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Cheap flights from Northern Ireland to Ontario from £600

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/12. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — ONT
18 Apr — 25 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap 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 19 March 2026.

Thu 3/1206:35
BHD
-
ONT
2 stops23h 44m
British Airways
Mon 7/1216:47
ONT
-
BHD
2 stops15h 18m
British Airways
Deal found 15/3£600
Thu 2/412:45
BHD
-
ONT
2 stops19h 14m
British Airways
Thu 9/414:08
ONT
-
BHD
2 stops20h 37m
British Airways
Deal found 18/3£622
Thu 19/306:30
BHD
-
ONT
2 stops17h 43m
KLM
Thu 26/313:20
ONT
-
BHD
2 stops20h 20m
KLM
Deal found 18/3£1,220
Fri 3/411:00
BHD
-
ONT
2 stops19h 07m
British Airways
Fri 10/416:52
ONT
-
BHD
2 stops17h 18m
British Airways
Deal found 18/3£1,408

Find 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 19 March 2026.

Round-trip from

£622

Popular in

December

Cheapest in

June

Average price

£469
British Airways
  • British Airways
  • 2/4-9/4
  • 4 total stops
  • 39h 51m total
  • Northern Ireland to Ontario
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (£98 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease (£29 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

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 19 March 2026.
Use the filters below to find and compare flights from Northern Ireland to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BelfastOntario

BHD - ONT

BHDONT

Belfast City

Thu 2/4

12:45-23:59

2 stops19h 14m

Ontario

Thu 9/4

14:08-18:45

2 stops20h 37m

£622
Fastest return journey

BelfastOntario

BHD - ONT

BHDONT

Belfast City

Fri 3/4

11:00-22:07

2 stops19h 07m

Ontario

Fri 10/4

16:52-18:10

2 stops17h 18m

£1,408
Cheapest one-way
Fastest single journey

BelfastOntario

BHD - ONT

BHDONT

Belfast City

Sun 5/7

13:10-21:44

2 stops16h 34m

£782

BelfastOntario

BHD - ONT

BHDONT

Belfast City

Thu 2/4

09:35-21:50

2 stops20h 15m

£875

Flights are sorted by cheapest return flights first.

Deals found on 18/3

Sorted by cheapest first

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 Ontario?

Currently, November is the cheapest month in which you can book a flight from Northern Ireland to Ontario (average of £358). Flying from Northern Ireland to Ontario in December is currently the most expensive (average of £506). 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.

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.

  • What airport do you fly into for flights to Ontario from Northern Ireland?

    Ontario (ONT), located 3.1 mi from the city center, is the airport you fly into when you book flights from Northern Ireland to Ontario.

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

    A quick flight from Northern Ireland to Ontario can take about 19h 14m. British Airways provides one of the quickest options available for as low as £622. Airlines will cover a distance of 5095 mi.

  • 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 Ontario?

    Currently, November is the cheapest month in which you can book a flight from Northern Ireland to Ontario (average of £358). Flying from Northern Ireland to Ontario in December is currently the most expensive (average of £506). 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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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?

When you search for this flight from Northern Ireland to Ontario, 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 Northern Ireland to Ontario?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Northern Ireland to Ontario.

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from Northern Ireland to Ontario, users can toggle the no change fees filter when performing a flight search.

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

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

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