In the summer, Air Canada runs flights to Montreal using its Rouge sub-brand, which is a euphemism for “cram as many vacationers onto the plane as possible.”
For the tall, like me, this means knees abut the seat in front.
For the run from Montreal to Boston I lucked into an exit row seat. It’s missing a right arm rest, but I have about a metre of leg room.
Rouge is a French word which means 'no room for your knees.'