Airfare
It looks as though airfare for Air Canada for that time period is a little higher than usual, probably to account for increased travel from the US. Then again, it's too early to say. The airfare may go down as the dates approach.
I wouldn't try US airlines as they are likely to be more expensive and blackout dates apply. Try to avoid any US connections. Fly directly to either YUL or YYZ then connect to YUL.
The biggest problem will be in finding a parking spot at your home airport. Get there early. The long lines for check-in and security will add to the "fun." Once you get past Canadian customs, you're home free.
If you can change your schedule, I would avoid the airports (especially in the US) the Wednesday before and the Sunday after.