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Cheap flights from Ontario to Belfast from £373

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Belfast departing on 10/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags
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Find the cheapest flights from Ontario to Belfast

Cheap return flights

Enter your travel dates to find the best prices.
British Airways Logo
12:37 - 13:35
ONT
-
BHD
16h 58m
2 stops
British Airways Logo
09:35 - 20:09
BHD
-
ONT
18h 34m
2 stops
£798British Airways
Wed, 23 Sep - Fri, 2 Oct
British Airways Logo
06:10 - 16:50
ONT
-
BHD
26h 40m
2 stops
British Airways Logo
11:05 - 23:57
BHD
-
ONT
20h 52m
2 stops
£834British Airways
Sun, 8 Nov - Thu, 12 Nov
British Airways Logo
06:10 - 16:50
ONT
-
BHD
26h 40m
2 stops
British Airways Logo
11:05 - 23:57
BHD
-
ONT
20h 52m
2 stops
£835British Airways
Sun, 8 Nov - Thu, 12 Nov
British Airways Logo
10:25 - 10:15
ONT
-
BHD
16h 50m
2 stops
British Airways Logo
11:30 - 22:23
BHD
-
ONT
18h 53m
2 stops
£852British Airways
Wed, 28 Oct - Mon, 2 Nov
British Airways Logo
16:07 - 18:45
ONT
-
BHD
18h 38m
2 stops
British Airways Logo
07:05 - 18:15
BHD
-
ONT
19h 10m
2 stops
£966British Airways
Sun, 9 Aug - Sat, 15 Aug
British Airways Logo
12:35 - 20:35
ONT
-
BHD
24h 00m
2 stops
British Airways Logo
06:30 - 19:59
BHD
-
ONT
21h 29m
2 stops
£1,200British Airways
Thu, 9 Jul - Fri, 17 Jul

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British Airways flights from Ontario to Belfast

Our best British Airways deals on Ontario to Belfast flight tickets
British Airways
23 Sept
ONT12:37Ontario
16h 58m
2 stops
BHD13:35Belfast City
2 Oct
BHD09:35Belfast City
18h 34m
2 stops
ONT20:09Ontario
£798
British Airways
8 Nov
ONT06:10Ontario
26h 40m
2 stops
BHD16:50Belfast City
12 Nov
BHD11:05Belfast City
20h 52m
2 stops
ONT23:57Ontario
£834
British Airways
8 Nov
ONT06:10Ontario
26h 40m
2 stops
BHD16:50Belfast City
12 Nov
BHD11:05Belfast City
20h 52m
2 stops
ONT23:57Ontario
£835

momondo Fare Finder

 
Customise 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, momondo users made 279,928 searches. Data last updated 17 June 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 return flight
Fastest return journey

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Wed 23/9

12:37-13:35

2 stops16h 58m

Belfast City

Fri 2/10

09:35-20:09

2 stops18h 34m

£798

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Sun 8/11

06:10-16:50

2 stops26h 40m

Belfast City

Thu 12/11

11:05-23:57

2 stops20h 52m

£834

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Sun 8/11

06:10-16:50

2 stops26h 40m

Belfast City

Thu 12/11

11:05-23:57

2 stops20h 52m

£835

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Wed 28/10

10:25-10:15

2 stops16h 50m

Belfast City

Mon 2/11

11:30-22:23

2 stops18h 53m

£852

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Sun 9/8

16:07-18:45

2 stops18h 38m

Belfast City

Sat 15/8

07:05-18:15

2 stops19h 10m

£966

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Thu 9/7

12:35-20:35

2 stops24h 00m

Belfast City

Fri 17/7

06:30-19:59

2 stops21h 29m

£1,200
Cheapest one-way
Fastest single journey

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Thu 10/9

14:22-18:45

2 stops20h 23m

£373

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

See travel insights to Belfast from

How to get the cheapest flight ticket from Ontario to Belfast

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Ontario to Belfast?

British Airways is the most popular carrier operating from Ontario to Belfast

Cheap Ontario to Belfast flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Belfast

Fastest flight time

16h 58m

Direct flights

None
The fastest flight from Ontario to Belfast takes 16h 58m
There are no direct flights from Ontario to Belfast. There are no popular flight routes from Ontario to Belfast.
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Frequently asked questions about flying from Ontario to Belfast

  • How far is Ontario to Belfast by plane?

    The straight-line distance from Ontario to Belfast is 5095.8 mi. Flights usually cover this in 16h 58m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Ontario Airport to Belfast?

    Prices for flights from Ontario Airport to Belfast refresh daily.

  • How old do you have to be to fly from Ontario Airport to Belfast?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ontario Airport to Belfast.

  • What documentation or ID do you need to fly to Belfast?

    The necessary travel and health documents for your Belfast trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Belfast?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Belfast from Ontario.

Can I find flights from Ontario to Belfast with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Belfast from Ontario with this policy.

How can momondo help me find flights from Ontario to Belfast?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Ontario to Belfast.

I’m not ready to book a flight from Ontario to Belfast right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Belfast, momondo offers a useful price alert feature which will track prices for flights to Belfast from Ontario and alert you when they change.

An easier way to manage your Belfast trip

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Find better results for your trip to the United Kingdom

Fly into one of these airports located in Belfast

Airports listed have a maximum distance of 12.2 mi from Belfast
Belfast Intl Airport
Belfast City Airport