I just played around with travelocity.ca and found out that AC have a fare of $289.00 CDN from YYZ-LAS, SFO, SAN, LAX or SEA but the condition is that you must leave on Nov 20 or Nov 21 and return on Nov 24 or Nov 25. It was not announced and most likely is a sale to match other US carriers. This is way better than the seat sale that's currently on and best of all this fare required NO Sat night stay!