Air France F-GSPA
Air France and KLM Royal Dutch Airlines have been a single company for a number of years, hence the Air France KLM lettering just below the flight deck windows.
While Toronto is generally a bigger air travel market than Montreal (within Canada) for most airlines, not so for Air France. Air France has 3 daily Paris-Montreal-Paris flights, but just one daily Paris-Toronto-Paris flight.
This is flight AF356 Paris Charles de Gaulle to Toronto Lester B. Pearson.