A daughter in flight - what an adventure! (8)
I believe the answer is:
escapade
'what an adventure' is the definition.
('escapade' can be a synonym of 'adventure')
'a daughter in flight' is the wordplay.
'a daughter' becomes 'ad' (I've seen this in other clues).
'in' indicates putting letters inside.
'flight' becomes 'escape' ('escape' can be a synonym of 'flight'**).
'ad' put within 'escape' is 'ESCAPADE'.
(Other definitions for escapade that I've seen before include "Daring adventure" , "daring exploit" , "Mischievous romp" , "Wild adventure" , "Adventure, lark" .)