Most of the year it's been full flights every trip. LAX to YVR, YYZ, YUL. I flew LAX-YYZ-YUL. My schedule changed and so I was going to LAX to get the earliest flight out, but there were sold out all day. My booked flight was the last one out and it was full and I was in the Executive cabin - of course this was for the Thanksgiving Holiday. Interestingly enough, when I flew YYZ-YUL, I was booked on a later flight but I asked the gate agent if I could catch an earlier flight and he looked it up and said there were at least 50empty seats, so he gave me a flight change gratis. Also on this flight the Executive cabin was empty. Now this was Sunday A.M. from YYZ, but it was curious.