This is simply a tip I only myself just found out about. I hope others will find it as useful as I have.
If you have a level 80 character, you can purchase the Tome of Cold Weather Flight, and send it to your level 68+ alt. Alternatively, should you happen to be in Dalaran or get a port there, you can buy it yourself. This item is account bound, but should help you make leveling (especially on pvp servers), easier... and possibly surprise those who don't have it.