From WoWWiki
- At Orgrimmar, the Zeppelin Tower is just east of the Orgrimmar gates. The one that leaves from the south edge of the tower will take you to the Undercity; the other goes to Grom'gol.
- At Undercity, the Zeppelin Tower is just north of the entrance to the city. The one that leaves from the west edge of the tower will take you to Orgrimmar; the other goes to Grom'gol.
- At Grom'gol Base Camp, the Zeppelin Tower is inside the outpost and doubles as the inn. When on top of the tower, the one that leaves over the water will take you to Orgrimmar, while the other one will take you to Undercity.
- There is also a boat connecting The Barrens in Kalimdor and Stranglethorn Vale in the east. The boat docks at Ratchet and Booty Bay, respectively.
- If you're not sure which Zeppelin on a platform is which, you can talk to the Zeppelin Master on the platform and they will mention which city they serve.
- Boats and Zeppelins remain docked for exactly 60 seconds before they move on. The exception is the Feathermoon Ferry, which docks for exactly 30 seconds.
- Each boat and Zeppelin keeps its own precise schedule, but each has a slightly different cycle in the 3 to 5 minute range. For example, Undercity-Orgrimmar runs every 3:59 while Undercity-Grom'gol runs every 5:15.
- Using the addon Nauticus can make timing your travels easier, since it shows arrival and departure times of any boat or Zeppelin that you (or anyone else on your realm running the addon) have used at least once before.
- Although it is hard, players of the opposite faction may board a horde zeppelin (WARNING!! since the game didn't intend this, you will most likely get killed)