Find flights
When to book
FAQs

Cheap flights from Ontario to Belfast Intl Airport from C$ 339

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 24/5. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — BFS
10 May — 17 May1
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 10 April 2026.

Tue 5/57:35 a.m.
YYZ
-
BFS
3 stops34h 45m
Multiple Airlines
Tue 12/511:30 p.m.
BFS
-
YYZ
2 stops18h 50m
Multiple Airlines
Deal found 5/4C$ 755
Thu 7/510:05 p.m.
YUL
-
BFS
1 stop20h 20m
Multiple Airlines
Thu 14/51:00 p.m.
BFS
-
YUL
1 stop30h 15m
Multiple Airlines
Deal found 9/4C$ 811
Mon 4/57:15 p.m.
YYZ
-
BFS
1 stop12h 15m
Multiple Airlines
Mon 11/56:05 p.m.
BFS
-
YYZ
1 stop21h 55m
Multiple Airlines
Deal found 6/4C$ 814
Mon 4/57:15 p.m.
YYZ
-
BFS
1 stop16h 00m
Multiple Airlines
Fri 8/55:05 p.m.
BFS
-
YYZ
3 stops33h 40m
Multiple Airlines
Deal found 8/4C$ 833
Wed 13/57:15 p.m.
YYZ
-
BFS
1 stop15h 40m
Multiple Airlines
Wed 27/58:30 a.m.
BFS
-
YYZ
3 stops37h 45m
Multiple Airlines
Deal found 5/4C$ 841
Fri 22/511:50 p.m.
YYZ
-
BFS
1 stop16h 10m
Multiple Airlines
Fri 29/510:10 p.m.
BFS
-
YYZ
1 stop22h 50m
Multiple Airlines
Deal found 7/4C$ 869
Sat 23/510:05 p.m.
YUL
-
BFS
1 stop28h 40m
Multiple Airlines
Sat 30/56:20 a.m.
BFS
-
YUL
1 stop12h 55m
Multiple Airlines
Deal found 8/4C$ 872
Sat 30/56:00 p.m.
YUL
-
BFS
2 stops23h 40m
Multiple Airlines
Fri 12/66:05 a.m.
BFS
-
YUL
1 stop13h 10m
Multiple Airlines
Deal found 6/4C$ 892
Fri 22/56:55 a.m.
YOW
-
BFS
2 stops33h 55m
Multiple Airlines
Fri 29/57:20 p.m.
BFS
-
YOW
3 stops34h 00m
Multiple Airlines
Deal found 7/4C$ 910
Tue 1/96:45 a.m.
YUL
-
BFS
2 stops28h 35m
Multiple Airlines
Tue 8/99:15 p.m.
BFS
-
YUL
3 stops32h 10m
Multiple Airlines
Deal found 7/4C$ 974
Thu 21/54:00 p.m.
YOW
-
BFS
2 stops25h 50m
Multiple Airlines
Thu 28/58:05 p.m.
BFS
-
YOW
2 stops28h 55m
Multiple Airlines
Deal found 5/4C$ 978
Fri 15/56:25 p.m.
YOW
-
BFS
2 stops20h 25m
Multiple Airlines
Mon 18/59:55 p.m.
BFS
-
YOW
3 stops31h 25m
Multiple Airlines
Deal found 7/4C$ 1,096

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 10 April 2026.

Round-trip from

C$ 755

One-way from

C$ 339

Popular in

July

Cheapest in

April

Average price

C$ 913
5/5-12/5
  • 5/5-12/5
  • 6 total stops
  • 54h 00m total
  • Ontario to Belfast
Search Deals
24/5
  • 24/5
  • 1 total stop
  • 17h 55m total
  • Ontario to Belfast
Search Deals
Highest demand for flights based on searches. 28% potential increase in price (C$ 962 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 19% potential price decrease (C$ 387 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

Cheapflights Fare Finder

 
Customize 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 629,999 searches. Data last updated 10 April 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 round-trip

MontrealBelfast

YUL - BFS

YULBFS

Montreal Pierre Elliott Trudeau Intl

Thu 7/5

10:05 p.m.-11:25 p.m.

1 stop20h 20m

Belfast Intl

Thu 14/5

1:00 p.m.-2:15 p.m.

1 stop30h 15m

C$ 811

TorontoBelfast

YYZ - BFS

YYZBFS

Toronto Pearson Intl

Mon 4/5

7:15 p.m.-12:30 p.m.

1 stop12h 15m

Belfast Intl

Mon 11/5

6:05 p.m.-11:00 a.m.

1 stop21h 55m

C$ 814

TorontoBelfast

YYZ - BFS

YYZBFS

Toronto Pearson Intl

Mon 4/5

7:15 p.m.-4:15 p.m.

1 stop16h 00m

Belfast Intl

Fri 8/5

5:05 p.m.-9:45 p.m.

3 stops33h 40m

C$ 833

TorontoBelfast

YYZ - BFS

YYZBFS

Toronto Pearson Intl

Wed 13/5

7:15 p.m.-3:55 p.m.

1 stop15h 40m

Belfast Intl

Wed 27/5

8:30 a.m.-5:15 p.m.

3 stops37h 45m

C$ 841

TorontoBelfast

YYZ - BFS

YYZBFS

Toronto Pearson Intl

Fri 22/5

11:50 p.m.-9:00 p.m.

1 stop16h 10m

Belfast Intl

Fri 29/5

10:10 p.m.-4:00 p.m.

1 stop22h 50m

C$ 869

MontrealBelfast

YUL - BFS

YULBFS

Montreal Pierre Elliott Trudeau Intl

Sat 23/5

10:05 p.m.-7:45 a.m.

1 stop28h 40m

Belfast Intl

Sat 30/5

6:20 a.m.-2:15 p.m.

1 stop12h 55m

C$ 872
Quickest round-trip

TorontoBelfast

YYZ - BFS

YYZBFS

Toronto Pearson Intl

Tue 5/5

11:50 p.m.-9:20 p.m.

1 stop16h 30m

Belfast Intl

Tue 12/5

7:00 a.m.-4:00 p.m.

1 stop14h 00m

C$ 881

MontrealBelfast

YUL - BFS

YULBFS

Montreal Pierre Elliott Trudeau Intl

Sat 30/5

6:00 p.m.-10:40 p.m.

2 stops23h 40m

Belfast Intl

Fri 12/6

6:05 a.m.-2:15 p.m.

1 stop13h 10m

C$ 892

OttawaBelfast

YOW - BFS

YOWBFS

Ottawa

Fri 22/5

6:55 a.m.-9:50 p.m.

2 stops33h 55m

Belfast Intl

Fri 29/5

7:20 p.m.-12:20 a.m.

3 stops34h 00m

C$ 910

TorontoBelfast

YYZ - BFS

YYZBFS

Toronto Pearson Intl

Wed 16/9

7:15 p.m.-5:05 p.m.

1 stop16h 50m

Belfast Intl

Tue 22/9

9:15 p.m.-11:00 a.m.

1 stop18h 45m

C$ 949

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/4

Showing 1-10 of 34 resultsSorted by cheapest first
1
2
3
4

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 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 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?

    When deciding which route to take from Region of Ontario to Belfast Intl Airport consider Toronto Pearson Intl - Belfast Intl, Toronto Island - Belfast Intl or Montreal Pierre Elliott Trudeau Intl - Belfast Intl as they are the most popular.

  • 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 vacation 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top airline flying from Ontario to Belfast Intl

Discover the top airline that operate flights from Ontario to Belfast Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 10 April 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapestC$ 822AverageC$ 1,214FlexibilityNo cancel feeOn-time70%
Search British Airways flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Ontario to Belfast Intl?

When you search for this flight from Ontario to Belfast Intl, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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

Millions of users choose and trust Cheapflights to book the best flight deals from Ontario to Belfast Intl for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Certainly. Search results for flights to Belfast Intl from Ontario shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Not ready to book yet? You can track prices for flights from Ontario to Belfast Intl on Cheapflights with our Price Alert feature and get notified when better prices are available.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.