This was not made by me, credit to Devalina of Deathsoft.
WoWEmuHacker 4.3 - Beta 2
emuhack 4.3 devalina.zip
This is working on live servers.
Start WoW
Login normally
Minimize, open emuhacker
Check off Flymode classic to fly
Most of the other features on this work and don't get you banned but they just D/C you so they aren't useful for live server. Flymode classic wont d/c you.