Like part of Greece that’s reached by final flight (5)

I believe the answer is:
attic
'like part' is the definition.
'attic' can be an answer for 'part' (attic is a kind of part). I am unsure of the 'like' bit.
'greece that's reached by final flight' is the wordplay.
I cannot quite see how this works, but
'by' could be 'at' and 'at' is located in the answer.
The remaining letters 'tic' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
'of' is the link.
Can you help me to learn more?
(Other definitions for attic that I've seen before include "Tacit (anag.)" , "High level of" , "Room inside a building's roof space" , "Greek - garret" , "of Greek region" .)
