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Ontario

$644+ Cheap flights from Belfast to Ontario (ONT)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/12. Fares are subject to change and may not be available on all flights or dates of travel.
BHD — ONT
Feb 14 — Feb 211
Sat 2/14
Sat 2/21
1 adult, Economy
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Cheap flight deals from Belfast to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Belfast (BF1) to Ontario (ONT). 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 January 15, 2026.

Round-trip from

$644
(British Airways)

Popular in

December

Cheapest in

June

Average price

$635
From Belfast to Ontario
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($136 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($42 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Find flight deals from Belfast to Ontario

Cheapest flights from Belfast to Ontario
Explore the most affordable flight options available from Belfast to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 15, 2026.

This British Airways deal was found by Cheapflights users on 1/14. 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.
Thu 2/128:00 pm
BHD
-
ONT
2 stops35h 59m
British Airways
Mon 2/165:02 pm
ONT
-
BHD
2 stops15h 03m
British Airways
Deal found 1/14$644
This British Airways deal was found by Cheapflights users on 1/13. 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 2/115:40 pm
BHD
-
ONT
2 stops48h 26m
British Airways
Sun 2/157:00 am
ONT
-
BHD
2 stops27h 40m
British Airways
Deal found 1/13$645
This American Airlines deal was found by Cheapflights users on 1/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/25:15 pm
BHD
-
ONT
2 stops33h 02m
American Airlines
Mon 9/711:59 pm
ONT
-
BHD
2 stops31h 21m
American Airlines
Deal found 1/15$656
This American Airlines deal was found by Cheapflights users on 1/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/313:25 pm
BHD
-
ONT
2 stops34h 52m
American Airlines
Sat 9/52:31 pm
ONT
-
BHD
2 stops16h 34m
American Airlines
Deal found 1/15$664
This American Airlines deal was found by Cheapflights users on 1/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/306:50 am
BHD
-
ONT
2 stops17h 34m
American Airlines
Thu 9/34:54 pm
ONT
-
BHD
2 stops17h 51m
American Airlines
Deal found 1/15$673
This American Airlines deal was found by Cheapflights users on 1/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/19:35 am
BHD
-
ONT
2 stops19h 51m
American Airlines
Wed 8/52:31 pm
ONT
-
BHD
2 stops17h 04m
American Airlines
Deal found 1/15$780
This American Airlines deal was found by Cheapflights users on 1/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/39:50 am
BHD
-
ONT
2 stops20h 46m
American Airlines
Fri 8/72:31 pm
ONT
-
BHD
2 stops16h 59m
American Airlines
Deal found 1/15$885
This American Airlines deal was found by Cheapflights users on 1/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/23:50 pm
BHD
-
ONT
2 stops38h 07m
American Airlines
Fri 8/72:31 pm
ONT
-
BHD
2 stops16h 59m
American Airlines
Deal found 1/15$1,049
This KLM deal was found by Cheapflights users on 1/13. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/239:50 am
BHD
-
ONT
2 stops19h 08m
KLM
Tue 6/25:05 pm
ONT
-
BHD
2 stops15h 50m
KLM
Deal found 1/13$1,413

Cheapflights Fare Finder

 
Customize your flight search to find flights from Belfast to Ontario 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 January 15, 2026.
Use the filters below to find and compare flights from Belfast to Ontario that are best for you.

Fly from

Belfast

Fly to

Ontario

Route

Depart

Return

Price

BelfastOntario

BHD - ONT

BHDONT

Belfast City

Thu 2/12

8:00 pm-11:59 pm

2 stops35h 59m

Ontario

Mon 2/16

5:02 pm-4:05 pm

2 stops15h 03m

$644

BelfastOntario

BHD - ONT

BHDONT

Belfast City

Wed 2/11

5:40 pm-10:06 am

2 stops48h 26m

Ontario

Sun 2/15

7:00 am-6:40 pm

2 stops27h 40m

$645

BelfastOntario

BHD - ONT

BHDONT

Belfast City

Thu 4/23

9:50 am-8:58 pm

2 stops19h 08m

Ontario

Tue 6/2

5:05 pm-4:55 pm

2 stops15h 50m

$1,413

BelfastOntario

BHD - ONT

BHDONT

Belfast City

Tue 1/20

5:20 pm-4:15 pm

2 stops30h 55m

$1,540

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/15

Best time to book a flight from Belfast to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Belfast 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 Belfast to Ontario

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

Currently, November is the cheapest month in which you can book a flight from Belfast to Ontario (average of $477). Flying from Belfast to Ontario in December is currently the most expensive (average of $675). 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 Belfast to Ontario. 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 into for flights to Ontario from Belfast?

    If you book a flight to Ontario from Belfast, you will be flying to Ontario, which is the city’s only airport. Ontario (ONT) is located 3.1 mi from the center of Ontario. There are 0 flights from Belfast to Ontario per day from 0 different airlines.

  • How long is the flight from Belfast to Ontario?

    British Airways and KLM can get you from Belfast to Ontario in just under 19h 08m. Your travel time can differ by up to 16h 51m. Airlines will cover a distance of 5095 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from Belfast to Ontario (average of $477). Flying from Belfast to Ontario in December is currently the most expensive (average of $675). 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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