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Cheap flights from Ontario to Northern Ireland from £657

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 9/7. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BFS
2 Aug — 9 Aug1
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 3 July 2026.

Sun 18/1016:29
ONT
-
BHD
2 stops18h 16m
British Airways
Sat 24/1010:05
BHD
-
ONT
2 stops21h 47m
British Airways
Deal found 29/6£706
Sun 8/1109:59
ONT
-
BHD
2 stops24h 41m
British Airways
Thu 12/1109:05
BHD
-
ONT
2 stops22h 52m
British Airways
Deal found 30/6£837
Mon 28/1212:55
ONT
-
BHD
2 stops19h 10m
British Airways
Tue 5/119:25
BHD
-
ONT
2 stops34h 36m
British Airways
Deal found 30/6£863
Sun 16/812:33
ONT
-
BHD
2 stops18h 02m
British Airways
Mon 24/809:40
BHD
-
ONT
2 stops21h 19m
British Airways
Deal found 2/7£903
Wed 16/912:37
ONT
-
BHD
2 stops16h 58m
British Airways
Wed 23/910:05
BHD
-
ONT
2 stops18h 04m
British Airways
Deal found 1/7£933
Mon 28/1207:10
ONT
-
BHD
3 stops20h 45m
Multiple Airlines
Tue 5/111:25
BHD
-
ONT
2 stops18h 49m
Multiple Airlines
Deal found 2/7£1,251
Sun 2/817:10
ONT
-
BHD
2 stops15h 45m
KLM
Tue 18/809:50
BHD
-
ONT
2 stops18h 03m
KLM
Deal found 29/6£2,282
Fri 31/717:10
ONT
-
BHD
2 stops15h 45m
KLM
Fri 7/809:50
BHD
-
ONT
2 stops20h 02m
KLM
Deal found 1/7£3,201
Thu 17/912:37
ONT
-
BHD
2 stops18h 53m
British Airways
Tue 22/909:40
BHD
-
ONT
2 stops18h 29m
British Airways
Deal found 1/7£5,809
Wed 16/917:15
ONT
-
BHD
2 stops15h 40m
KLM
Tue 22/909:50
BHD
-
ONT
2 stops18h 17m
KLM
Deal found 30/6£11,931

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 3 July 2026.

Round-trip from

£706

One-way from

£657
British Airways
  • British Airways
  • 18/10-24/10
  • 4 total stops
  • 40h 03m total
  • Ontario to Northern Ireland
Search Deals
British Airways
  • British Airways
  • 9/7
  • 2 total stops
  • 20h 36m total
  • Ontario to Northern Ireland
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 3 July 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

Sun 8/11

09:59-18:40

2 stops24h 41m

Belfast City

Thu 12/11

09:05-23:57

2 stops22h 52m

£837

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Mon 28/12

12:55-18:35

2 stops21h 40m

Belfast City

Tue 5/1

19:25-22:01

2 stops34h 36m

£863

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Mon 28/12

07:10-11:55

3 stops20h 45m

Belfast City

Tue 5/1

11:25-22:14

2 stops18h 49m

£1,251
Fastest return journey

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Sun 2/8

17:10-16:55

2 stops15h 45m

Belfast City

Tue 18/8

09:50-19:53

2 stops18h 03m

£2,282

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Fri 31/7

17:10-16:55

2 stops15h 45m

Belfast City

Fri 7/8

09:50-21:52

2 stops20h 02m

£3,201

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Thu 17/9

12:37-15:30

2 stops18h 53m

Belfast City

Tue 22/9

09:40-20:09

2 stops18h 29m

£5,809

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Wed 16/9

17:15-16:55

2 stops15h 40m

Belfast City

Tue 22/9

09:50-20:07

2 stops18h 17m

£11,931
Cheapest one-way

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Thu 9/7

05:34-10:10

2 stops20h 36m

£657

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Mon 24/8

12:33-15:30

2 stops18h 57m

£807
Fastest single journey

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Fri 28/8

16:07-18:10

2 stops18h 03m

£882

Flights are sorted by cheapest return flights first.

Deals found on 30/6

Sorted by cheapest first

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
No data available for this route at this time. Please check back soon.

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 24h 41m. British Airways provides one of the quickest options available for as low as £837. 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.

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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