IF I "had "to Connect via toronto or Montreal,I'd pick Toronto.Again,that's "had" and mainly because most,if not all, of the flights to Montreal from Ottawa are on those tiny dehavilland.Once,years ago,in Montreal ,I jokingly pointed the plane out to my wife,saying it was ours for our flight to Ottawa.Turns out ,the joke was on me.I avoid that if possible,as it felt that the plane would never be able to get off the ground,or explode trying to.