If you fly too low, or enter a combat zone during combat, you will get a warning, and after a few seconds you will be forcefully dismounted with a parachute-like buff to prevent dying from falling. The parachute lasts until you hit the ground.
- Can't fly too low
- In Dalaran you can fly through the city, so long as you remain at least 20 yards above the ground. You cannot mount on any flying mount or shift into Flight Form while on the ground (except in Krasus' Landing).
- Can't fly during certain times
- In Wintergrasp you can fly through the whole zone, land, and takeoff from the ground so long as a battle is not taking place. During combat you will be forcefully dismounted after a few seconds (though you will also get a prompt asking if you would like to join in the battle, as well, making the debuff a moot point unless a player chooses no in the prompt).
Kalimdor, Eastern Kingdoms, and Northrend (before you get Cold Weather Flying) act similarly to no-fly zones in that you cannot mount on any flying mount or shift into Flight Form, but you will not be forcibly dismounted, since there is no way to enter these areas while flying.This section concerns content exclusive to Cataclysm.
With World of Warcraft: Cataclysm, flying mounts will be available to use in Kalimdor and Eastern Kingdoms.
Patch 3.2.0 (04-Aug-2009): The no flying zone rules are slightly changed.
Pre-patch one could not fly in the no-fly zones or mount up on a flying mount in one.