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Cheap flights from Ontario to Belfast Intl Airport from £149

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 11/10. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — BFS
3 Sep — 10 Sep1
1 adult

Cheap 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 29 August 2025.

Round-trip from

£444

One-way from

£149

Popular in

July

Cheapest in

October

Average price

£791
6/10-10/10
  • 6/10-10/10
  • 3 total stops
  • 38h 00m total
  • Ontario to Belfast
Search Deals
11/10
  • 11/10
  • 1 total stop
  • 18h 50m total
  • Ontario to Belfast
Search Deals
Highest demand for flights based on searches. 31% potential increase in price (£294 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 19% potential price decrease (£104 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2025
Search Deals

Find flight deals from Ontario to Belfast Intl

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 29 August 2025.

Mon 6/1022:15YYZ - BFS
1 stop12h 55mMultiple Airlines
Fri 10/1021:05BFS - YYZ
2 stops25h 05mMultiple Airlines
Deal found 27/8£444
Sat 27/922:15YYZ - BFS
1 stop28h 35mMultiple Airlines
Sat 4/1016:30BFS - YYZ
2 stops29h 20mMultiple Airlines
Deal found 28/8£453
Mon 6/1014:45YTZ - BFS
2 stops20h 05mMultiple Airlines
Fri 10/1006:05BFS - YTZ
2 stops17h 05mMultiple Airlines
Deal found 27/8£457
Mon 13/1022:15YYZ - BFS
1 stop19h 15mMultiple Airlines
Wed 29/1010:40BFS - YYZ
2 stops33h 05mMultiple Airlines
Deal found 27/8£466
Sat 11/1022:15YYZ - BFS
1 stop19h 15mMultiple Airlines
Sat 18/1019:35BFS - YYZ
3 stops43h 24mMultiple Airlines
Deal found 26/8£470
Wed 24/922:15YYZ - BFS
1 stop19h 40mMultiple Airlines
Fri 3/1008:20BFS - YYZ
1 stop10h 50mMultiple Airlines
Deal found 28/8£474
Wed 10/921:30YUL - BFS
1 stop16h 35mMultiple Airlines
Fri 12/906:05BFS - YUL
1 stop13h 10mMultiple Airlines
Deal found 28/8£507
Wed 19/1121:25YUL - BFS
1 stop11h 40mMultiple Airlines
Sun 30/1106:30BFS - YUL
1 stop14h 15mMultiple Airlines
Deal found 27/8£564
Tue 9/921:30YUL - BFS
2 stops20h 15mMultiple Airlines
Fri 12/906:05BFS - YUL
1 stop13h 10mMultiple Airlines
Deal found 28/8£577
Sun 19/1021:30YUL - BFS
1 stop12h 25mMultiple Airlines
Thu 23/1015:10BFS - YUL
2 stops25h 25mMultiple Airlines
Deal found 28/8£604
Wed 19/1115:05YOW - BFS
2 stops21h 50mMultiple Airlines
Tue 25/1106:30BFS - YOW
2 stops16h 56mMultiple Airlines
Deal found 27/8£613
Fri 17/1018:50YUL - BFS
2 stops15h 15mMultiple Airlines
Thu 23/1019:35BFS - YUL
1 stop21h 00mMultiple Airlines
Deal found 28/8£623

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 29 August 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

Mon 6/10

22:15-16:10

1 stop12h 55m

Belfast Intl

Fri 10/10

21:05-17:10

2 stops25h 05m

£444

TorontoBelfast

YYZ - BFS

YYZBFS

Toronto Pearson Intl

Sat 27/9

22:15-07:50

1 stop28h 35m

Belfast Intl

Sat 4/10

16:30-16:50

2 stops29h 20m

£453

TorontoBelfast

YTZ - BFS

YTZBFS

Toronto Island

Mon 6/10

14:45-15:50

2 stops20h 05m

Belfast Intl

Fri 10/10

06:05-18:10

2 stops17h 05m

£457

TorontoBelfast

YYZ - BFS

YYZBFS

Toronto Pearson Intl

Mon 13/10

22:15-22:30

1 stop19h 15m

Belfast Intl

Wed 29/10

10:40-15:45

2 stops33h 05m

£466

TorontoBelfast

YYZ - BFS

YYZBFS

Toronto Pearson Intl

Sat 11/10

22:15-22:30

1 stop19h 15m

Belfast Intl

Sat 18/10

19:35-09:59

3 stops43h 24m

£470

TorontoBelfast

YYZ - BFS

YYZBFS

Toronto Pearson Intl

Wed 24/9

22:15-22:55

1 stop19h 40m

Belfast Intl

Fri 3/10

08:20-14:10

1 stop10h 50m

£474

MontrealBelfast

YUL - BFS

YULBFS

Montreal Pierre Elliott Trudeau Intl

Wed 10/9

21:30-19:05

1 stop16h 35m

Belfast Intl

Fri 12/9

06:05-14:15

1 stop13h 10m

£507

MontrealBelfast

YUL - BFS

YULBFS

Montreal Pierre Elliott Trudeau Intl

Wed 19/11

21:25-14:05

1 stop11h 40m

Belfast Intl

Sun 30/11

06:30-15:45

1 stop14h 15m

£564

MontrealBelfast

YUL - BFS

YULBFS

Montreal Pierre Elliott Trudeau Intl

Tue 9/9

21:30-22:45

2 stops20h 15m

Belfast Intl

Fri 12/9

06:05-14:15

1 stop13h 10m

£577

MontrealBelfast

YUL - BFS

YULBFS

Montreal Pierre Elliott Trudeau Intl

Sun 19/10

21:30-14:55

1 stop12h 25m

Belfast Intl

Thu 23/10

15:10-11:35

2 stops25h 25m

£604

Flights are sorted by cheapest return flights first.

Deals found on 27/8

Showing 1-10 of 25 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

What is the cheapest month to book a flight from Region of Ontario to Belfast Intl Airport?

Currently, January is the cheapest month in which you can book a flight from Region of Ontario to Belfast Intl Airport (average of £67). Flying from Region of Ontario to Belfast Intl Airport in July is currently the most expensive (average of £90). 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.

How much does it cost for a return flight from Region of Ontario to Belfast Intl Airport?

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 Montreal Pierre Elliott Trudeau Intl - Belfast Intl, Toronto Pearson Intl - Belfast Intl or Toronto Island - 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.

  • What is the cheapest month to book a flight from Region of Ontario to Belfast Intl Airport?

    Currently, January is the cheapest month in which you can book a flight from Region of Ontario to Belfast Intl Airport (average of £67). Flying from Region of Ontario to Belfast Intl Airport in July is currently the most expensive (average of £90). 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

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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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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