Pandaria Flight paths not discovered .

[Hazelnutey]

Hello there, I have couple of characters which I'm leveling up and on all of them the flights are discovered, but on my human paladin they are not, I mean they are discovered only from Stormwind to Booty Bay, the ones on the north and central are not discovered. I would gladly discover them but its time wasting. The hero is lvl 40.