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Cheap flights from Ontario to Northern Ireland from £222

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 24/8. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BFS
21 Apr — 28 Apr1
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 22 March 2026.

Tue 18/816:54
ONT
-
BHD
2 stops18h 46m
British Airways
Tue 1/909:40
BHD
-
ONT
2 stops19h 28m
British Airways
Deal found 17/3£618
Mon 17/813:00
ONT
-
BHD
2 stops21h 45m
British Airways
Tue 1/909:40
BHD
-
ONT
2 stops21h 26m
British Airways
Deal found 17/3£626
Thu 5/1116:47
ONT
-
BHD
2 stops15h 53m
British Airways
Thu 12/1111:05
BHD
-
ONT
2 stops18h 54m
British Airways
Deal found 18/3£673
Sun 26/410:59
ONT
-
BHD
2 stops18h 26m
British Airways
Tue 12/509:40
BHD
-
ONT
2 stops19h 14m
British Airways
Deal found 18/3£685
Sun 16/816:54
ONT
-
BHD
2 stops17h 51m
British Airways
Fri 4/906:30
BHD
-
ONT
2 stops19h 47m
British Airways
Deal found 17/3£747
Mon 6/412:22
ONT
-
BHD
2 stops22h 23m
British Airways
Tue 14/420:25
BHD
-
ONT
2 stops27h 57m
British Airways
Deal found 20/3£753
Sat 1/812:35
ONT
-
BHD
2 stops18h 30m
British Airways
Fri 14/809:35
BHD
-
ONT
2 stops19h 33m
British Airways
Deal found 17/3£756
Mon 7/916:54
ONT
-
BHD
2 stops17h 51m
British Airways
Mon 21/909:40
BHD
-
ONT
2 stops19h 28m
British Airways
Deal found 21/3£779
Sat 15/823:59
ONT
-
BHD
2 stops26h 31m
American Airlines
Fri 4/906:30
BHD
-
ONT
2 stops19h 47m
American Airlines
Deal found 17/3£783
Sun 6/1216:47
ONT
-
BHD
2 stops16h 03m
British Airways
Thu 10/1211:05
BHD
-
ONT
2 stops19h 14m
British Airways
Deal found 19/3£785
Tue 7/412:19
ONT
-
BHD
2 stops22h 36m
British Airways
Sun 19/419:10
BHD
-
ONT
2 stops31h 27m
British Airways
Deal found 21/3£791
Wed 2/1206:30
ONT
-
BHD
2 stops26h 05m
British Airways
Sun 6/1209:10
BHD
-
ONT
2 stops22h 45m
British Airways
Deal found 17/3£822

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 22 March 2026.

Round-trip from

£618

One-way from

£222

Popular in

June

Cheapest in

August

Average price

£740
British Airways
  • British Airways
  • 18/8-1/9
  • 4 total stops
  • 38h 14m total
  • Ontario to Northern Ireland
Search Deals
British Airways
  • British Airways
  • 24/8
  • 2 total stops
  • 18h 31m total
  • Ontario to Northern Ireland
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (£122 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£22 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 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 858,174 searches. Data last updated 22 March 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 return flight

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Mon 17/8

16:54-18:45

2 stops17h 51m

Belfast City

Thu 3/9

09:35-21:08

2 stops19h 33m

£747

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Wed 19/8

16:54-18:45

2 stops17h 51m

Belfast City

Fri 4/9

06:30-18:17

2 stops19h 47m

£747

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Tue 18/8

16:54-18:55

2 stops18h 01m

Belfast City

Fri 4/9

06:30-18:17

2 stops19h 47m

£747

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Wed 19/8

16:54-18:45

2 stops17h 51m

Belfast City

Thu 3/9

09:35-21:08

2 stops19h 33m

£747

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Sun 16/8

16:54-18:45

2 stops17h 51m

Belfast City

Tue 1/9

20:25-23:06

2 stops34h 41m

£747

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Mon 7/9

16:54-18:45

2 stops17h 51m

Belfast City

Mon 21/9

09:40-21:08

2 stops19h 28m

£779

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Sat 15/8

23:59-10:30

2 stops26h 31m

Belfast City

Wed 2/9

06:30-18:17

2 stops19h 47m

£783

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Tue 7/4

12:19-18:55

2 stops22h 36m

Belfast City

Sun 19/4

19:10-18:37

2 stops31h 27m

£791

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Tue 12/5

16:52-18:55

2 stops18h 03m

Belfast City

Tue 26/5

09:40-19:56

2 stops18h 16m

£970
Fastest return journey

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Sun 5/7

12:39-14:35

2 stops17h 56m

Belfast City

Tue 28/7

09:40-19:59

2 stops18h 19m

£974

Flights are sorted by cheapest return flights first.

Deals found on 18/3

Showing 1-10 of 12 resultsSorted by cheapest first
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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 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 Ontario to Northern Ireland

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

Currently, March is the cheapest month in which you can book a flight from Ontario to Northern Ireland (average of £437). Flying from Ontario to Northern Ireland in June is currently the most expensive (average of £695). 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 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.

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

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

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

    A quick flight from Ontario to Northern Ireland can take about 17h 51m. British Airways provides one of the quickest options available for as low as £747. There are 5095 mi between 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 holiday 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 Ontario to Northern Ireland?

    Currently, March is the cheapest month in which you can book a flight from Ontario to Northern Ireland (average of £437). Flying from Ontario to Northern Ireland in June is currently the most expensive (average of £695). 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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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?

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 Ontario to Northern Ireland.

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from Ontario to Northern Ireland flexibly with Cheapflights today.

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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