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$463+ Cheap flights from Ontario (ONT) to Serbia

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 1/13. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BEG
Nov 15 — Nov 221
Sat 11/15
Sat 11/22
1 adult, Economy
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Cheap flight deals from Ontario to Serbia

Keep the following information in mind while searching for Ontario to Serbia flight deals. Data was last updated October 16, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$581
(United Airlines)

One-way from

$463
(United Airlines)

Popular in

June

Cheapest in

February

Average price

$742
Provider with most accurate pricing for Los Angeles-Belgrade Nikola Tesla flight deals.
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From Ontario to Serbia
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One-way flight from Ontario to Serbia
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Highest demand for flights based on searches. 21% potential increase in price ($227 potential increase over avg. RT price).
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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 October 2025
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Find flight deals from Ontario to Serbia

Cheapest flights from Ontario to Serbia
Explore the most affordable flight options available from Ontario to Serbia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 16, 2025.

This United Airlines deal was found by Cheapflights users on 10/15. 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 11/147:00 amONT - BEG
2 stops20h 55mUnited Airlines
Fri 11/216:15 amBEG - ONT
2 stops25h 16mUnited Airlines
Deal found 10/15$581
This United Airlines deal was found by Cheapflights users on 10/15. 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 11/97:00 amONT - BEG
2 stops20h 55mUnited Airlines
Sun 11/161:50 pmBEG - ONT
2 stops18h 01mUnited Airlines
Deal found 10/15$731
This United Airlines deal was found by Cheapflights users on 10/15. 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
Sat 1/101:50 pmBEG - ONT
2 stops42h 03mUnited Airlines
Deal found 10/15$1,152
This United Airlines deal was found by Cheapflights users on 10/15. 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 11/157:00 amONT - BEG
2 stops20h 55mUnited Airlines
Sat 11/296:25 amBEG - ONT
2 stops23h 08mUnited Airlines
Deal found 10/15$1,316
This United deal was found by Cheapflights users on 10/15. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/125:05 amONT - BEG
2 stops22h 40mMultiple Airlines
Sat 1/101:50 pmBEG - ONT
2 stops40h 08mMultiple Airlines
Deal found 10/15$1,368
This United Airlines deal was found by Cheapflights users on 10/14. 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 12/265:05 amONT - BEG
2 stops22h 50mUnited Airlines
Tue 1/66:10 amBEG - ONT
2 stops20h 41mUnited Airlines
Deal found 10/14$1,420
This Orbitz deal was found by Cheapflights users on 10/15. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1112:46 pmONT - BEG
2 stops19h 14mMultiple Airlines
Fri 12/2610:20 amBEG - ONT
2 stops20h 54mMultiple Airlines
Deal found 10/15$1,468
This United Airlines deal was found by Cheapflights users on 10/16. 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 11/166:38 pmONT - BEG
2 stops33h 17mUnited Airlines
Sun 11/306:15 amBEG - ONT
2 stops39h 22mUnited Airlines
Deal found 10/16$1,529
This United Airlines deal was found by Cheapflights users on 10/15. 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 10/169:36 amONT - BEG
2 stops18h 04mUnited Airlines
Thu 10/236:10 amBEG - ONT
2 stops20h 13mUnited Airlines
Deal found 10/15$1,826
This United Airlines deal was found by Cheapflights users on 10/15. 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 12/2411:59 pmONT - BEG
2 stops51h 56mUnited Airlines
Fri 1/26:15 amBEG - ONT
2 stops25h 10mUnited Airlines
Deal found 10/15$2,035

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Serbia 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 16, 2025.
Use the filters below to find and compare flights from Ontario to Serbia that are best for you.

Fly from

Ontario

Fly to

Serbia

Route

Depart

Return

Price

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Fri 11/14

7:00 am-12:55 pm

2 stops20h 55m

Belgrade Nikola Tesla

Fri 11/21

6:15 am-10:31 pm

2 stops25h 16m

$581

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Sat 1/17

6:00 am-12:55 pm

2 stops21h 55m

Belgrade Nikola Tesla

Sat 1/31

1:50 pm-10:53 pm

2 stops18h 03m

$582

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Fri 2/13

6:00 am-12:55 pm

2 stops21h 55m

Belgrade Nikola Tesla

Fri 2/27

1:50 pm-10:57 pm

2 stops18h 07m

$582

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Wed 3/18

1:45 pm-5:05 pm

2 stops19h 20m

Belgrade Nikola Tesla

Wed 4/1

6:15 am-10:26 pm

2 stops25h 11m

$621

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Mon 2/16

6:00 am-12:50 pm

2 stops21h 50m

Belgrade Nikola Tesla

Mon 3/2

1:50 pm-10:57 pm

2 stops18h 07m

$657

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Thu 4/2

7:00 am-12:40 pm

2 stops20h 40m

Belgrade Nikola Tesla

Mon 4/6

1:40 pm-6:00 pm

2 stops37h 20m

$703

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Tue 4/14

7:00 am-12:40 pm

2 stops20h 40m

Belgrade Nikola Tesla

Tue 4/28

6:15 am-10:45 pm

2 stops25h 30m

$707

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Sun 11/9

6:00 am-12:55 pm

2 stops21h 55m

Belgrade Nikola Tesla

Sun 11/16

1:50 pm-10:51 pm

2 stops18h 01m

$731

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Sun 2/15

6:00 am-12:50 pm

2 stops21h 50m

Belgrade Nikola Tesla

Sun 3/1

6:15 am-9:19 pm

2 stops24h 04m

$733

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Tue 1/13

6:00 am-1:05 pm

2 stops22h 05m

$463

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/16

Best time to book a flight from Ontario to Serbia

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

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

Currently, December is the cheapest month in which you can book a flight from Ontario to Serbia (average of $560). Flying from Ontario to Serbia 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 Serbia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ontario to Serbia?

    Ontario (ONT), located 3.1 mi from the city center, is the airport you fly out of when you book flights from Ontario to Serbia.

  • How long is the flight from Ontario to Serbia?

    United Airlines can get you from Ontario to Serbia in just under 20h 55m. Your travel time can differ by up to . Ontario and Serbia are separated by a distance of 6378 mi.

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

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

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

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

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

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

    Currently, December is the cheapest month in which you can book a flight from Ontario to Serbia (average of $560). Flying from Ontario to Serbia 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.

See more FAQs

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