First up, they call it Gold Preferred now. Second, the Dream Map feature on Travelocity is a good way to get this kind of info. The best I'm finding is $191 all taxes included to Nashville, no hotel room required (all your flights are on Christmas Eve, and you connect either both ways in Pittsburgh, or one in Pittsburgh and one in Charlotte). If you want to take a night in your destination city, then go for the $181 fare connecting through Pittsburgh to Toronto, and be sure you subscribe to the Websaver mailout from Air Canada--it lists lots of nice hotel specials along with fares. (As does the US Airways E-Saver mailout--you are getting that, aren't you? Watch for a (C) marker from Detroit, and you have an ultracheap fare that gives four segments!)