Flight Heathrow Airport departs from London Heathrow Airport at 12:00 and arrives at Toronto Lester B. Pearson International Airport at 15:00.
The flighttime is about 8h 00m. The distance travelled ("as the bird flies"): 8814 Km. So the average speed is roughly 1102 Km.
There is an 5 hour time difference between London and Toronto