WotLK Death Knight as my Main

[sistendo]

Hello! I have a lock and a dk. If I delete my lock, will the dk become my main? It's because I want to fly to Northrend right away but my lock's level is too low but my dk is level 80. TIA

[Keymouse8800]

Hello! I have a lock and a dk. If I delete my lock, will the dk become my main? It's because I want to fly to Northrend right away but my lock's level is too low but my dk is level 80. TIA

What is your main is only defined by you. The game doesn't in anyway define your characters by alt or main. Its a player used term, nothing else.
So in other words if you delete your lock, yes the DK will become your main, as its your only available character, until you decide its not going to be your main.

Flying is not related to main or alt, You can learn that on every character you decide to level, once its available for learning.