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Cheap flights from Belfast Intl Airport to Ontario from £607

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 29/6. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — ONT
15 Jun — 22 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Belfast Intl to Ontario

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One-way flights from Belfast Intl to Ontario
Search for one-way flight options from Belfast Intl to Ontario. Find affordable one-way fares based on user searches. Data last updated 16 May 2026.

Mon 29/606:30
BFS
-
ONT
3 stops42h 49m
Multiple Airlines
Deal found 15/5£607

Cheapflights Fare Finder

 
Customise your flight search to find flights from Belfast Intl 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 16 May 2026.
Use the filters below to find and compare flights from Belfast Intl Airport to Ontario that are best for you.

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BelfastOntario

BFS - ONT

BFSONT

Belfast Intl

Mon 29/6

06:30-17:19

3 stops42h 49m

£607

Flights are sorted by cheapest return flights first.

Deals found on 15/5

Sorted by cheapest first

Best time to book a flight from Belfast Intl to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Belfast Intl 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.

Related info for your journey

Find useful and relevant information for your journey from Belfast Intl 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 Belfast Intl?

    Most people fly into Ontario (ONT) if they book a flight to Ontario from Belfast Intl. On average, Ontario has 0 inbound flights from Belfast Intl per day from 0 airlines. Ontario is conveniently located just 3.1 mi from Ontario’s city center.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Belfast Intl 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.

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Ontario from Belfast Intl.

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

Certainly. Search results for flights to Ontario from Belfast Intl shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Yes, Cheapflights offers price alerts on Belfast Intl to Ontario flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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