From most locations, the cheapest flights to Toronto can be found during the month of September; however great deals can be found at other times.
From most locations, booking your flights to Toronto around 47 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 Sunday 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 morning departure times.