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Cheap flights from Ontario to Northern Ireland 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
11 May — 18 May1
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 11 April 2026.

Wed 3/66:55 a.m.
YOW
-
BFS
2 stops28h 00m
Multiple Airlines
Wed 10/63:40 p.m.
BFS
-
YOW
3 stops37h 40m
Multiple Airlines
Deal found 10/4C$ 781
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$ 810
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$ 813
Sun 17/57:15 p.m.
YYZ
-
BFS
1 stop18h 35m
Multiple Airlines
Sun 24/58:35 a.m.
BFS
-
YYZ
1 stop31h 25m
Multiple Airlines
Deal found 10/4C$ 819
Sun 7/610:05 p.m.
YYZ
-
BHD
1 stop8h 50m
Multiple Airlines
Sun 21/68:10 p.m.
BHD
-
YYZ
3 stops42h 50m
Multiple Airlines
Deal found 6/4C$ 820
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$ 832
Thu 7/510:05 p.m.
YUL
-
BHD
1 stop14h 45m
Multiple Airlines
Thu 14/53:25 p.m.
BHD
-
YUL
1 stop27h 50m
Multiple Airlines
Deal found 9/4C$ 849
Sun 17/57:15 p.m.
YYZ
-
BHD
1 stop11h 40m
Multiple Airlines
Sun 24/59:50 a.m.
BHD
-
YYZ
1 stop30h 10m
Multiple Airlines
Deal found 10/4C$ 852
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$ 868
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$ 871
Wed 3/66:25 p.m.
YOW
-
BHD
2 stops15h 05m
Multiple Airlines
Wed 10/66:10 p.m.
BHD
-
YOW
3 stops28h 25m
Multiple Airlines
Deal found 10/4C$ 874
Tue 5/511:50 p.m.
YYZ
-
BFS
1 stop16h 30m
Multiple Airlines
Tue 12/57:00 a.m.
BFS
-
YYZ
1 stop14h 00m
Multiple Airlines
Deal found 7/4C$ 881

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 11 April 2026.

Round-trip from

C$ 766

One-way from

C$ 339

Popular in

July

Cheapest in

April

Average price

C$ 913
18/5-2/6
  • 18/5-2/6
  • 4 total stops
  • 42h 50m total
  • Ontario to Northern Ireland
Search Deals
24/5
  • 24/5
  • 1 total stop
  • 17h 55m total
  • Ontario to Northern Ireland
Search Deals
Highest demand for flights based on searches. 28% potential increase in price (C$ 961 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 19% potential price decrease (C$ 386 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 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 11 April 2026.
Use the filters below to find and compare flights from Ontario to Northern Ireland 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$ 810

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$ 813

TorontoBelfast

YYZ - BFS

YYZBFS

Toronto Pearson Intl

Sun 17/5

7:15 p.m.-6:50 p.m.

1 stop18h 35m

Belfast Intl

Sun 24/5

8:35 a.m.-11:00 a.m.

1 stop31h 25m

C$ 821

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$ 832

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$ 868

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$ 871

OttawaBelfast

YOW - BHD

YOWBHD

Ottawa

Wed 3/6

6:25 p.m.-2:30 p.m.

2 stops15h 05m

Belfast City

Wed 10/6

6:10 p.m.-5:35 p.m.

3 stops28h 25m

C$ 874

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

TorontoBelfast

YYZ - BFS

YYZBFS

Toronto Pearson Intl

Fri 8/5

7:15 p.m.-9:50 p.m.

1 stop21h 35m

Belfast Intl

Fri 15/5

12:20 p.m.-11:00 a.m.

1 stop27h 40m

C$ 907

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/4

Showing 1-10 of 60 resultsSorted by cheapest first
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6

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 11 April 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
7,871 reviews
Check prices

Crew

7.7

Boarding

6.9

Entertainment

6.4

Overall

6.7

Comfort

6.8

Food

6.4

Reviews

1 / 20
4.0
Okay

Anonymous,Mar 2026

NCE - LHR

I was transferred to AA airlines with seating far away from my wif.
British Airways
6.7
Okay
7,871 reviews
British Airways
6.7
Okay
7,871 reviews
Check prices

Crew

7.7

Boarding

6.9

Entertainment

6.4

Overall

6.7

Comfort

6.8

Food

6.4

Reviews

1 / 20
4.0
Okay

Anonymous,Mar 2026

NCE - LHR

I was transferred to AA airlines with seating far away from my wif.

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$ 1,622, Delta can have you in Northern Ireland from Region of Ontario in 9h 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.
Pearson Intl to Heathrow flights
Pearson Intl to Gatwick flights
Vancouver Intl to Heathrow flights
Pearson Intl to Stansted flights
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Pearson Intl to Edinburgh flights
Calgary to Heathrow flights
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Abbotsford to Heathrow flights
Pearson Intl to Manchester flights
Pierre Elliott Trudeau Intl to Stansted flights
Pierre Elliott Trudeau Intl to London City flights
Halifax to Heathrow flights
Pearson Intl to Glasgow Intl flights
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Calgary to Gatwick flights
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Calgary to London City flights
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Winnipeg to Heathrow flights
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Calgary to Stansted flights
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Edmonton to Heathrow flights
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Edmonton to Gatwick flights
Vancouver Intl to Manchester flights
Toronto Island to Manchester flights
Calgary to Luton flights
Ottawa to Stansted flights
St. John's to Heathrow flights
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Halifax to Stansted flights
Winnipeg to Gatwick flights
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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 11 April 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapestC$ 822AverageC$ 1,227FlexibilityNo 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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