so I found this when I was just flying into dalaran. ATM im uploading a vid how how to do it soon but heres a proof. Basicly you fly from Krasus landing to the main way of dalaran.
EDIT** Seems to not work on my pala, I tried without any buffs on my priest and when I used shadowform it worked again.
VIDEO
[YT]http://www.youtube.com/watch?v=V0TkJO8fk8Y[/YT]