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$520+ 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 8/10. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BEG
Jul 5 — Jul 121
Sat 7/5
Sat 7/12
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 June 30, 2025.

Round-trip from

$646
(United Airlines)

One-way from

$520
(United Airlines)

Popular in

June

Cheapest in

February

Average price

$1,159
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. 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 June 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 June 30, 2025.

This United Airlines deal was found by Cheapflights users on 6/28. 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 11/257:00 amONT - BEG
2 stops21h 05mUnited Airlines
Tue 12/96:05 amBEG - ONT
2 stops20h 41mUnited Airlines
Deal found 6/28$646
This United deal was found by Cheapflights users on 6/29. 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.
Wed 11/266:00 amONT - BEG
2 stops21h 50mMultiple Airlines
Wed 12/106:15 amBEG - ONT
2 stops20h 31mMultiple Airlines
Deal found 6/29$866
This Air Serbia deal was found by Cheapflights users on 6/28. 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.
Mon 9/2910:56 pmONT - BEG
1 stop20h 49mAir Serbia
Mon 10/137:45 amBEG - ONT
1 stop22h 44mAir Serbia
Deal found 6/28$1,009

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 June 30, 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

Tue 11/25

7:00 am-1:05 pm

2 stops21h 05m

Belgrade Nikola Tesla

Tue 12/9

6:05 am-5:46 pm

2 stops20h 41m

$646

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Wed 11/26

6:00 am-12:50 pm

2 stops21h 50m

Belgrade Nikola Tesla

Wed 12/10

6:15 am-5:46 pm

2 stops20h 31m

$866

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Mon 9/29

10:56 pm-4:45 am

1 stop20h 49m

Belgrade Nikola Tesla

Mon 10/13

7:45 am-9:29 pm

1 stop22h 44m

$1,009

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Sun 8/10

5:05 am-1:10 pm

2 stops23h 05m

$520

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Sun 8/10

11:59 pm-4:45 am

1 stop19h 46m

$654

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Tue 7/15

11:59 pm-1:20 pm

2 stops28h 21m

$2,789

OntarioBelgrade

ONT - BEG

ONTBEG

Ontario

Tue 7/15

10:53 am-5:10 pm

2 stops21h 17m

$2,944

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/29

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 $1,175). 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 Serbia

Get insights into the airlines that provide service to Serbia. 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 Serbia. Reviews last updated June 30, 2025.
Get a feel of what it's like to fly with LOT, United Airlines, and Air Serbia from Ontario to Serbia by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
LOT
7.6
Good
1,088 reviews

Boarding

7.6

Entertainment

7.0

Overall

7.6

Comfort

7.5

Food

7.2

Crew

8.2

Reviews

1 / 20
2.0
Mediocre

Hinesh,May 2025

LHR - WAW

Would not recommend this airline flight was delayed baggage was lost bad communication, our bag landed at the destination airport at 12 midday but did not arrive at the hotel till midnight no urgency at all this totally ruined the first 2 days of our trip worst airline I have used.
LOT
7.6
Good
1,088 reviews
LOT
7.6
Good
1,088 reviews

Boarding

7.6

Entertainment

7.0

Overall

7.6

Comfort

7.5

Food

7.2

Crew

8.2

Reviews

1 / 20
2.0
Mediocre

Hinesh,May 2025

LHR - WAW

Would not recommend this airline flight was delayed baggage was lost bad communication, our bag landed at the destination airport at 12 midday but did not arrive at the hotel till midnight no urgency at all this totally ruined the first 2 days of our trip worst airline I have used.
United Airlines
7.4
Good
8,852 reviews
LOT
7.6
Good
1,088 reviews

Boarding

7.6

Entertainment

7.0

Overall

7.6

Comfort

7.5

Food

7.2

Crew

8.2

Reviews

1 / 20
2.0
Mediocre

Hinesh,May 2025

LHR - WAW

Would not recommend this airline flight was delayed baggage was lost bad communication, our bag landed at the destination airport at 12 midday but did not arrive at the hotel till midnight no urgency at all this totally ruined the first 2 days of our trip worst airline I have used.
Air Serbia
6.3
Okay
197 reviews
LOT
7.6
Good
1,088 reviews

Boarding

7.6

Entertainment

7.0

Overall

7.6

Comfort

7.5

Food

7.2

Crew

8.2

Reviews

1 / 20
2.0
Mediocre

Hinesh,May 2025

LHR - WAW

Would not recommend this airline flight was delayed baggage was lost bad communication, our bag landed at the destination airport at 12 midday but did not arrive at the hotel till midnight no urgency at all this totally ruined the first 2 days of our trip worst airline I have used.

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.

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

    $520 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on Air Serbia and LOT, with prices starting from $654 and $2,789, respectively.

  • 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 $1,175). 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.

See more FAQs

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