Frequent flier? (4)
I think it could be either:
(Other definitions for kite that I've seen before include "Flying toy or kind of hawk" , "Bird (that can be flown!)" , "It flies with string attached" , "It's flown in the wind at the end of a string" , "Toy; aircraft (dated)" .)
'frequent flier' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for bird that I've seen before include "Flier - spell in prison" , "Egg-laying vertebrate" , "Feathered creature" , "Prison time (slang)" , "Fowl" .)