Find flights
When to book
FAQs

Cheap flights from Ontario to Belfast from £296

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 26/1. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BHD
31 Jan — 7 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Ontario to Belfast

Enter your travel dates to find the best prices.

Best flights from Ontario to Belfast
Discover carefully curated flight deals from Ontario to Belfast that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 1 January 2026.

Sun 1/314:39ONT - BHD
2 stops20h 01mBritish Airways
Sun 8/310:40BHD - ONT
2 stops18h 27mBritish Airways
Deal found 31/12£519
Thu 12/313:20ONT - BHD
2 stops20h 20mKLM
Thu 19/306:30BHD - ONT
2 stops17h 43mKLM
Deal found 31/12£695
Sat 31/116:45ONT - BHD
2 stops18h 55mBritish Airways
Sat 7/218:00BHD - ONT
2 stops36h 13mBritish Airways
Deal found 1/1£612
Wed 4/314:39ONT - BHD
2 stops17h 56mBritish Airways
Sun 8/310:40BHD - ONT
2 stops20h 19mBritish Airways
Deal found 30/12£624
Wed 25/206:00ONT - BHD
2 stops26h 35mBritish Airways
Sun 1/310:40BHD - ONT
2 stops19h 49mBritish Airways
Deal found 30/12£624
Sat 11/416:52ONT - BHD
2 stops18h 23mBritish Airways
Fri 17/416:50BHD - ONT
2 stops33h 47mBritish Airways
Deal found 30/12£632
Fri 27/307:00ONT - BHD
2 stops24h 15mBritish Airways
Fri 10/406:35BHD - ONT
2 stops24h 00mBritish Airways
Deal found 1/1£642
Fri 27/317:02ONT - BHD
2 stops17h 13mBritish Airways
Sat 4/409:35BHD - ONT
2 stops20h 55mBritish Airways
Deal found 31/12£767

Find flight deals from Ontario to Belfast

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Belfast (BF1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 1 January 2026.

Round-trip from

£519

One-way from

£296

Popular in

June

Cheapest in

October

Average price

£510
British Airways
  • British Airways
  • 1/3-8/3
  • 4 total stops
  • 38h 28m total
  • Ontario to Belfast
Search Deals
British Airways
  • British Airways
  • 26/1
  • 2 total stops
  • 15h 20m total
  • Ontario to Belfast
Search Deals
Highest demand for flights based on searches. 17% potential increase in price (£102 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 January 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Ontario to Belfast 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 1 January 2026.
Use the filters below to find and compare flights from Ontario to Belfast that are best for you.

Fly from

Ontario

Fly to

Belfast

Route

Depart

Return

Price

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Sun 1/3

14:39-18:40

2 stops20h 01m

Belfast City

Sun 8/3

10:40-22:07

2 stops18h 27m

£519

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Sat 31/1

16:45-19:40

2 stops18h 55m

Belfast City

Sat 7/2

18:00-22:13

2 stops36h 13m

£612

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Wed 4/3

14:39-16:35

2 stops17h 56m

Belfast City

Sun 8/3

10:40-23:59

2 stops20h 19m

£624

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Wed 25/2

06:00-16:35

2 stops26h 35m

Belfast City

Sun 1/3

10:40-22:29

2 stops19h 49m

£624

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Sat 11/4

16:52-19:15

2 stops18h 23m

Belfast City

Fri 17/4

16:50-18:37

2 stops33h 47m

£632

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Fri 27/3

07:00-14:15

2 stops24h 15m

Belfast City

Fri 10/4

06:35-22:35

2 stops24h 00m

£642

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Thu 12/3

13:20-16:40

2 stops20h 20m

Belfast City

Thu 19/3

06:30-17:13

2 stops17h 43m

£695

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Fri 27/3

17:02-17:15

2 stops17h 13m

Belfast City

Sat 4/4

09:35-22:30

2 stops20h 55m

£767

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Mon 26/1

16:45-16:05

2 stops15h 20m

£296

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Sat 14/2

22:20-16:50

2 stops34h 30m

£318

Flights are sorted by cheapest return flights first.

Deals found on 31/12

Showing 1-10 of 17 results
1
2

Best time to book a flight from Ontario to Belfast

Have a flexible travel schedule? Discover the best time to fly to Belfast 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 Belfast

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

Currently, March is the cheapest month in which you can book a flight from Ontario to Belfast (average of £435). Flying from Ontario to Belfast in June is currently the most expensive (average of £688). 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 Belfast. 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 Belfast?

    Ontario (ONT) is the airport you will fly out of if you book a flight from Ontario to Belfast. You should not have trouble finding flights to Belfast from Ontario; the airport handles an average of 0 outbound flights to Belfast per day. You should also have plenty of airline options to choose from since 0 airlines have flights from the Ontario airport to Belfast. It is only a 3.1 mi journey to Ontario (ONT) from Ontario’s city center.

  • How long is the flight from Ontario to Belfast?

    Departing from Ontario to Belfast will take you 20h 01m. The distance between Ontario and Belfast is about 5095 mi.

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

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

  • How can I find direct flights from Ontario to Belfast?

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

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

    Yes. Cheapflights offers flight deals from Ontario to Belfast 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 Belfast?

    Currently, March is the cheapest month in which you can book a flight from Ontario to Belfast (average of £435). Flying from Ontario to Belfast in June is currently the most expensive (average of £688). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ontario to Belfast

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Belfast Intl flights
Los Angeles to Belfast City flights
San Francisco to Belfast Intl flights
San Francisco to Belfast City 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 Ontario to Belfast?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Belfast from Ontario today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Ontario to Belfast?

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 Belfast.

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

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

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

Of course! You can now track prices for flights from Ontario to Belfast and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.