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$493+ 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 8/27. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BEG
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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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 June 12, 2025.

Round-trip from

$723
(United Airlines)

One-way from

$493
(United Airlines)

Popular in

June

Cheapest in

February

Average price

$1,156
From Ontario to Belgrade Nikola Tesla
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One-way flight from Ontario to Belgrade Nikola Tesla
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Highest demand for flights based on searches. 21% potential increase in price ($233 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($26 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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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 June 12, 2025.

This United Airlines deal was found by Cheapflights users on 6/10. 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 12/106:00 amONT - BEG
2 stops21h 50mUnited Airlines
Wed 12/246:15 amBEG - ONT
2 stops23h 02mUnited Airlines
Deal found 6/10$643
This British Airways deal was found by Cheapflights users on 6/12. 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.
Wed 11/1212:53 pmONT - BEG
2 stops19h 07mMultiple Airlines
Wed 11/2610:20 amBEG - ONT
2 stops22h 25mMultiple Airlines
Deal found 6/12$877
This Delta deal was found by Cheapflights users on 6/11. 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.
Sun 7/275:09 pmONT - BEG
2 stops20h 46mDelta
Thu 8/76:00 amBEG - ONT
2 stops20h 16mDelta
Deal found 6/11$950
This Air Serbia deal was found by Cheapflights users on 6/11. 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 Air Serbia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/910:56 pmONT - BEG
1 stop20h 49mAir Serbia
Tue 9/237:45 amBEG - ONT
1 stop22h 44mAir Serbia
Deal found 6/11$1,042

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 June 12, 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

Wed 8/6

7:00 am-1:10 pm

2 stops21h 10m

Belgrade Nikola Tesla

Tue 9/16

6:10 am-8:43 pm

2 stops23h 33m

$723

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Sun 7/27

5:09 pm-10:55 pm

2 stops20h 46m

Belgrade Nikola Tesla

Thu 8/7

6:00 am-5:16 pm

2 stops20h 16m

$950

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Wed 7/30

12:46 pm-5:10 pm

2 stops19h 24m

Belgrade Nikola Tesla

Wed 8/13

10:30 am-10:48 pm

2 stops21h 18m

$957

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Tue 9/9

10:56 pm-4:45 am

1 stop20h 49m

Belgrade Nikola Tesla

Tue 9/23

7:45 am-9:29 pm

1 stop22h 44m

$1,042

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Wed 8/27

7:00 am-1:10 pm

2 stops21h 10m

$493

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Sun 7/13

11:59 pm-4:45 am

1 stop19h 46m

$654

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Sat 7/5

7:00 am-5:50 pm

2 stops25h 50m

$671

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Thu 7/3

10:05 pm-11:55 am

2 stops28h 50m

$692

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Tue 7/8

11:59 pm-4:45 am

1 stop19h 46m

$1,063

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

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, January is the cheapest month in which you can book a flight from Ontario to Belgrade (average of $688). Flying from Ontario to Belgrade in June is currently the most expensive (average of $1,167). 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.

Rainfall in Belgrade by month

Plan your trip to Belgrade by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Belgrade 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 Belgrade when rainfall is around 1.6 in.

Temperature in Belgrade by month

Plan your trip to Belgrade by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Belgrade, 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).

Reviews of airlines servicing Belgrade

Get insights into the airlines that provide service to Belgrade. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Belgrade. Reviews last updated June 12, 2025.
Get a feel of what it's like to fly with Delta, United Airlines and Air Serbia from Ontario to Belgrade by reading reviews from past customers. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,950 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,790 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air Serbia
6.3
Okay
196 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

  • What are the cheapest airlines to fly from Ontario to Belgrade one-way?

    The cheapest airlines for a one-way flight from Ontario to Belgrade are United Airlines ($493), Air Serbia ($654), and Delta ($692).

  • 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, January is the cheapest month in which you can book a flight from Ontario to Belgrade (average of $688). Flying from Ontario to Belgrade in June is currently the most expensive (average of $1,167). 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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