Accompany the Horde air fleet to Twilight Highlands. Catch your zeppelin from the tower at the Southern Rocketway Terminus in Azshara.
Accompany the Air Fleet
Okay, you're all checked in. Wait here for Captain Krazz to bring the zeppelin around, then get on board and accompany the air fleet. Admiral Stonefist will be waiting for you outside of Dragonmaw Port!