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Cheap flights from Northern Ireland to Ontario from £571

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 20/11. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — YYZ
7 Dec — 14 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Northern Ireland to Ontario

Keep the following information in mind while searching for Northern Ireland to Ontario flight deals. Data was last updated 7 November 2025.

Round-trip from

£571

Popular in

August

Cheapest in

May

Average price

£629
American Airlines
  • American Airlines
  • 20/11-24/11
  • 3 total stops
  • 48h 49m total
  • Northern Ireland to Ontario
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (£52 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£20 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Find flight deals from Northern Ireland to Ontario

Enter your travel dates to find the best prices.

Cheapest flights from Northern Ireland to Ontario
Explore the most affordable flight options available from Northern Ireland to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 7 November 2025.

Thu 20/1106:35BHD - YUL
2 stops36h 14mAmerican Airlines
Mon 24/1120:40YUL - BHD
1 stop12h 35mAmerican Airlines
Deal found 5/11£571
Thu 27/1109:05BHD - YYZ
2 stops37h 18mAmerican Airlines
Mon 1/1218:20YYZ - BHD
2 stops14h 55mAmerican Airlines
Deal found 5/11£582
Thu 13/1109:05BHD - YUL
1 stop14h 40mAmerican Airlines
Mon 17/1115:59YUL - BHD
2 stops13h 41mAmerican Airlines
Deal found 5/11£600
Thu 20/1117:20BHD - YUL
1 stop29h 00mVirgin Atlantic
Mon 24/1119:10YUL - BHD
1 stop20h 50mVirgin Atlantic
Deal found 5/11£615
Sun 21/1215:45BFS - YUL
1 stop25h 55mMultiple Airlines
Sun 28/1218:20YUL - BFS
1 stop14h 50mMultiple Airlines
Deal found 6/11£671
Thu 27/1106:30BHD - YYZ
1 stop14h 10mVirgin Atlantic
Mon 1/1215:38YYZ - BHD
2 stops20h 12mVirgin Atlantic
Deal found 5/11£681
Sat 20/1209:40BFS - YUL
1 stop32h 00mMultiple Airlines
Sat 27/1220:10YUL - BFS
1 stop18h 45mMultiple Airlines
Deal found 5/11£762
Mon 22/1206:30BFS - YYZ
1 stop13h 30mMultiple Airlines
Mon 29/1221:35YYZ - BFS
1 stop29h 20mMultiple Airlines
Deal found 7/11£777
Sat 20/1220:00BFS - YYZ
3 stops28h 50mMultiple Airlines
Sat 27/1221:35YYZ - BFS
2 stops19h 20mMultiple Airlines
Deal found 5/11£860
Thu 27/1117:20BHD - YYZ
1 stop27h 20mDelta
Mon 1/1217:50YYZ - BHD
1 stop18h 00mDelta
Deal found 5/11£887

Cheapflights Fare Finder

 
Customise your flight search to find flights from Northern Ireland to Ontario 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 7 November 2025.
Use the filters below to find and compare flights from Northern Ireland to Ontario that are best for you.

Fly from

Northern Ireland

Fly to

Ontario

Route

Depart

Return

Price

BelfastMontreal

BHD - YUL

BHDYUL

Belfast City

Thu 20/11

06:35-13:49

2 stops36h 14m

Montreal Pierre Elliott Trudeau Intl

Mon 24/11

20:40-14:15

1 stop12h 35m

£571

BelfastToronto

BHD - YYZ

BHDYYZ

Belfast City

Thu 27/11

09:05-17:23

2 stops37h 18m

Toronto Pearson Intl

Mon 1/12

18:20-14:15

2 stops14h 55m

£582

BelfastMontreal

BHD - YUL

BHDYUL

Belfast City

Thu 20/11

17:20-17:20

1 stop29h 00m

Montreal Pierre Elliott Trudeau Intl

Mon 24/11

19:10-21:00

1 stop20h 50m

£615

BelfastMontreal

BFS - YUL

BFSYUL

Belfast Intl

Sun 21/12

15:45-12:40

1 stop25h 55m

Montreal Pierre Elliott Trudeau Intl

Sun 28/12

18:20-14:10

1 stop14h 50m

£671

BelfastToronto

BHD - YYZ

BHDYYZ

Belfast City

Thu 27/11

06:30-15:40

1 stop14h 10m

Toronto Pearson Intl

Mon 1/12

15:38-16:50

2 stops20h 12m

£681

BelfastMontreal

BHD - YUL

BHDYUL

Belfast City

Thu 20/11

17:20-17:20

1 stop29h 00m

Montreal Pierre Elliott Trudeau Intl

Mon 24/11

19:10-21:00

1 stop20h 50m

£719

BelfastMontreal

BFS - YUL

BFSYUL

Belfast Intl

Sat 20/12

09:40-12:40

1 stop32h 00m

Montreal Pierre Elliott Trudeau Intl

Sat 27/12

20:10-19:55

1 stop18h 45m

£762

BelfastToronto

BFS - YYZ

BFSYYZ

Belfast Intl

Mon 22/12

06:30-15:00

1 stop13h 30m

Toronto Pearson Intl

Mon 29/12

21:35-07:55

1 stop29h 20m

£777

BelfastToronto

BFS - YYZ

BFSYYZ

Belfast Intl

Sat 20/12

20:00-19:50

3 stops28h 50m

Toronto Pearson Intl

Sat 27/12

21:35-21:55

2 stops19h 20m

£860

BelfastToronto

BHD - YYZ

BHDYYZ

Belfast City

Thu 27/11

17:20-15:40

1 stop27h 20m

Toronto Pearson Intl

Mon 1/12

17:50-16:50

1 stop18h 00m

£887

Flights are sorted by cheapest return flights first.

Deals found on 6/11

Showing 1-10 of 11 results
1
2

Best time to book a flight from Northern Ireland to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Northern Ireland 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 Northern Ireland to Ontario

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

Currently, September is the cheapest month in which you can book a flight from Northern Ireland to Region of Ontario (average of £423). Flying from Northern Ireland to Region of Ontario in December is currently the most expensive (average of £738). 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 NIR to ON?

Find hourly flight availability from Northern Ireland to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 7 November 2025.

It’s typically best to fly out from Northern Ireland to Region of Ontario in the evening. Doing so could potentially save you 30% on the flight price compared to flying in the morning, which is usually more expensive.

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated 7 November 2025.
Get a feel of what it's like to fly with British Airways from Northern Ireland to Ontario by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
British Airways
6.7
Okay
7,500 reviews
Check prices

Boarding

6.9

Overall

6.7

Crew

7.6

Food

6.3

Comfort

6.7

Entertainment

6.4

Reviews

1 / 20
6.0
Good

Roxanne,Sept 2025

LHR - IAD

Food was mediocre. Couldn't use headphones because no information on how to use. Staff paid so much attention on a family with a baby . They got VIP treatment.
British Airways
6.7
Okay
7,500 reviews
British Airways
6.7
Okay
7,500 reviews
Check prices

Boarding

6.9

Overall

6.7

Crew

7.6

Food

6.3

Comfort

6.7

Entertainment

6.4

Reviews

1 / 20
6.0
Good

Roxanne,Sept 2025

LHR - IAD

Food was mediocre. Couldn't use headphones because no information on how to use. Staff paid so much attention on a family with a baby . They got VIP treatment.

Related info for your journey

Find useful and relevant information for your journey from Northern Ireland to Ontario. 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 Northern Ireland to Region of Ontario?

    Departing from Northern Ireland to Region of Ontario will take you 14h 10m. The distance between Northern Ireland and Region of Ontario is about 3254 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Northern Ireland to Ontario 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 Northern Ireland to Region of Ontario?

    Currently, September is the cheapest month in which you can book a flight from Northern Ireland to Region of Ontario (average of £423). Flying from Northern Ireland to Region of Ontario in December is currently the most expensive (average of £738). 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 Northern Ireland to Ontario

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

Discover the top airline that operate flights from Northern Ireland to Ontario. 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 858,174 searches. Data last updated 7 November 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£431Average£568FlexibilityNo cancel feeOn-time70%
Search British Airways flights

Fly with Cheapflights

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

How does Cheapflights help users find flights from Northern Ireland to Ontario?

Deals for Northern Ireland to Ontario 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 Northern Ireland to Ontario?

Cheapflights simply makes it quick and affordable to book flights from Northern Ireland to Ontario by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Northern Ireland to Ontario with no change fees?

Need flexible booking options for your flight to Ontario from Northern Ireland? 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 Northern Ireland to Ontario become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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