Flight Aware claims to be able to give you live updates on any commercial or private flight.  

Live Flight Tracking

Flight Aware provides real-time tracking, but not just of flights or traffic to airports — actual unique, tail-number identifiable equipment. So, you can see where the plane you’ll be flying has been. It’s always sort of floored me the way airlines shuttle planes through their service loops. Los Angeles to Tokyo, clean the toilets and shove some more food on board, and fly it back. Don’t airplanes need to rest for a few days? Something?

via dl tv and techkwondo