You can get the FlightRadar24 data as a JSON object for playing with at http://db8.flightradar24.com/zones/full_all.js
I altered my Earth program from a previous post to periodically poll this URL to plot the progress of my Girlfriend's Emirates flight from Dubai to Prague, and created a nice little gif of this. Sadly her flight wasn't on the feed at all except for this very short period between the Black Sea and Austria so the GIF is rather shirt and boring!
