Flight International Airport departs from Denver International Airport at 13:28 and arrives at Toronto Lester B. Pearson International Airport at 12:33.The flight has a short stop at Chicago.
The flighttime is about 21h 05m. The distance travelled ("as the bird flies"): 2783 Km. So the average speed is roughly 132 Km.
There is an 2 hour time difference between Denver and Toronto