Montreal International Airport-Dorval (YUL) has to be one of the greatest. The airport is like Midway or Love Field, but way bigger. They got 747s, A340s, A330, 777s and 767s landing every few minutes. The airport is smack in the middle of the city. Everyone is close to the airport. Looking out your bedroom window makes a good spotting place. But right before the longest runways, there are parking lots for commercial companies where many people come and spot. Planes come in 40-50 feet above you!!!
It is definitly the best place to spot in Canada, if not, the besy in North America