Travelling from most locations, it is best to book your flight to Toronto during the month of November for the best deal, although there are other times of the year which offer great deals as well.
From most locations, booking your flights to Toronto around 60 days prior to your departure date finds the best deals.
In general, booking your departure to Toronto for a Tuesday represents the best deal on airfare. Try to avoid a Saturday departure to stay away from the highest prices.
On average you can find the best deals on plane tickets to Toronto when looking for flights with evening departure times.