Flight Pierre Elliott Trudeau International Airport departs from Montreal Pierre Elliott Trudeau International Airport at 10:30 and arrives at Chicago O'Hare International Airport at 12:00.
The flighttime is about 2h 30m. The distance travelled ("as the bird flies"): 1575 Km. So the average speed is roughly 630 Km.
There is an 1 hour time difference between Montreal and Chicago