As far as I know, transporting corpses on planes is possible, but it will probably cost a lot of money. It is the freight plane, it will charge by weight and size, both the coffin and his body will be very expensive. But more importantly, there needs to be an international airport there, a few extra transportation costs coming to and go from the airport. I don't know if he considered this option, would $ 20,000 be enough for it?