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$563+ 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 10/12. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BHD
Aug 27 — Sep 31
Thu 8/27
Thu 9/3
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 July 28, 2026.

This Priceline deal was found by Cheapflights users on 7/27. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/254:29 pm
ONT
-
BHD
2 stops17h 21m
British Airways
Sat 11/1411:35 am
BHD
-
ONT
2 stops19h 22m
British Airways
Deal found 7/27$883
This FlightHub deal was found by Cheapflights users on 7/27. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/254:29 pm
ONT
-
BHD
2 stops17h 21m
British Airways
Fri 11/136:45 am
BHD
-
ONT
2 stops20h 02m
British Airways
Deal found 7/27$904
This British Airways deal was found by Cheapflights users on 7/26. 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 10/1112:43 pm
ONT
-
BHD
2 stops17h 52m
British Airways
Wed 10/2111:35 am
BHD
-
ONT
2 stops18h 19m
British Airways
Deal found 7/26$953
This British Airways deal was found by Cheapflights users on 7/28. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/299:53 am
ONT
-
BHD
2 stops22h 52m
British Airways
Wed 1/65:40 pm
BHD
-
ONT
2 stops36h 21m
British Airways
Deal found 7/28$974
This Priceline deal was found by Cheapflights users on 7/26. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/124:29 pm
ONT
-
BHD
2 stops18h 16m
British Airways
Sat 11/711:35 am
BHD
-
ONT
2 stops19h 22m
British Airways
Deal found 7/26$1,006
This oojo deal was found by Cheapflights users on 7/25. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1312:43 pm
ONT
-
BHD
2 stops18h 37m
British Airways
Tue 10/278:45 am
BHD
-
ONT
2 stops20h 55m
British Airways
Deal found 7/25$1,027
This British Airways deal was found by Cheapflights users on 7/28. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/291:27 pm
ONT
-
BHD
2 stops19h 23m
British Airways
Wed 12/25:40 pm
BHD
-
ONT
2 stops32h 38m
British Airways
Deal found 7/28$1,118
This American Airlines deal was found by Cheapflights users on 7/27. 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 12/282:42 pm
ONT
-
BHD
2 stops17h 23m
American Airlines
Tue 1/58:45 am
BHD
-
ONT
2 stops21h 07m
American Airlines
Deal found 7/27$1,128
This British Airways deal was found by Cheapflights users on 7/28. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2812:55 pm
ONT
-
BHD
2 stops19h 10m
British Airways
Tue 1/57:25 pm
BHD
-
ONT
2 stops34h 36m
British Airways
Deal found 7/28$1,152
This Ovago deal was found by Cheapflights users on 7/27. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/282:42 pm
ONT
-
BHD
2 stops18h 43m
Multiple Airlines
Tue 1/59:50 am
BHD
-
ONT
3 stops20h 49m
Multiple Airlines
Deal found 7/27$1,426

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 July 28, 2026.

Round-trip from

$883
(Priceline)

One-way from

$563
(British Airways)
From Ontario to Belfast
Search Deals
One-way flight from Ontario to Belfast
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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 July 28, 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

Tue 12/29

9:53 am-4:45 pm

2 stops22h 52m

Belfast City

Wed 1/6

5:40 pm-10:01 pm

2 stops36h 21m

$974

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Tue 10/13

12:43 pm-3:20 pm

2 stops18h 37m

Belfast City

Tue 10/27

8:45 am-10:40 pm

2 stops20h 55m

$1,027

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Sun 11/29

1:27 pm-4:50 pm

2 stops19h 23m

Belfast City

Wed 12/2

5:40 pm-6:18 pm

2 stops32h 38m

$1,118

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Mon 12/28

2:42 pm-4:05 pm

2 stops17h 23m

Belfast City

Tue 1/5

8:45 am-9:52 pm

2 stops21h 07m

$1,128

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Mon 12/28

12:55 pm-4:05 pm

2 stops19h 10m

Belfast City

Tue 1/5

7:25 pm-10:01 pm

2 stops34h 36m

$1,153

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Sat 10/10

7:05 am-9:15 am

2 stops18h 10m

Belfast City

Wed 10/21

9:50 am-10:43 pm

2 stops20h 53m

$1,606
Quickest round-trip

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Sun 10/11

5:04 pm-4:55 pm

2 stops15h 51m

Belfast City

Sun 11/8

9:40 am-9:54 pm

2 stops20h 14m

$1,680

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Mon 12/28

10:50 am-3:00 pm

3 stops20h 10m

Belfast City

Tue 1/5

11:25 am-10:14 pm

2 stops18h 49m

$1,784
Cheapest one-way
Quickest one-way

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Mon 10/12

4:29 pm-6:45 pm

2 stops18h 16m

$563

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/26

Sorted by cheapest first

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

No data available for this route at this time. Please check back soon.

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 22h 52m. Fly via British Airways to get the fastest option. The distance from Ontario to Belfast is about 5095 mi.

  • 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.

See more FAQs

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