Originally Posted by
rehoult
Easiest way is to route via YYC and YEG. YVR-YEG-YYC-YYZ. Call it in to AC, it's a valid routing. Sadly, what you would think of as the easier options (via YOW or YUL) aren't legal routings.
So SFO-YVR-YUL-YOW-YYZ is legal, but YVR-YUL-YYZ isn't? Oh AC...