Originally Posted by
eastexpress
I've got a few flights between YYT and YHZ, and both have all the seats blocked, like there are a lot. Any insight as to why Air Canada would do this?

Could be seats that are sold but the passengers have yet to select their seat (on basic or standard fare). I think they block the seats a couple days out before the flight.
Sometimes they are showing as blocked but your can still select them on AC's website.