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Cheap flights from Ontario to Belfast Intl Airport from £142

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 29/8. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — BFS
20 Aug — 27 Aug1
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 21 July 2026.

Sun 30/819:15
YYZ
-
BFS
1 stop20h 45m
Multiple Airlines
Sun 6/921:25
BFS
-
YYZ
1 stop18h 35m
Multiple Airlines
Deal found 16/7£410
Thu 6/823:55
YYZ
-
BFS
2 stops16h 45m
Multiple Airlines
Tue 25/823:30
BFS
-
YYZ
3 stops39h 30m
Multiple Airlines
Deal found 19/7£419
Sun 13/906:45
YUL
-
BFS
2 stops31h 05m
Multiple Airlines
Sun 27/920:20
BFS
-
YUL
2 stops29h 40m
Multiple Airlines
Deal found 20/7£429
Mon 14/922:45
YYZ
-
BFS
1 stop16h 40m
Multiple Airlines
Sat 3/1006:00
BFS
-
YYZ
1 stop14h 40m
Multiple Airlines
Deal found 19/7£439
Mon 14/907:35
YYZ
-
BFS
2 stops22h 40m
Multiple Airlines
Thu 1/1008:20
BFS
-
YYZ
1 stop10h 50m
Multiple Airlines
Deal found 21/7£441
Sun 13/921:55
YYZ
-
BFS
1 stop18h 05m
Multiple Airlines
Sat 3/1021:15
BFS
-
YYZ
2 stops29h 30m
Multiple Airlines
Deal found 21/7£444
Mon 14/919:15
YYZ
-
BFS
1 stop20h 25m
Multiple Airlines
Wed 30/917:40
BFS
-
YYZ
1 stop22h 20m
Multiple Airlines
Deal found 20/7£462
Wed 5/821:35
YYZ
-
BFS
2 stops19h 45m
Multiple Airlines
Wed 12/822:45
BFS
-
YYZ
1 stop17h 15m
Multiple Airlines
Deal found 16/7£465
Tue 18/806:45
YUL
-
BFS
2 stops34h 30m
Multiple Airlines
Mon 24/820:35
BFS
-
YUL
1 stop20h 00m
Multiple Airlines
Deal found 19/7£468
Mon 31/809:00
YTZ
-
BFS
2 stops30h 40m
Multiple Airlines
Mon 7/914:40
BFS
-
YTZ
3 stops46h 11m
Multiple Airlines
Deal found 17/7£622

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 21 July 2026.

Round-trip from

£410

One-way from

£142
30/8-6/9
  • 30/8-6/9
  • 2 total stops
  • 39h 20m total
  • Ontario to Belfast
Search Deals
29/8
  • 29/8
  • 2 total stops
  • 43h 25m total
  • Ontario to Belfast
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 21 July 2026.
Use the filters below to find and compare flights from Ontario to Belfast Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

TorontoBelfast

YYZ - BFS

YYZBFS

Toronto Pearson Intl

Mon 14/9

07:35-11:15

2 stops22h 40m

Belfast Intl

Thu 1/10

08:20-14:10

1 stop10h 50m

£441

TorontoBelfast

YYZ - BFS

YYZBFS

Toronto Pearson Intl

Mon 14/9

22:45-20:25

1 stop16h 40m

Belfast Intl

Sat 3/10

06:20-17:40

2 stops16h 20m

£445

TorontoBelfast

YYZ - BFS

YYZBFS

Toronto Pearson Intl

Sun 13/9

21:55-06:45

1 stop27h 50m

Belfast Intl

Sat 3/10

06:00-15:40

1 stop14h 40m

£446

TorontoBelfast

YYZ - BFS

YYZBFS

Toronto Pearson Intl

Mon 14/9

19:15-20:40

1 stop20h 25m

Belfast Intl

Wed 30/9

17:40-11:00

1 stop22h 20m

£462

MontrealBelfast

YUL - BFS

YULBFS

Montreal Pierre Elliott Trudeau Intl

Tue 18/8

06:45-22:15

2 stops34h 30m

Belfast Intl

Mon 24/8

20:35-11:35

1 stop20h 00m

£468

MontrealBelfast

YUL - BFS

YULBFS

Montreal Pierre Elliott Trudeau Intl

Sun 13/9

22:05-20:15

1 stop17h 10m

Belfast Intl

Sun 27/9

14:55-14:15

1 stop28h 20m

£475
Fastest return journey

TorontoBelfast

YYZ - BFS

YYZBFS

Toronto Pearson Intl

Tue 18/8

21:55-22:15

1 stop19h 20m

Belfast Intl

Mon 24/8

06:40-13:40

1 stop12h 00m

£490

TorontoBelfast

YTZ - BFS

YTZBFS

Toronto Island

Mon 31/8

09:00-20:40

2 stops30h 40m

Belfast Intl

Mon 7/9

14:40-07:51

3 stops46h 11m

£622

MontrealBelfast

YUL - BFS

YULBFS

Montreal Pierre Elliott Trudeau Intl

Sat 2/1

08:30-20:25

3 stops30h 55m

Belfast Intl

Tue 12/1

08:20-12:10

2 stops32h 50m

£693

MontrealBelfast

YUL - BFS

YULBFS

Montreal Pierre Elliott Trudeau Intl

Sat 16/1

13:25-21:30

3 stops27h 05m

Belfast Intl

Tue 26/1

06:40-12:10

2 stops34h 30m

£715

Flights are sorted by cheapest return flights first.

Deals found on 17/7

Showing 1-10 of 21 resultsSorted by cheapest first
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2
3

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

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

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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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