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$470+ 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 8/24. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BEG
juil. 6 — juil. 131
dim. 7/6
dim. 7/13
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 juillet 1, 2025.

Round-trip from

$696
(United Airlines)

One-way from

$470
(United Airlines)

Popular in

June

Cheapest in

February

Average price

$1,130
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. 20% potential increase in price ($232 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($26 potential savings vs. average RT price).
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Average for round-trip flights in July 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 juillet 1, 2025.

This United Airlines deal was found by Cheapflights users on 6/30. 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.
dim. 11/307:00 amONT - BEG
2 stops20h 50mUnited Airlines
dim. 12/146:15 amBEG - ONT
2 stops23h 28mUnited Airlines
Deal found 6/30$696
This Booking.com deal was found by Cheapflights users on 7/1. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sam. 11/112:49 pmONT - BEG
2 stops20h 11mMultiple Airlines
sam. 11/1510:20 amBEG - ONT
2 stops22h 25mMultiple Airlines
Deal found 7/1$1,055
This Air Serbia deal was found by Cheapflights users on 6/30. 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.
lun. 8/2511:59 pmONT - BEG
1 stop19h 46mAir Serbia
lun. 9/87:45 amBEG - ONT
1 stop22h 44mAir Serbia
Deal found 6/30$1,080

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 juillet 1, 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

dim. 11/30

7:00 am-12:50 pm

2 stops20h 50m

Belgrade Nikola Tesla

dim. 12/14

6:15 am-8:43 pm

2 stops23h 28m

$696

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

sam. 11/1

12:49 pm-5:00 pm

2 stops20h 11m

Belgrade Nikola Tesla

sam. 11/15

10:20 am-11:45 pm

2 stops22h 25m

$1,055

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

lun. 8/25

11:59 pm-4:45 am

1 stop19h 46m

Belgrade Nikola Tesla

lun. 9/8

7:45 am-9:29 pm

1 stop22h 44m

$1,080

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

dim. 8/24

7:00 am-1:10 pm

2 stops21h 10m

$470

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

mar. 8/5

7:00 am-11:35 pm

2 stops31h 35m

$518

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

lun. 8/11

11:59 pm-4:45 am

1 stop19h 46m

$654

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

dim. 8/17

11:59 pm-4:45 am

1 stop19h 46m

$708

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/30

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 $1,175). 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.

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 juillet 1, 2025.
Read reviews from past customers who have flown United Airlines, JetBlue, and Air Serbia from Ontario to Belgrade. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,858 reviews

Overall

7.4

Comfort

7.3

Crew

8.1

Boarding

7.7

Entertainment

7.0

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,858 reviews
United Airlines
7.4
Good
8,858 reviews

Overall

7.4

Comfort

7.3

Crew

8.1

Boarding

7.7

Entertainment

7.0

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
JetBlue
7.3
Good
2,919 reviews
United Airlines
7.4
Good
8,858 reviews

Overall

7.4

Comfort

7.3

Crew

8.1

Boarding

7.7

Entertainment

7.0

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Air Serbia
6.3
Okay
197 reviews
United Airlines
7.4
Good
8,858 reviews

Overall

7.4

Comfort

7.3

Crew

8.1

Boarding

7.7

Entertainment

7.0

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

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 ($470), Air Serbia ($654), and JetBlue ($708).

  • 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 $1,175). 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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