by Cheapflights users on 11/19. 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 12/96:00 amONT - BEG
2 stops22h 05mUnited Airlines
Fri 1/91:50 pmBEG - ONT
2 stops18h 03mUnited Airlines
Deal found 11/19$2,113
This United Airlines deal was found by Cheapflights users on 11/19. 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 12/26:41 pmONT - BEG
2 stops57h 09mUnited Airlines
Wed 12/106:15 amBEG - ONT
2 stops39h 03mUnited Airlines
Deal found 11/19$2,538
This United Airlines deal was found by Cheapflights users on 11/19. 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 12/2111:59 pmONT - BEG
2 stops27h 51mUnited Airlines
Sun 1/41:50 pmBEG - ONT
2 stops41h 35mUnited Airlines
Deal found 11/19$3,619
This British Airways deal was found by Cheapflights users on 11/20. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2810:50 amONT - BEG
2 stops21h 15mMultiple Airlines
Mon 1/1210:15 amBEG - ONT
2 stops21h 33mMultiple Airlines
Deal found 11/20$3,621
This United Airlines deal was found by Cheapflights users on 11/20. 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 12/2510:42 amONT - BEG
2 stops41h 13mUnited Airlines
Sun 1/46:15 amBEG - ONT
2 stops20h 28mUnited Airlines
Deal found 11/20$5,131

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 November 20, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$562
(Delta)

One-way from

$474
(United Airlines)

Popular in

June

Cheapest in

February

Average price

$689
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
Search Deals
One-way flight from Ontario to Belgrade Nikola Tesla
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($224 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($24 potential savings vs. average RT price).
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Average for round-trip flights in November 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 November 20, 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 2/19

6:00 am-11:55 am

2 stops44h 55m

Belgrade Nikola Tesla

Mon 2/23

12:35 pm-11:53 pm

2 stops44h 18m

$562

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Mon 1/12

6:10 am-12:50 pm

2 stops21h 40m

Belgrade Nikola Tesla

Mon 1/26

1:50 pm-10:53 pm

2 stops18h 03m

$580

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Sun 1/11

6:10 am-12:50 pm

2 stops21h 40m

Belgrade Nikola Tesla

Sun 1/25

1:50 pm-10:53 pm

2 stops18h 03m

$580

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Sat 1/10

6:32 pm-12:50 pm

2 stops33h 18m

Belgrade Nikola Tesla

Sat 1/24

1:50 pm-10:53 pm

2 stops18h 03m

$585

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Thu 2/19

1:45 pm-12:55 pm

2 stops38h 10m

Belgrade Nikola Tesla

Mon 2/23

6:15 am-10:57 pm

2 stops25h 42m

$686

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Fri 2/20

6:00 am-12:55 pm

2 stops21h 55m

Belgrade Nikola Tesla

Fri 3/6

6:15 am-8:50 pm

2 stops23h 35m

$697

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Tue 2/17

6:00 am-1:05 pm

2 stops22h 05m

Belgrade Nikola Tesla

Tue 3/3

6:10 am-8:50 pm

2 stops23h 40m

$697

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Sat 2/21

6:00 am-12:55 pm

2 stops21h 55m

Belgrade Nikola Tesla

Sat 3/7

6:25 am-5:38 pm

2 stops20h 13m

$697

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Wed 2/18

8:00 am-12:50 pm

2 stops19h 50m

Belgrade Nikola Tesla

Wed 3/4

6:15 am-8:50 pm

2 stops23h 35m

$697

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Thu 4/2

11:55 am-11:55 am

2 stops39h 00m

Belgrade Nikola Tesla

Mon 4/6

12:35 pm-4:19 pm

2 stops36h 44m

$793

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/18

Showing 1-10 of 17 results
1
2
  • 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 $559). 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 21h 40m. Delta provides one of the quickest options available for as low as $580. 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 $559). 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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