BTW, if you can't see a flight in the Air North booking interface, it usually means that it is sold out. You can call in and ask to be waitlisted. I have tried twice on the YYJ-YXY route, and both times I got a seat. Once within 8 minutes of being waitlisted, the other time the next morning. Yes, that also works with Air North's very attractive air passes (Aurora for the Winter, Solstice for Summer, and Student for, well traveling students all year long).