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Cheap flights from Ontario to Northern Ireland from C$ 389

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 20/3. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — BFS
7 Mar — 14 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Ontario to Northern Ireland

Enter your travel dates to find the best prices.

Cheapest flights from Ontario to Northern Ireland
Explore the most affordable flight options available from Ontario to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 5 February 2026.

Thu 19/39:10 p.m.
YUL
-
BFS
1 stop12h 30m
Multiple Airlines
Thu 26/36:25 p.m.
BFS
-
YUL
1 stop23h 10m
Multiple Airlines
Deal found 2/2C$ 807
Fri 6/39:35 p.m.
YYZ
-
BFS
1 stop30h 20m
Multiple Airlines
Sun 15/38:45 p.m.
BFS
-
YYZ
1 stop23h 15m
Multiple Airlines
Deal found 3/2C$ 844
Fri 6/39:35 p.m.
YYZ
-
BHD
1 stop11h 00m
Multiple Airlines
Sun 15/37:25 a.m.
BHD
-
YYZ
1 stop12h 35m
Multiple Airlines
Deal found 3/2C$ 897
Mon 25/510:45 p.m.
YUL
-
BFS
2 stops19h 35m
Multiple Airlines
Sat 30/59:40 p.m.
BFS
-
YUL
3 stops32h 00m
Multiple Airlines
Deal found 3/2C$ 958
Fri 17/48:25 p.m.
YYZ
-
BFS
1 stop18h 25m
Multiple Airlines
Fri 24/47:20 p.m.
BFS
-
YYZ
1 stop23h 10m
Multiple Airlines
Deal found 2/2C$ 971
Tue 24/27:15 p.m.
YYZ
-
BFS
1 stop10h 05m
Multiple Airlines
Wed 25/33:45 p.m.
BFS
-
YYZ
2 stops26h 30m
Multiple Airlines
Deal found 2/2C$ 1,010
Fri 17/48:45 p.m.
YYZ
-
BHD
2 stops18h 45m
Multiple Airlines
Fri 24/47:00 a.m.
BHD
-
YYZ
2 stops20h 05m
Multiple Airlines
Deal found 2/2C$ 1,012
Mon 23/29:35 p.m.
YYZ
-
BFS
1 stop15h 20m
Multiple Airlines
Thu 26/36:30 a.m.
BFS
-
YYZ
1 stop13h 30m
Multiple Airlines
Deal found 2/2C$ 1,025
Mon 23/29:35 p.m.
YYZ
-
BHD
1 stop17h 55m
Multiple Airlines
Thu 26/37:25 a.m.
BHD
-
YYZ
1 stop12h 35m
Multiple Airlines
Deal found 2/2C$ 1,028
Wed 15/410:35 p.m.
YYZ
-
BHD
1 stop15h 55m
Multiple Airlines
Sun 26/47:00 a.m.
BHD
-
YYZ
1 stop14h 00m
Multiple Airlines
Deal found 2/2C$ 1,032
Sun 22/29:35 p.m.
YYZ
-
BFS
1 stop17h 35m
Multiple Airlines
Thu 26/36:30 a.m.
BFS
-
YYZ
1 stop13h 30m
Multiple Airlines
Deal found 2/2C$ 1,034
Wed 15/410:35 p.m.
YYZ
-
BFS
1 stop16h 05m
Multiple Airlines
Thu 23/46:10 a.m.
BFS
-
YYZ
1 stop14h 50m
Multiple Airlines
Deal found 2/2C$ 1,035

Find flight deals from Ontario to Northern Ireland

Keep the following information in mind while searching for Ontario to Northern Ireland flight deals. Data was last updated 5 February 2026.

Round-trip from

C$ 807

One-way from

C$ 389

Popular in

July

Cheapest in

October

Average price

C$ 1,169
19/3-26/3
  • 19/3-26/3
  • 2 total stops
  • 35h 40m total
  • Ontario to Northern Ireland
Search Deals
20/3
  • 20/3
  • 2 total stops
  • 55h 40m total
  • Ontario to Northern Ireland
Search Deals
Highest demand for flights based on searches. 27% potential increase in price (C$ 867 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 17% potential price decrease (C$ 342 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Northern Ireland 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 5 February 2026.
Use the filters below to find and compare flights from Ontario to Northern Ireland that are best for you.

Fly from

Ontario

Fly to

Northern Ireland

Route

Depart

Return

Price

MontrealBelfast

YUL - BFS

YULBFS

Montreal Pierre Elliott Trudeau Intl

Thu 19/3

9:10 p.m.-1:40 p.m.

1 stop12h 30m

Belfast Intl

Thu 26/3

6:25 p.m.-1:35 p.m.

1 stop23h 10m

C$ 807

TorontoBelfast

YYZ - BFS

YYZBFS

Toronto Pearson Intl

Fri 6/3

9:35 p.m.-8:55 a.m.

1 stop30h 20m

Belfast Intl

Sun 15/3

8:45 p.m.-4:00 p.m.

1 stop23h 15m

C$ 844

TorontoBelfast

YYZ - BHD

YYZBHD

Toronto Pearson Intl

Fri 6/3

9:35 p.m.-1:35 p.m.

1 stop11h 00m

Belfast City

Sun 15/3

7:25 a.m.-4:00 p.m.

1 stop12h 35m

C$ 897

MontrealBelfast

YUL - BFS

YULBFS

Montreal Pierre Elliott Trudeau Intl

Mon 25/5

10:45 p.m.-11:20 p.m.

2 stops19h 35m

Belfast Intl

Sat 30/5

9:40 p.m.-12:40 a.m.

3 stops32h 00m

C$ 958

TorontoBelfast

YYZ - BFS

YYZBFS

Toronto Pearson Intl

Fri 17/4

8:25 p.m.-7:50 p.m.

1 stop18h 25m

Belfast Intl

Fri 24/4

7:20 p.m.-1:30 p.m.

1 stop23h 10m

C$ 971

TorontoBelfast

YYZ - BFS

YYZBFS

Toronto Pearson Intl

Mon 23/2

9:35 p.m.-5:55 p.m.

1 stop15h 20m

Belfast Intl

Thu 26/3

6:30 a.m.-4:00 p.m.

1 stop13h 30m

C$ 1,025

TorontoBelfast

YYZ - BHD

YYZBHD

Toronto Pearson Intl

Tue 24/2

9:35 p.m.-1:35 p.m.

1 stop11h 00m

Belfast City

Thu 26/3

7:25 a.m.-4:00 p.m.

1 stop12h 35m

C$ 1,028

TorontoBelfast

YYZ - BFS

YYZBFS

Toronto Pearson Intl

Wed 25/2

9:35 p.m.-1:45 p.m.

1 stop11h 10m

Belfast Intl

Thu 26/3

6:30 a.m.-4:00 p.m.

1 stop13h 30m

C$ 1,034

TorontoBelfast

YYZ - BFS

YYZBFS

Toronto Pearson Intl

Tue 24/2

9:35 p.m.-5:55 p.m.

1 stop15h 20m

Belfast Intl

Thu 26/3

6:30 a.m.-4:00 p.m.

1 stop13h 30m

C$ 1,034

TorontoBelfast

YYZ - BFS

YYZBFS

Toronto Pearson Intl

Sun 22/2

9:35 p.m.-8:10 p.m.

1 stop17h 35m

Belfast Intl

Thu 26/3

6:30 a.m.-4:00 p.m.

1 stop13h 30m

C$ 1,034

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/2

Showing 1-10 of 43 results
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Best time to book a flight from Ontario to Northern Ireland

Have a flexible travel schedule? Discover the best time to fly to Northern Ireland 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 Northern Ireland
No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Northern Ireland

Get insights into the airlines that provide service to Northern Ireland. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Northern Ireland. Reviews last updated 5 February 2026.
Check out reviews from past customers who have flown with British Airways from Ontario to Northern Ireland to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
British Airways
6.7
Okay
7,716 reviews
Check prices

Overall

6.7

Comfort

6.8

Food

6.4

Crew

7.6

Entertainment

6.4

Boarding

6.9

Reviews

1 / 20
8.0
Excellent

Lakshmi,Dec 2025

SFO - LHR

I had a great time on the flight with good entertainment and food. The staff was awesome. The only thing was there was a delay in boarding and takeoff from London. However, I was pleasantly surprised when the airline sent an apology for the few later landing in Mumbai. They did not have WiFi on board on the leg from London to Mumbai but that was okay for me. On the first leg from SF to London, a couple of seats ahead of me had issues with their display so they could not watch anything on their screens although the stewardess gas be them an option to use the WiFi on their devices. This did not affect me, however, so that was cool. I would recommend British Airways. This was my first time flying with them and I had a lovely flight.
British Airways
6.7
Okay
7,716 reviews
British Airways
6.7
Okay
7,716 reviews
Check prices

Overall

6.7

Comfort

6.8

Food

6.4

Crew

7.6

Entertainment

6.4

Boarding

6.9

Reviews

1 / 20
8.0
Excellent

Lakshmi,Dec 2025

SFO - LHR

I had a great time on the flight with good entertainment and food. The staff was awesome. The only thing was there was a delay in boarding and takeoff from London. However, I was pleasantly surprised when the airline sent an apology for the few later landing in Mumbai. They did not have WiFi on board on the leg from London to Mumbai but that was okay for me. On the first leg from SF to London, a couple of seats ahead of me had issues with their display so they could not watch anything on their screens although the stewardess gas be them an option to use the WiFi on their devices. This did not affect me, however, so that was cool. I would recommend British Airways. This was my first time flying with them and I had a lovely flight.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Northern Ireland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Region of Ontario to Northern Ireland?

    For as low as C$ 1,234, British Airways can have you in Northern Ireland from Region of Ontario in 17h 30m. There are 4752 km between Region of Ontario and Northern Ireland.

  • Can I find deals for flights from Ontario to Northern Ireland that include hotel bookings?

    Yes. In addition to deals on Ontario to Northern Ireland flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Northern Ireland?

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

  • Can I find deals for business class flights from Ontario to Northern Ireland?

    Yes. Cheapflights offers flight deals from Ontario to Northern Ireland 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

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Alternative routes for Ontario to Northern Ireland

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Ontario to Northern Ireland

Discover the top airline that operate flights from Ontario to Northern Ireland. 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 5 February 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapestC$ 815AverageC$ 1,240FlexibilityNo 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 Northern Ireland?

Deals for Ontario to Northern Ireland flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Ontario to Northern Ireland?

Millions of users choose and trust Cheapflights to book the best flight deals from Ontario to Northern Ireland 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 Northern Ireland with no change fees?

Yes! Cheapflights helps users easily find flights from Ontario to Northern Ireland with no change fees.

Can Cheapflights notify me if prices for flights from Ontario to Northern Ireland become cheaper?

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

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