There is a school right at Dorval however it is on the General Aviation side of the airport and I'm not sure if publuc transport goes that way. The school was Hemispher, if they still exists, and is comprised of mainly Parisian French instructors that can barely say "Hello" in English, however, there use to be a perfectly bilingual instructor who spoke excellent english but I don't know if he's still there.
Cedars does still exist but, like what was posted earlier, it's off the beaten path so you'd be looking for a ride.
Although I know very little about St. Hubert, it has one or two schools and all the facilities for flight training. That might be your best bet.
Good Luck.
P.S. Has the snow started to fall yet??
