If you want a cheap flight from Manchester to Toronto, you've got two airlines to choose from.
Toronto City Centre Airport is just one of the airports in Toronto. If you're not set on a specific airport, try changing your search from Toronto City Centre Airport to Toronto to see a broader range of flights – they might be cheaper. It usually takes about 13 hrs 25 mins to fly 5505 km to Toronto City Centre Airport.
There are about ten flights to or via Toronto every week, so you have plenty of options.
You can expect accommodation prices to be higher at this time of year too. Last-minute deals do crop up, but it's best to book everything in advance to avoid disappointment.