If you want to know where a Boeing 787 is at any moment, Boeing’s 787 Dreamliner Flight Tracker follows every 787 that is in the skies at any point of time. The tool uses Flight Aware to display information on a Google Earth background.
If you have not used Google earth before, you will have to download some software, the first time. It is a fascinating distraction. Now I want one for Airbus 380s and 747s!