Flight Lester B. Pearson International Airport departs from Toronto Lester B. Pearson International Airport at 15:20 and arrives at Houston George Bush Intercontinental Airport at 18:16.
The flighttime is about 3h 56m. The distance travelled ("as the bird flies"): 1736 Km. So the average speed is roughly 441 Km.
There is an 1 hour time difference between Toronto and Houston