Yusuf Qardawi issued a
fatwawa: if you are fasting on a plane, you don't break your fast according to the time of destination or the origin. You fast purely on weather you can see the sun from the plane. If you do, you can't eat. I pondered the matter myself. And since I will hereby be issuing fatawawas, I have ruled the following: if you are in doubt whether you should break your fast or not, consume large amounts of banana cream pies, just in case. You may call this the Banana Cream Pie Fatwawawa.