Complete directions with flag (6)
I believe the answer is:
entire
'complete' is the definition.
('entire' can be a synonym of 'complete')
'directions with flag' is the wordplay.
'directions' becomes 'en' (I've seen this in other clues).
'with' is a charade indicator (letters next to each other).
'flag' becomes 'tire' (I've seen this before).
'en'+'tire'='ENTIRE'
(Other definitions for entire that I've seen before include "Envelope" , "Complete, intact" , "Utter" , "Whole and complete" , "Whole - undamaged" .)