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Cheap flights from Ontario to Northern Ireland from £244

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 11/8. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BFS
12 Jun — 19 Jun1
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 13 May 2026.

Tue 18/812:55
ONT
-
BHD
2 stops20h 00m
Delta
Wed 2/909:50
BHD
-
ONT
2 stops21h 54m
Delta
Deal found 12/5£766
Mon 9/1114:59
ONT
-
BHD
2 stops19h 36m
British Airways
Wed 11/1119:25
BHD
-
ONT
2 stops34h 58m
British Airways
Deal found 11/5£814
Sun 18/1006:00
ONT
-
BHD
2 stops27h 40m
British Airways
Wed 21/1010:05
BHD
-
ONT
2 stops21h 01m
British Airways
Deal found 12/5£815
Fri 6/1112:55
ONT
-
BHD
2 stops20h 20m
British Airways
Tue 10/1119:25
BHD
-
ONT
2 stops34h 58m
British Airways
Deal found 12/5£852
Mon 28/1216:45
ONT
-
BHD
2 stops17h 50m
British Airways
Tue 5/106:35
BHD
-
ONT
2 stops25h 11m
British Airways
Deal found 11/5£854
Sun 10/507:05
ONT
-
BHD
2 stops18h 15m
KLM
Mon 25/517:30
BHD
-
ONT
2 stops36h 18m
KLM
Deal found 8/5£884
Mon 28/1216:45
ONT
-
BHD
2 stops15h 20m
Multiple Airlines
Tue 5/107:00
BHD
-
ONT
3 stops24h 46m
Multiple Airlines
Deal found 12/5£1,038
Fri 29/512:40
ONT
-
BHD
2 stops18h 50m
British Airways
Wed 3/610:05
BHD
-
ONT
2 stops17h 51m
British Airways
Deal found 11/5£1,055
Fri 29/512:40
ONT
-
BHD
2 stops18h 50m
British Airways
Thu 4/609:35
BHD
-
ONT
2 stops18h 21m
British Airways
Deal found 12/5£1,056

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 13 May 2026.

Round-trip from

£766

One-way from

£244

Popular in

June

Cheapest in

October

Average price

£830
Delta
  • Delta
  • 18/8-2/9
  • 4 total stops
  • 41h 54m total
  • Ontario to Northern Ireland
Search Deals
11/8
  • 11/8
  • 2 total stops
  • 21h 13m total
  • Ontario to Northern Ireland
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (£124 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£25 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 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 13 May 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 18/10

06:00-17:40

2 stops27h 40m

Belfast City

Wed 21/10

10:05-23:06

2 stops21h 01m

£815

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Fri 6/11

12:55-17:15

2 stops20h 20m

Belfast City

Tue 10/11

19:25-22:23

2 stops34h 58m

£852

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Fri 29/5

12:40-15:30

2 stops18h 50m

Belfast City

Thu 4/6

09:35-19:56

2 stops18h 21m

£1,056

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Wed 17/6

12:37-18:45

2 stops22h 08m

Belfast City

Sun 5/7

20:10-22:34

2 stops34h 24m

£1,276

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Sat 30/5

12:41-15:05

2 stops18h 24m

Belfast City

Thu 4/6

09:35-22:36

2 stops21h 01m

£1,318

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Thu 11/6

12:41-15:30

2 stops18h 49m

Belfast City

Sun 21/6

20:10-22:39

2 stops34h 29m

£1,321
Fastest return journey

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Sun 19/7

17:10-16:55

2 stops15h 45m

Belfast City

Sun 26/7

09:50-21:50

2 stops20h 00m

£3,170

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Fri 22/5

16:57-16:55

2 stops15h 58m

Belfast City

Mon 25/5

09:50-21:48

2 stops19h 58m

£8,698

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Fri 22/5

12:40-15:30

2 stops18h 50m

Belfast City

Tue 26/5

09:40-19:56

2 stops18h 16m

£8,826

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Thu 18/6

07:05-09:20

2 stops18h 15m

Belfast City

Sun 5/7

09:50-21:48

2 stops19h 58m

£11,807

Flights are sorted by cheapest return flights first.

Deals found on 9/5

Showing 1-10 of 16 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
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 27h 40m. British Airways provides one of the quickest options available for as low as £815. 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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