LuBlu,,
as the answer b4,,,
u have 2 hopes on getting a free upgrade (unless flight is full in economy)...1 of the hopes is BOB the other is NO...
if u have the extra and r willing to pay for the upgrade then the airline will take it,,,
but depending on were u r flying to will depend on how much it is to upgrade ur ticket,
ie. u r traveling london/kuala lumpur/australia, on Malaysia Airlines, the upgrade would only be from london to kuala lumpar and would cost in the region of �820 each up to �1020 this also includes the extra �20 u have to pay as airport tax that the govenment forces on all the airlines to pay.....