I currently have a planned trip from the US via YYZ to HKG (it is an award trip and thus we are limited in routing optinos). We are scheduled to land in YYZ at 5:40 p.m. on 12/31 and have the flight out at 1:30 a.m. on 1/1.

Of course, I am concerned about potential weather issues. While I know that nobody can predict whether a storm might occur, I'd like to gather as much information as I can before deciding how far to go to arrange an alternate route (including additional money and losing a few days on vacation).

Is YYZ well equipped to handle at least light-moderate snowfall? Are very early morning/late night flights more likely to be delayed/cancelled because of fewer people available to clear snow, or less likely because of fewer competing flights? Given that it's a transcontinental flight with a large plane, does that make it any more/less likely to be delayed/cancelled?

Again I am not looking to exclude the possibility of a bad snowstorm preventing even flying to YYZ, or some kind of 2012 cataclysmic event... But if this was ORD I would reroute without even thinking about it. Ideally we fly in on a nice clear day, go through customs, have dinner in the city, and return later for our flight. But I have never been to YYZ or even eastern Canada so I have no idea what usually happens and how it's handled.

Thanks in advance!