In terms of precipitation, rainfall in Serbia ranges from 1.6 - 4.0 inches per month. June is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Serbia when rainfall is around 1.6 in.

If weather is an important factor for your trip to Serbia, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 33.8 F).

How far in advance should I book a flight from Ontario to Serbia?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 25 days in advance, which can save you up to 31% on flights from Ontario to Serbia compared to booking the week you need them. Waiting 25 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $635. For sooner than that we have options available in the next 3 days from $772.

What is the cheapest month to fly from Ontario to Serbia?

The best pricing can be found in the month of February. Prices to Serbia from Ontario average $862. You can even find prices in February for less than $862, as users have found deals to Serbia from as low as $635. The month of June appears to be one of the more expensive times to travel to Serbia from Ontario. Flying in the targeted month can save you up to 27%.

What is the cheapest time of day to fly from ONT to RS?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ontario to Serbia as you normally would.

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.

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.

$493+ Flights from Ontario to Serbia

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Cheap flight deals from Ontario to Serbia

Round-trip from	$646 (United Airlines)
One-way from	$493 (United Airlines)
Popular in	June
Cheapest in	February
Average price	$856

From Ontario to Serbia

Search Deals

One-way flight from Ontario to Serbia

Search Deals

Highest demand for flights based on searches. 18% potential increase in price ($196 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($22 potential savings vs. average RT price).

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Average for round-trip flights in August 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 August 16, 2025.

Thu 11/137:00 amONT - BEG

2 stops20h 50mUnited Airlines

Thu 11/276:25 amBEG - ONT

2 stops20h 09mUnited Airlines

Deal found 8/15

$696

Tue 10/79:36 amONT - BEG

2 stops17h 59mUnited Airlines

Tue 10/216:10 amBEG - ONT

2 stops23h 14mUnited Airlines

Deal found 8/15

$726

Thu 8/145:05 amONT - BEG

2 stops22h 35mUnited Airlines

Thu 8/216:10 amBEG - ONT

2 stops24h 15mUnited Airlines

Deal found 8/13

$745

Fri 8/226:00 amONT - BEG

2 stops21h 55mUnited Airlines

Tue 8/266:10 amBEG - ONT

2 stops23h 23mUnited Airlines

Deal found 8/16

$746

Mon 9/157:00 amONT - BEG

2 stops20h 35mUnited Airlines

Thu 10/26:10 amBEG - ONT

2 stops20h 30mUnited Airlines

Deal found 8/14

$755

Thu 9/46:04 amONT - BEG

2 stops21h 36mUnited Airlines

Thu 9/186:10 amBEG - ONT

2 stops23h 33mUnited Airlines

Deal found 8/14

$775

Fri 11/145:05 amONT - BEG

2 stops22h 50mUnited Airlines

Fri 11/281:50 pmBEG - ONT

2 stops18h 01mUnited Airlines

Deal found 8/16

$776

Wed 9/176:04 amONT - BEG

2 stops22h 06mUnited Airlines

Wed 10/156:10 amBEG - ONT

2 stops23h 14mUnited Airlines

Deal found 8/14

$780

Fri 9/56:04 amONT - BEG

2 stops21h 51mUnited Airlines

Fri 9/196:10 amBEG - ONT

2 stops23h 23mUnited Airlines

Deal found 8/15

$801

Mon 11/176:00 amONT - BEG

2 stops21h 50mUnited Airlines

Mon 12/11:50 pmBEG - ONT

2 stops18h 01mUnited Airlines

Deal found 8/16

$824

Fri 9/56:04 amONT - BEG

2 stops21h 51mUnited Airlines

Sun 9/146:10 amBEG - ONT

2 stops23h 23mUnited Airlines

Deal found 8/14

$835

Best flights from Ontario to Serbia
Discover carefully curated flight deals from Ontario to Serbia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 16, 2025.

Wed 1/1410:40 amONT - BEG

2 stops17h 10mUnited Airlines

Wed 1/286:15 amBEG - ONT

2 stops23h 02mUnited Airlines

Deal found 8/14

$646

Thu 2/1210:40 amONT - BEG

2 stops17h 10mUnited Airlines

Thu 2/266:25 amBEG - ONT

2 stops23h 20mUnited Airlines

Deal found 8/16

$696

Thu 11/137:00 amONT - BEG

2 stops20h 50mUnited Airlines

Thu 11/276:25 amBEG - ONT

2 stops20h 09mUnited Airlines

Deal found 8/15

$696

Fri 1/1610:40 amONT - BEG

2 stops17h 15mUnited Airlines

Fri 1/301:50 pmBEG - ONT

2 stops19h 35mUnited Airlines

Deal found 8/16

$696

Tue 10/79:36 amONT - BEG

2 stops17h 59mUnited Airlines

Tue 10/216:10 amBEG - ONT

2 stops23h 14mUnited Airlines

Deal found 8/15

$726

Mon 9/157:00 amONT - BEG

2 stops20h 35mUnited Airlines

Thu 10/26:10 amBEG - ONT

2 stops20h 30mUnited Airlines

Deal found 8/14

$755

Thu 9/46:04 amONT - BEG

2 stops21h 36mUnited Airlines

Thu 9/186:10 amBEG - ONT

2 stops23h 33mUnited Airlines

Deal found 8/14

$775

Fri 11/145:05 amONT - BEG

2 stops22h 50mUnited Airlines

Fri 11/281:50 pmBEG - ONT

2 stops18h 01mUnited Airlines

Deal found 8/16

$776

Wed 9/176:04 amONT - BEG

2 stops22h 06mUnited Airlines

Wed 10/156:10 amBEG - ONT

2 stops23h 14mUnited Airlines

Deal found 8/14

$780

Fri 9/56:04 amONT - BEG

2 stops21h 51mUnited Airlines

Fri 9/196:10 amBEG - ONT

2 stops23h 23mUnited Airlines

Deal found 8/15

$801

Wed 10/16:00 amONT - BEG

2 stops22h 10mUnited Airlines

Wed 10/81:40 pmBEG - ONT

2 stops18h 12mUnited Airlines

Deal found 8/15

$806

Last-minute flights from Ontario to Serbia
Discover last-minute flight deals from Ontario to Serbia. Data last updated August 16, 2025 and is based on user searches.

Thu 8/145:05 amONT - BEG

2 stops22h 35mUnited Airlines

Thu 8/216:10 amBEG - ONT

2 stops24h 15mUnited Airlines

Deal found 8/13

$745

Fri 8/226:00 amONT - BEG

2 stops21h 55mUnited Airlines

Tue 8/266:10 amBEG - ONT

2 stops23h 23mUnited Airlines

Deal found 8/16

$746

Sat 8/235:10 amONT - BEG

2 stops22h 30mUnited Airlines

Sun 8/316:10 amBEG - ONT

2 stops23h 23mUnited Airlines

Deal found 8/14

$1,268

Mon 8/257:00 amONT - BEG

2 stops20h 35mUnited Airlines

Fri 8/296:10 amBEG - ONT

2 stops20h 19mUnited Airlines

Deal found 8/15

$1,981

Tue 8/266:04 amONT - BEG

2 stops21h 31mUnited Airlines

Tue 9/166:10 amBEG - ONT

2 stops20h 27mUnited Airlines

Deal found 8/14

$1,410

Thu 9/46:04 amONT - BEG

2 stops21h 36mUnited Airlines

Thu 9/186:10 amBEG - ONT

2 stops23h 33mUnited Airlines

Deal found 8/14

$775

Fri 9/56:04 amONT - BEG

2 stops21h 51mUnited Airlines

Fri 9/196:10 amBEG - ONT

2 stops23h 23mUnited Airlines

Deal found 8/15

$801

Fri 9/56:04 amONT - BEG

2 stops21h 51mUnited Airlines

Sun 9/146:10 amBEG - ONT

2 stops23h 23mUnited Airlines

Deal found 8/14

$835

Mon 9/157:00 amONT - BEG

2 stops20h 35mUnited Airlines

Thu 10/26:10 amBEG - ONT

2 stops20h 30mUnited Airlines

Deal found 8/14

$755

Mon 9/157:00 amONT - BEG

2 stops20h 35mUnited Airlines

Mon 9/296:10 amBEG - ONT

2 stops20h 30mUnited Airlines

Deal found 8/15

$866

Mon 9/157:00 amONT - BEG

3 stops23h 45mMultiple Airlines

Thu 10/26:10 amBEG - ONT

2 stops25h 42mMultiple Airlines

Deal found 8/14

$880

Mon 9/157:00 amONT - BEG

3 stops23h 45mMultiple Airlines

Mon 9/291:55 pmBEG - ONT

2 stops36h 45mMultiple Airlines

Deal found 8/15

$925

One-way flights from Ontario to Serbia
Search for one-way flight options from Ontario to Serbia. Find affordable one-way fares based on user searches. Data last updated August 16, 2025.

Sun 11/25:00 amONT - BEG

2 stops21h 50mUnited Airlines

Deal found 8/14

$493

Sat 10/186:36 pmONT - BEG

2 stops56h 59mUnited Airlines

Deal found 8/14

$515

Sat 11/17:00 amONT - BEG

2 stops21h 55mUnited Airlines

Deal found 8/14

$543

Fri 8/225:10 amONT - BEG

2 stops22h 45mUnited Airlines

Deal found 8/14

$561

Tue 11/45:05 amONT - BEG

3 stops23h 00mUnited Airlines

Deal found 8/14

$816

Fri 8/2211:59 pmONT - BEG

1 stop25h 26mJetBlue

Deal found 8/14

$885

Sat 9/1312:47 pmONT - BEG

2 stops19h 23mMultiple Airlines

Deal found 8/14

$6,624

Fly from

Fly to

Route

Depart

Return

Price

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Wed 1/14

10:40 am-12:50 pm

2 stops17h 10m

Belgrade Nikola Tesla

Wed 1/28

6:15 am-8:17 pm

2 stops23h 02m

$646

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Thu 2/12

10:40 am-12:50 pm

2 stops17h 10m

Belgrade Nikola Tesla

Thu 2/26

6:25 am-8:45 pm

2 stops23h 20m

$696

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Thu 11/13

7:00 am-12:50 pm

2 stops20h 50m

Belgrade Nikola Tesla

Thu 11/27

6:25 am-5:34 pm

2 stops20h 09m

$696

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Fri 1/16

10:40 am-12:55 pm

2 stops17h 15m

Belgrade Nikola Tesla

Fri 1/30

1:50 pm-12:25 am

2 stops19h 35m

$696

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Tue 10/7

9:36 am-12:35 pm

2 stops17h 59m

Belgrade Nikola Tesla

Tue 10/21

6:10 am-8:24 pm

2 stops23h 14m

$726

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Mon 9/15

7:00 am-12:35 pm

2 stops20h 35m

Belgrade Nikola Tesla

Thu 10/2

6:10 am-5:40 pm

2 stops20h 30m

$755

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Thu 9/4

6:04 am-12:40 pm

2 stops21h 36m

Belgrade Nikola Tesla

Thu 9/18

6:10 am-8:43 pm

2 stops23h 33m

$775

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Fri 11/14

5:05 am-12:55 pm

2 stops22h 50m

Belgrade Nikola Tesla

Fri 11/28

1:50 pm-10:51 pm

2 stops18h 01m

$776

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Wed 9/17

6:04 am-1:10 pm

2 stops22h 06m

Belgrade Nikola Tesla

Wed 10/15

6:10 am-8:24 pm

2 stops23h 14m

$780

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Fri 9/5

6:04 am-12:55 pm

2 stops21h 51m

Belgrade Nikola Tesla

Fri 9/19

6:10 am-8:33 pm

2 stops23h 23m

$801

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/14

Showing 1-10 of 21 results

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, January is the cheapest month in which you can book a flight from Ontario to Serbia (average of $688). Flying from Ontario to Serbia in June is currently the most expensive (average of $1,174). 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

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.
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, January is the cheapest month in which you can book a flight from Ontario to Serbia (average of $688). Flying from Ontario to Serbia in June is currently the most expensive (average of $1,174). 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

Browse thousands of different options on Cheapflights for your next trip

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$493+ 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 11/5. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Ontario to Serbia with Cheapflights

1. Tell us where you want to go

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3. Compare prices and book

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 August 16, 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Ontario to Serbia

Cheapest flights from Ontario to SerbiaExplore 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 August 16, 2025.

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 August 16, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ontario to Serbia that are best for you.

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.

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?

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?

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

How can I find direct flights from Ontario to Serbia?

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

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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Ontario to Serbia

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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 August 16, 2025.