Flight Pierre Elliott Trudeau International Airport departs from Montreal Pierre Elliott Trudeau International Airport at 19:50 and arrives at Chicago O'Hare International Airport at 21:15.
The flighttime is about 2h 25m. The distance travelled ("as the bird flies"): 1575 Km. So the average speed is roughly 652 Km.
There is an 1 hour time difference between Montreal and Chicago