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Cheap flights from Ontario to Belfast Intl Airport from £256

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 17/1. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — BFS
4 Jan — 11 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Ontario to Belfast Intl

Enter your travel dates to find the best prices.

Cheapest flights from Ontario to Belfast Intl
Explore the most affordable flight options available from Ontario to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 5 December 2025.

Thu 4/1214:10YYZ - BFS
2 stops26h 55mMultiple Airlines
Thu 11/1214:50BFS - YYZ
2 stops26h 45mMultiple Airlines
Deal found 3/12£797
Thu 18/1213:30YUL - BFS
2 stops26h 10mMultiple Airlines
Fri 30/108:05BFS - YUL
2 stops33h 10mMultiple Airlines
Deal found 4/12£1,002
Fri 26/1219:20YUL - BFS
2 stops21h 40mMultiple Airlines
Fri 2/107:05BFS - YUL
3 stops34h 10mMultiple Airlines
Deal found 3/12£1,318
Mon 29/1221:35YYZ - BFS
1 stop17h 35mMultiple Airlines
Sat 3/122:25BFS - YYZ
3 stops45h 25mMultiple Airlines
Deal found 4/12£1,369
Sun 28/1220:10YUL - BFS
1 stop13h 00mMultiple Airlines
Sat 3/117:40BFS - YUL
2 stops29h 45mMultiple Airlines
Deal found 2/12£1,643

Find flight deals from Ontario to Belfast Intl

Keep the following information in mind while searching for Ontario to Belfast Intl flight deals. Data was last updated 5 December 2025.

Round-trip from

£417

One-way from

£256

Popular in

July

Cheapest in

October

Average price

£963
22/1-29/1
  • 22/1-29/1
  • 4 total stops
  • 38h 25m total
  • Ontario to Belfast
Search Deals
17/1
  • 17/1
  • 3 total stops
  • 44h 25m total
  • Ontario to Belfast
Search Deals
Highest demand for flights based on searches. 26% potential increase in price (£254 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 17% potential price decrease (£103 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Ontario to Belfast Intl 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 858,174 searches. Data last updated 5 December 2025.
Use the filters below to find and compare flights from Ontario to Belfast Intl Airport that are best for you.

Fly from

Ontario

Fly to

Belfast Intl

Route

Depart

Return

Price

TorontoBelfast

YYZ - BFS

YYZBFS

Toronto Pearson Intl

Thu 22/1

19:40-22:20

2 stops21h 40m

Belfast Intl

Thu 29/1

06:30-18:15

2 stops16h 45m

£417

TorontoBelfast

YYZ - BFS

YYZBFS

Toronto Pearson Intl

Mon 19/1

19:40-20:10

2 stops19h 30m

Belfast Intl

Mon 26/1

06:30-18:15

2 stops16h 45m

£436

TorontoBelfast

YYZ - BFS

YYZBFS

Toronto Pearson Intl

Fri 6/3

21:35-08:55

1 stop30h 20m

Belfast Intl

Fri 13/3

06:30-16:00

1 stop13h 30m

£440

MontrealBelfast

YUL - BFS

YULBFS

Montreal Pierre Elliott Trudeau Intl

Mon 19/1

15:10-20:10

2 stops24h 00m

Belfast Intl

Mon 2/2

06:00-16:05

1 stop15h 05m

£531

MontrealBelfast

YUL - BFS

YULBFS

Montreal Pierre Elliott Trudeau Intl

Sat 17/1

20:10-21:40

2 stops20h 30m

Belfast Intl

Sat 24/1

22:25-20:15

3 stops26h 50m

£543

TorontoBelfast

YTZ - BFS

YTZBFS

Toronto Island

Mon 19/1

12:30-20:10

3 stops26h 40m

Belfast Intl

Mon 26/1

07:50-21:20

3 stops42h 30m

£570

MontrealBelfast

YUL - BFS

YULBFS

Montreal Pierre Elliott Trudeau Intl

Fri 22/5

21:30-14:15

1 stop11h 45m

Belfast Intl

Mon 1/6

08:15-14:15

1 stop11h 00m

£574

OttawaBelfast

YOW - BFS

YOWBFS

Ottawa

Sat 17/1

10:00-21:40

3 stops30h 40m

Belfast Intl

Sat 24/1

22:25-00:42

2 stops31h 17m

£690

MontrealBelfast

YUL - BFS

YULBFS

Montreal Pierre Elliott Trudeau Intl

Thu 18/12

13:30-20:40

2 stops26h 10m

Belfast Intl

Fri 30/1

08:05-12:15

2 stops33h 10m

£1,002

TorontoBelfast

YYZ - BFS

YYZBFS

Toronto Pearson Intl

Mon 29/12

21:35-20:10

1 stop17h 35m

Belfast Intl

Sat 3/1

22:25-14:50

3 stops45h 25m

£1,369

Flights are sorted by cheapest return flights first.

Deals found on 3/12

Showing 1-10 of 17 results
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Best time to book a flight from Ontario to Belfast Intl

Have a flexible travel schedule? Discover the best time to fly to Belfast Intl from Ontario with our price prediction graph.
Estimated return 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 Intl Airport
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 Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the most popular routes from Region of Ontario to Belfast Intl Airport?

    Most travelers choose Toronto Pearson Intl - Belfast Intl, Montreal Pierre Elliott Trudeau Intl - Belfast Intl or Ottawa - Belfast Intl when deciding on the best route from Region of Ontario to Belfast Intl Airport.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Ontario to Belfast Intl 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

Travelling to a place near Belfast Intl Airport?

Book flights to Belfast Intl Airport if you plan to visit one of these locations
Armagh
Newry
Ballymena
Cookstown
Dungannon

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Why should you use Cheapflights to find cheap flight tickets from Ontario to Belfast Intl?

Cheapflights simply makes it quick and affordable to book flights from Ontario to Belfast Intl by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Ontario to Belfast Intl with no change fees?

Need flexible booking options for your flight to Belfast Intl from Ontario? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Ontario to Belfast Intl become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Belfast Intl from Ontario today and book when prices fit your budget.

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