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$493+ Cheap flights from Ontario (ONT) to Brussels

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 8/26. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BRU
Aug 25 — Sep 11
Mon 8/25
Mon 9/1
1 adult, Economy
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Cheap flight deals from Ontario to Brussels

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Brussels (BR1). 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 August 20, 2025.

Round-trip from

$606
(United Airlines)

One-way from

$493
(United Airlines)

Popular in

June

Cheapest in

March

Average price

$691
From Ontario to Brussels
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One-way flight from Ontario to Brussels
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Highest demand for flights based on searches. 20% potential increase in price ($200 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($25 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 Brussels

Cheapest flights from Ontario to Brussels
Explore the most affordable flight options available from Ontario to Brussels. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 20, 2025.

This United Airlines deal was found by Cheapflights users on 8/19. 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 11/37:00 amONT - BRU
1 stop16h 55mUnited Airlines
Fri 11/1410:10 amBRU - ONT
1 stop21h 21mUnited Airlines
Deal found 8/19$606
This United Airlines deal was found by Cheapflights users on 8/19. 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 11/127:00 amONT - BRU
1 stop16h 55mUnited Airlines
Sun 11/1610:00 amBRU - ONT
2 stops41h 36mUnited Airlines
Deal found 8/19$633
This United Airlines deal was found by Cheapflights users on 8/19. 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 11/17:00 amONT - BRU
2 stops40h 50mUnited Airlines
Sun 11/1610:00 amBRU - ONT
2 stops41h 36mUnited Airlines
Deal found 8/19$640
This United Airlines deal was found by Cheapflights users on 8/18. 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 - BRU
1 stop16h 55mUnited Airlines
Sun 11/2310:10 amBRU - ONT
1 stop21h 21mUnited Airlines
Deal found 8/18$656
This Air Canada deal was found by Cheapflights users on 8/19. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/127:02 amONT - BRU
2 stops16h 03mMultiple Airlines
Tue 10/2110:00 amBRU - ONT
2 stops21h 30mMultiple Airlines
Deal found 8/19$676
This Delta deal was found by Cheapflights users on 8/18. 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.
Wed 8/207:05 amONT - BRU
2 stops16h 35mDelta
Tue 8/266:10 amBRU - ONT
2 stops18h 58mDelta
Deal found 8/18$705
This United Airlines deal was found by Cheapflights users on 8/19. 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 10/317:00 amONT - BRU
1 stop16h 55mUnited Airlines
Sun 11/1610:10 amBRU - ONT
1 stop21h 21mUnited Airlines
Deal found 8/19$706
This United Airlines deal was found by Cheapflights users on 8/20. 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 10/17:02 amONT - BRU
1 stop16h 58mUnited Airlines
Tue 10/1410:00 amBRU - ONT
2 stops45h 30mUnited Airlines
Deal found 8/20$743
This Air Canada deal was found by Cheapflights users on 8/19. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/15:05 amONT - BRU
3 stops18h 00mMultiple Airlines
Tue 10/149:40 amBRU - ONT
2 stops19h 44mMultiple Airlines
Deal found 8/19$779
This United Airlines deal was found by Cheapflights users on 8/18. 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 11/307:00 amONT - BRU
1 stop16h 55mUnited Airlines
Tue 1/610:10 amBRU - ONT
1 stop21h 16mUnited Airlines
Deal found 8/18$786
This Air Canada deal was found by Cheapflights users on 8/18. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/35:10 amONT - BRU
2 stops17h 55mMultiple Airlines
Sun 9/710:00 amBRU - ONT
2 stops40h 37mMultiple Airlines
Deal found 8/18$798

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Brussels 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 August 20, 2025.
Use the filters below to find and compare flights from Ontario to Brussels that are best for you.

Fly from

Ontario

Fly to

Brussels

Route

Depart

Return

Price

OntarioBrussels

ONT - BRU

ONTBRU

Ontario

Mon 12/1

7:00 am-8:55 am

1 stop16h 55m

Brussels Bruxelles-National

Wed 12/17

10:10 am-10:49 pm

2 stops21h 39m

$606

OntarioBrussels

ONT - BRU

ONTBRU

Ontario

Mon 11/3

7:00 am-8:55 am

1 stop16h 55m

Brussels Bruxelles-National

Fri 11/14

10:10 am-10:31 pm

1 stop21h 21m

$606

OntarioBrussels

ONT - BRU

ONTBRU

Ontario

Wed 11/12

7:00 am-8:55 am

1 stop16h 55m

Brussels Bruxelles-National

Sun 11/16

10:00 am-6:36 pm

2 stops41h 36m

$633

OntarioBrussels

ONT - BRU

ONTBRU

Ontario

Sat 12/13

5:05 am-7:50 am

2 stops17h 45m

Brussels Bruxelles-National

Tue 12/23

10:00 am-10:25 pm

2 stops45h 25m

$633

OntarioBrussels

ONT - BRU

ONTBRU

Ontario

Sat 11/1

7:00 am-7:50 am

2 stops40h 50m

Brussels Bruxelles-National

Sun 11/16

10:00 am-6:36 pm

2 stops41h 36m

$640

OntarioBrussels

ONT - BRU

ONTBRU

Ontario

Sun 11/9

5:05 am-7:50 am

2 stops17h 45m

Brussels Bruxelles-National

Sun 11/23

11:55 am-10:51 pm

2 stops19h 56m

$656

OntarioBrussels

ONT - BRU

ONTBRU

Ontario

Tue 8/26

7:00 am-9:00 am

1 stop17h 00m

$493

OntarioBrussels

ONT - BRU

ONTBRU

Ontario

Mon 8/25

6:38 pm-8:00 am

2 stops28h 22m

$493

OntarioBrussels

ONT - BRU

ONTBRU

Ontario

Sun 9/14

7:00 am-7:45 am

2 stops15h 45m

$493

OntarioBrussels

ONT - BRU

ONTBRU

Ontario

Mon 10/6

6:27 pm-8:05 am

2 stops28h 38m

$507

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/19

Showing 1-10 of 15 results
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Best time to book a flight from Ontario to Brussels

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

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

Currently, November is the cheapest month in which you can book a flight from Ontario to Brussels (average of $614). Flying from Ontario to Brussels in June is currently the most expensive (average of $1,079). 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.

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

Find hourly flight availability from Ontario to Brussels. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 20, 2025.

When flying from Ontario to Brussels, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 6% versus a flight at noon.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Brussels. 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 Brussels?

    Most people fly from Ontario (ONT) if they book a flight from Ontario to Brussels. On average, Ontario has 0 outbound flights to Brussels per day from 0 airlines. Ontario is conveniently located just 3.1 mi from Ontario’s city center.

  • How long is the flight from Ontario to Brussels?

    There are many flights that can get you from Ontario to Brussels in 16h 55m. Fly via United Airlines to get the fastest option. Airlines will cover a distance of 5590 mi.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from Ontario to Brussels (average of $614). Flying from Ontario to Brussels in June is currently the most expensive (average of $1,079). 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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