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Belfast

$354+ Cheap flights from Ontario (ONT) to Belfast

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 4/21. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BHD
Apr 6 — Apr 131
Mon 4/6
Mon 4/13
1 adult, Economy
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Cheap flight deals from Ontario to Belfast

Cheapest flights from Ontario to Belfast
Explore the most affordable flight options available from Ontario to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 7, 2026.

This Trip.com deal was found by Cheapflights users on 3/2. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/11:20 pm
ONT
-
BHD
2 stops19h 35m
KLM
Wed 4/89:50 am
BHD
-
ONT
2 stops20h 44m
KLM
Deal found 3/2$785
This British Airways deal was found by Cheapflights users on 3/6. 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.
Mon 9/74:54 pm
ONT
-
BHD
2 stops17h 51m
British Airways
Wed 9/2310:05 am
BHD
-
ONT
2 stops22h 12m
British Airways
Deal found 3/6$825
This British Airways deal was found by Cheapflights users on 3/6. 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.
Sun 3/295:02 pm
ONT
-
BHD
2 stops17h 43m
British Airways
Wed 4/156:30 am
BHD
-
ONT
2 stops25h 16m
British Airways
Deal found 3/6$875
This British Airways deal was found by Cheapflights users on 3/2. 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.
Fri 5/14:52 pm
ONT
-
BHD
2 stops17h 18m
British Airways
Sun 5/1711:00 am
BHD
-
ONT
2 stops18h 59m
British Airways
Deal found 3/2$987
This British Airways deal was found by Cheapflights users on 3/6. 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.
Sun 9/610:50 am
ONT
-
BHD
2 stops19h 45m
British Airways
Tue 9/224:25 pm
BHD
-
ONT
2 stops37h 25m
British Airways
Deal found 3/6$1,025
This British Airways deal was found by Cheapflights users on 3/6. 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 9/94:59 pm
ONT
-
BHD
2 stops31h 46m
British Airways
Tue 9/229:40 am
BHD
-
ONT
2 stops22h 19m
British Airways
Deal found 3/6$1,035
This British Airways deal was found by Cheapflights users on 3/6. 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.
Sat 3/2811:58 pm
ONT
-
BHD
2 stops34h 47m
British Airways
Wed 4/158:35 pm
BHD
-
ONT
2 stops35h 11m
British Airways
Deal found 3/6$1,042
This British Airways deal was found by Cheapflights users on 3/6. 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.
Sun 9/612:47 pm
ONT
-
BHD
2 stops17h 48m
British Airways
Sun 9/201:10 pm
BHD
-
ONT
2 stops40h 40m
British Airways
Deal found 3/6$1,068
This British Airways deal was found by Cheapflights users on 3/3. 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.
Fri 4/2412:19 pm
ONT
-
BHD
2 stops21h 51m
British Airways
Tue 4/287:30 pm
BHD
-
ONT
2 stops36h 16m
British Airways
Deal found 3/3$1,070
This British Airways deal was found by Cheapflights users on 3/6. 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.
Sun 3/295:02 pm
ONT
-
BHD
2 stops17h 43m
British Airways
Mon 4/137:35 pm
BHD
-
ONT
2 stops28h 47m
British Airways
Deal found 3/6$1,075
This British Airways deal was found by Cheapflights users on 3/6. 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.
Sat 9/511:59 pm
ONT
-
BHD
2 stops30h 36m
British Airways
Wed 9/2310:05 am
BHD
-
ONT
2 stops19h 45m
British Airways
Deal found 3/6$1,083
This British Airways deal was found by Cheapflights users on 3/6. 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 4/15:02 pm
ONT
-
BHD
2 stops31h 43m
British Airways
Mon 4/137:35 pm
BHD
-
ONT
2 stops28h 47m
British Airways
Deal found 3/6$1,085

Find flight deals from Ontario to Belfast

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Belfast (BF1). 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 March 7, 2026.

Round-trip from

$785
(Trip.com)

One-way from

$485
(oojo)
From Ontario to Belfast
Search Deals
One-way flight from Ontario to Belfast
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Belfast 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 March 7, 2026.
Use the filters below to find and compare flights from Ontario to Belfast that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Wed 4/1

1:20 pm-4:55 pm

2 stops19h 35m

Belfast City

Wed 4/8

9:50 am-10:34 pm

2 stops20h 44m

$785

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Fri 5/1

4:52 pm-6:10 pm

2 stops17h 18m

Belfast City

Sun 5/17

11:00 am-9:59 pm

2 stops18h 59m

$987

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Tue 3/31

5:02 pm-7:40 pm

2 stops18h 38m

Belfast City

Thu 4/16

6:30 am-11:46 pm

2 stops25h 16m

$1,025

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Fri 4/24

12:19 pm-6:10 pm

2 stops21h 51m

Belfast City

Tue 4/28

7:30 pm-11:46 pm

2 stops36h 16m

$1,070

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Mon 3/30

5:02 pm-6:45 pm

2 stops17h 43m

Belfast City

Mon 4/13

7:35 pm-4:22 pm

2 stops28h 47m

$1,075

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Sun 3/29

5:02 pm-6:45 pm

2 stops17h 43m

Belfast City

Mon 4/13

7:35 pm-4:22 pm

2 stops28h 47m

$1,075

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Mon 3/30

5:02 pm-6:45 pm

2 stops17h 43m

Belfast City

Sun 4/12

8:10 pm-9:59 pm

2 stops33h 49m

$1,118

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Sat 3/28

11:58 pm-6:45 pm

2 stops34h 47m

Belfast City

Sun 4/12

8:10 pm-6:37 pm

2 stops30h 27m

$1,142
Quickest round-trip

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Sat 4/18

2:08 pm-3:05 pm

2 stops16h 57m

Belfast City

Sat 4/25

7:05 am-4:22 pm

2 stops17h 17m

$1,170

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Fri 3/27

7:00 am-10:30 am

2 stops20h 30m

Belfast City

Sat 4/4

7:05 am-4:22 pm

2 stops17h 17m

$1,244

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/7

Showing 1-10 of 16 resultsSorted by cheapest first
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Best time to book a flight from Ontario to Belfast

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

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

Currently, March is the cheapest month in which you can book a flight from Ontario to Belfast (average of $583). Flying from Ontario to Belfast in June is currently the most expensive (average of $927). 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 Belfast. 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 Belfast?

    Ontario (ONT) is the airport you will fly out of if you book a flight from Ontario to Belfast. You should not have trouble finding flights to Belfast from Ontario; the airport handles an average of 0 outbound flights to Belfast per day. You should also have plenty of airline options to choose from since 0 airlines have flights from the Ontario airport to Belfast. It is only a 3.1 mi journey to Ontario (ONT) from Ontario’s city center.

  • How long is the flight from Ontario to Belfast?

    There are many flights that can get you from Ontario to Belfast in 17h 43m. Fly via KLM or British Airways to get the fastest option. The distance from Ontario to Belfast is about 5095 mi. This flight may include one or multiple stops.

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

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

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

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

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

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

    Currently, March is the cheapest month in which you can book a flight from Ontario to Belfast (average of $583). Flying from Ontario to Belfast in June is currently the most expensive (average of $927). 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 Belfast

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