Book cheap flights from Belfast to Ontario (USA) with Netflights. If you can’t find what you’re looking for, simply adjust the filters to widen your search.
But when you fly is just as important as who you fly with. If you're flexible on dates, try searching by month to see when the cheapest flights are.
Last-minute deals can be cheaper, but it's risky. It's best to book flights to Ontario (USA) in advance to avoid disappointment.
Once you’ve chosen your flight, why not check out our deals on accommodation and car hire? You’ll find lots of hotels in the USA, including some close to the airport – perfect if you're arriving late or leaving early.