Peace blessed2006!
All hadiths indicates that in case u r on any mount i.e. travelling in plane, train bus etc then u can pray in any direction. I think today, we have lot of technologies from which we can benefit like getting correct direction of Qibla as well timing of Azan. These software are available for cell phone too which indicates correct direction of Qibla + Azan timings.
Moreover these software are free of cost if we would like to install. Even though if we buy it by paying an amount, its not more then worthy to those things which we buy for the purpose of living in this world.