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Cheap flights from Ontario to Northern Ireland from C$ 627

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 31/12. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — BFS
18 Dec — 25 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap 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 18 November 2025.

Round-trip from

C$ 888

One-way from

C$ 627

Popular in

July

Cheapest in

October

Average price

C$ 2,340
12/5-18/5
  • 12/5-18/5
  • 2 total stops
  • 49h 30m total
  • Ontario to Northern Ireland
Search Deals
Aer Lingus
  • Aer Lingus
  • 31/12
  • 2 total stops
  • 22h 25m total
  • Ontario to Northern Ireland
Search Deals
Highest demand for flights based on searches. 26% potential increase in price (C$ 885 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 17% potential price decrease (C$ 358 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Find 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 18 November 2025.

Tue 18/1110:30 a.m.YYZ - BHD
2 stops19h 00mMultiple Airlines
Tue 25/1111:25 a.m.BHD - YYZ
2 stops15h 33mMultiple Airlines
Deal found 17/11C$ 1,012
Tue 18/119:35 p.m.YYZ - BFS
1 stop31h 30mMultiple Airlines
Tue 25/118:55 p.m.BFS - YYZ
1 stop23h 05mMultiple Airlines
Deal found 17/11C$ 1,049
Tue 9/128:00 p.m.YYZ - BFS
2 stops17h 50mMultiple Airlines
Tue 16/128:55 p.m.BFS - YYZ
3 stops46h 50mMultiple Airlines
Deal found 16/11C$ 1,073
Tue 18/1110:05 p.m.YYZ - BHD
1 stop13h 40mBritish Airways
Tue 25/116:35 a.m.BHD - YYZ
1 stop13h 15mBritish Airways
Deal found 17/11C$ 1,123
Wed 19/115:40 p.m.YYZ - BHD
1 stop10h 30mBritish Airways
Tue 6/101:40 p.m.BHD - YYZ
1 stop31h 25mBritish Airways
Deal found 17/11C$ 1,134
Tue 9/124:12 p.m.YYZ - BHD
2 stops14h 18mAmerican Airlines
Tue 16/126:35 a.m.BHD - YYZ
2 stops15h 52mAmerican Airlines
Deal found 16/11C$ 1,146
Wed 19/114:44 p.m.YYZ - BHD
2 stops16h 31mAmerican Airlines
Tue 6/109:35 a.m.BHD - YYZ
1 stop15h 35mAmerican Airlines
Deal found 17/11C$ 1,168
Wed 19/119:35 p.m.YYZ - BFS
1 stop28h 50mMultiple Airlines
Tue 6/108:15 p.m.BFS - YYZ
2 stops24h 35mMultiple Airlines
Deal found 17/11C$ 1,214
Sun 30/1110:45 p.m.YYZ - BFS
2 stops16h 25mMultiple Airlines
Sun 14/125:45 a.m.BFS - YYZ
3 stops19h 05mMultiple Airlines
Deal found 16/11C$ 1,238
Wed 26/1112:00 p.m.YYZ - BFS
3 stops22h 30mMultiple Airlines
Sun 30/1111:05 p.m.BFS - YYZ
2 stops22h 10mMultiple Airlines
Deal found 15/11C$ 1,290
Wed 10/129:35 p.m.YYZ - BFS
1 stop11h 10mMultiple Airlines
Sat 20/1212:45 p.m.BFS - YYZ
3 stops37h 30mMultiple Airlines
Deal found 17/11C$ 1,349
Wed 31/129:35 p.m.YYZ - BFS
1 stop19h 45mMultiple Airlines
Wed 7/18:50 p.m.BFS - YYZ
1 stop23h 10mMultiple Airlines
Deal found 15/11C$ 1,350

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 18 November 2025.
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

TorontoBelfast

YYZ - BFS

YYZBFS

Toronto Pearson Intl

Tue 12/5

11:50 p.m.-7:40 a.m.

1 stop26h 50m

Belfast Intl

Mon 18/5

10:20 p.m.-4:00 p.m.

1 stop22h 40m

C$ 888

TorontoBelfast

YYZ - BFS

YYZBFS

Toronto Pearson Intl

Fri 8/5

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

1 stop16h 10m

Belfast Intl

Fri 22/5

8:25 p.m.-4:00 p.m.

1 stop24h 35m

C$ 917

TorontoBelfast

YYZ - BHD

YYZBHD

Toronto Pearson Intl

Sun 12/4

10:35 p.m.-8:25 p.m.

1 stop16h 50m

Belfast City

Wed 22/4

7:05 a.m.-4:00 p.m.

1 stop13h 55m

C$ 990

MontrealBelfast

YUL - BHD

YULBHD

Montreal Pierre Elliott Trudeau Intl

Wed 21/1

8:40 p.m.-2:15 p.m.

1 stop12h 35m

Belfast City

Sun 25/1

3:10 p.m.-10:44 p.m.

2 stops36h 34m

C$ 994

TorontoBelfast

YYZ - BFS

YYZBFS

Toronto Pearson Intl

Sun 12/4

10:35 p.m.-2:35 p.m.

1 stop11h 00m

Belfast Intl

Wed 22/4

6:10 a.m.-4:00 p.m.

1 stop14h 50m

C$ 1,015

MontrealBelfast

YUL - BHD

YULBHD

Montreal Pierre Elliott Trudeau Intl

Tue 13/1

8:40 p.m.-2:50 p.m.

1 stop13h 10m

Belfast City

Thu 22/1

5:45 p.m.-6:45 p.m.

1 stop30h 00m

C$ 1,025

MontrealBelfast

YUL - BHD

YULBHD

Montreal Pierre Elliott Trudeau Intl

Mon 12/1

8:40 p.m.-2:15 p.m.

1 stop12h 35m

Belfast City

Sat 24/1

11:35 a.m.-6:45 p.m.

1 stop12h 10m

C$ 1,025

MontrealBelfast

YUL - BHD

YULBHD

Montreal Pierre Elliott Trudeau Intl

Fri 23/1

8:30 p.m.-8:30 p.m.

1 stop19h 00m

Belfast City

Fri 30/1

7:20 a.m.-6:45 p.m.

1 stop16h 25m

C$ 1,026

MontrealBelfast

YUL - BHD

YULBHD

Montreal Pierre Elliott Trudeau Intl

Fri 16/1

8:30 p.m.-7:15 p.m.

1 stop17h 45m

Belfast City

Mon 19/1

11:30 a.m.-6:45 p.m.

1 stop12h 15m

C$ 1,028

TorontoBelfast

YYZ - BFS

YYZBFS

Toronto Pearson Intl

Tue 17/3

8:15 p.m.-10:20 a.m.

1 stop10h 05m

Belfast Intl

Sat 21/3

10:25 p.m.-12:40 p.m.

1 stop18h 15m

C$ 1,028

Flights are sorted by cheapest round-trip flights first.

Deals found on 17/11

Showing 1-10 of 38 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

What is the cheapest month to book a flight from Region of Ontario to Northern Ireland?

Currently, September is the cheapest month in which you can book a flight from Region of Ontario to Northern Ireland (average of C$ 833). Flying from Region of Ontario to Northern Ireland in July is currently the most expensive (average of C$ 1,404). 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.

What is the cheapest time of day to fly from ON to NIR?

Find hourly flight availability from Ontario to Northern Ireland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 18 November 2025.

It’s typically best to fly out from Region of Ontario to Northern Ireland in the evening. Doing so could potentially save you 19% on the flight price compared to flying at noon, which is usually more expensive.

How much does it cost to fly round-trip from Region of Ontario to Northern Ireland?

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 18 November 2025.
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
7,532 reviews
Check prices

Boarding

6.9

Comfort

6.7

Crew

7.6

Food

6.3

Overall

6.7

Entertainment

6.4

Reviews

1 / 20
2.0
Mediocre

Anonymous,Aug 2025

ALG - LGW

Didn't like anything from this flight starting with the lady at the counter. Nasty attitude.
British Airways
6.7
Okay
7,532 reviews
British Airways
6.7
Okay
7,532 reviews
Check prices

Boarding

6.9

Comfort

6.7

Crew

7.6

Food

6.3

Overall

6.7

Entertainment

6.4

Reviews

1 / 20
2.0
Mediocre

Anonymous,Aug 2025

ALG - LGW

Didn't like anything from this flight starting with the lady at the counter. Nasty attitude.

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$ 994, American Airlines can have you in Northern Ireland from Region of Ontario in 12h 35m. There are 4752 km between Region of Ontario and Northern Ireland. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the cheapest airlines to fly from Region of Ontario to Northern Ireland one-way?

    To fly one-way, consider booking your trip with Aer Lingus, which is currently one of the cheapest options available, starting at C$ 627. American Airlines flights start at C$ 1,136 while deals on Delta start at C$ 1,611 one-way.

  • 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.

  • What is the cheapest month to book a flight from Region of Ontario to Northern Ireland?

    Currently, September is the cheapest month in which you can book a flight from Region of Ontario to Northern Ireland (average of C$ 833). Flying from Region of Ontario to Northern Ireland in July is currently the most expensive (average of C$ 1,404). 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

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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 18 November 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapestC$ 837AverageC$ 1,312FlexibilityNo 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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