Why not floo instead of thestral to London?

[cubfanbudwoman]

No: HPFGUIDX 91783

> 
> My point was that he was in a flat panic, ready to do anything to 
> save Sirius and had been flapping hysterically about how to get to 
> London for the past couple of hours. What could be more obvious 
> than at least trying to step through the fire to the kitchen of 
> Grimmauld place. Even if he didn't bother to yell up the stairs 
> for Sirius when he got there, but rushed straight off to the tube 
> station, from his POV it would surely have seemed the fastest way 
> to get to the MoM ? 
> 
> Carolyn, still irritated.


Do you think DD and possibly the other teachers might have stressed 
over & over to the students that one can't "floo" out of Hogwarts?  
Maybe it's like the people who splinch when apparating or something, 
and DD told horror stories about anyone who attempted to floo out?  
Even if Harry were desperate, he might remember that you can't do it 
[except perhaps out of DD's fireplace].  NO EVIDENCE, of course; 
just an idea.

Siriusly Snapey Susan