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$377+ 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 2/25. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BRU
Dec 31 — Jan 71
Wed 12/31
Wed 1/7
1 adult, Economy
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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 December 1, 2025.

This United Airlines deal was found by Cheapflights users on 11/28. 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.
Fri 12/2611:59 pmONT - BRU
1 stop23h 56mUnited Airlines
Tue 1/610:00 amBRU - ONT
2 stops35h 47mUnited Airlines
Deal found 11/28$851
This United Airlines deal was found by Cheapflights users on 11/29. 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 Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2511:59 pmONT - BRU
1 stop23h 56mUnited Airlines
Thu 1/110:00 amBRU - ONT
2 stops45h 25mUnited Airlines
Deal found 11/29$854
This United Airlines deal was found by Cheapflights users on 11/30. 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.
Wed 12/2411:59 pmONT - BRU
1 stop23h 56mUnited Airlines
Sun 12/2810:10 amBRU - ONT
1 stop21h 15mUnited Airlines
Deal found 11/30$1,015
This United Airlines deal was found by Cheapflights users on 11/28. 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.
Wed 12/245:05 amONT - BRU
2 stops23h 10mUnited Airlines
Fri 1/210:10 amBRU - ONT
1 stop21h 15mUnited Airlines
Deal found 11/28$1,050
This United Airlines deal was found by Cheapflights users on 11/28. 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.
Thu 12/255:05 amONT - BRU
2 stops23h 10mUnited Airlines
Fri 1/210:10 amBRU - ONT
1 stop21h 15mUnited Airlines
Deal found 11/28$1,076
This United Airlines deal was found by Cheapflights users on 11/28. 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.
Wed 12/245:05 amONT - BRU
2 stops23h 10mUnited Airlines
Mon 1/510:10 amBRU - ONT
1 stop21h 15mUnited Airlines
Deal found 11/28$1,170
This United Airlines deal was found by Cheapflights users on 11/28. 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.
Wed 12/245:05 amONT - BRU
2 stops23h 10mUnited Airlines
Sun 1/44:55 pmBRU - ONT
2 stops38h 30mUnited Airlines
Deal found 11/28$1,189
This United Airlines deal was found by Cheapflights users on 11/28. 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.
Fri 12/2611:59 pmONT - BRU
2 stops27h 36mUnited Airlines
Mon 1/510:10 amBRU - ONT
1 stop21h 15mUnited Airlines
Deal found 11/28$1,193

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 December 1, 2025.

Round-trip from

$460
(oojo)

One-way from

$377
(oojo)

Popular in

June

Cheapest in

March

Average price

$833
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. 19% potential increase in price ($196 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 December 2025
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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 December 1, 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

Wed 1/14

3:09 pm-4:20 pm

2 stops16h 11m

Brussels Bruxelles-National

Wed 1/21

11:50 am-10:48 pm

2 stops19h 58m

$460

OntarioBrussels

ONT - BRU

ONTBRU

Ontario

Fri 2/20

5:06 pm-10:30 am

2 stops32h 24m

Brussels Bruxelles-National

Mon 3/9

8:45 pm-10:07 pm

2 stops33h 22m

$485

OntarioBrussels

ONT - BRU

ONTBRU

Ontario

Tue 1/20

6:00 am-1:15 pm

2 stops22h 15m

Brussels Bruxelles-National

Sat 1/31

10:00 am-12:47 pm

2 stops35h 47m

$503

OntarioBrussels

ONT - BRU

ONTBRU

Ontario

Thu 1/8

1:24 pm-1:15 pm

2 stops14h 51m

Brussels Bruxelles-National

Fri 1/16

10:00 am-12:47 pm

2 stops35h 47m

$503

OntarioBrussels

ONT - BRU

ONTBRU

Ontario

Wed 1/14

5:05 am-7:50 am

2 stops17h 45m

Brussels Bruxelles-National

Wed 1/21

10:10 am-10:53 pm

2 stops21h 43m

$512

OntarioBrussels

ONT - BRU

ONTBRU

Ontario

Wed 1/28

5:05 am-1:15 pm

2 stops23h 10m

Brussels Bruxelles-National

Sun 2/1

4:55 pm-10:53 pm

2 stops38h 58m

$522

OntarioBrussels

ONT - BRU

ONTBRU

Ontario

Wed 1/14

5:05 am-7:50 am

3 stops41h 45m

Brussels Bruxelles-National

Wed 1/21

2:25 pm-12:47 pm

3 stops31h 22m

$596

OntarioBrussels

ONT - BRU

ONTBRU

Ontario

Fri 12/26

11:59 pm-8:55 am

1 stop23h 56m

Brussels Bruxelles-National

Tue 1/6

10:00 am-12:47 pm

2 stops35h 47m

$851

OntarioBrussels

ONT - BRU

ONTBRU

Ontario

Wed 12/24

11:59 pm-8:55 am

1 stop23h 56m

Brussels Bruxelles-National

Sun 12/28

10:10 am-10:25 pm

1 stop21h 15m

$1,015

OntarioBrussels

ONT - BRU

ONTBRU

Ontario

Wed 12/24

5:05 am-1:15 pm

2 stops23h 10m

Brussels Bruxelles-National

Thu 1/1

11:55 am-10:25 pm

2 stops19h 30m

$1,055

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/30

Showing 1-10 of 18 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, March is the cheapest month in which you can book a flight from Ontario to Brussels (average of $439). Flying from Ontario to Brussels in June is currently the most expensive (average of $889). 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

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 11m. Fly via British Airways or United Airlines to get the fastest option. Airlines will cover a distance of 5590 mi. This flight may include one or multiple stops.

  • 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, March is the cheapest month in which you can book a flight from Ontario to Brussels (average of $439). Flying from Ontario to Brussels in June is currently the most expensive (average of $889). 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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Alternative routes for Ontario to Brussels

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