Consternation about flyer (4)
I believe the answer is:
tern
'flyer' is the definition.
'consternation about' is the wordplay.
'about' says the answer is hidden in the clue (the clue goes around or about the answer).
'TERN' can be found hidden inside 'consternation'.
(Other definitions for tern that I've seen before include "Fork-tailed relative of the gull" , "Seabird related to the gull" , "Seabird, sounds like become sour" , "Rent out the bird" , "Three-masted schooner" .)