Planes flying to city (6)
I believe the answer is:
naples
'to city' is the definition.
(Naples is an example)
'planes flying' is the wordplay.
'flying' is an anagram indicator (letters fly around into new positions).
'planes' is an anagram of 'NAPLES'.
(Other definitions for naples that I've seen before include "Planes go awry in Italian port" , "Mediterranean city" , "Major Italian city south of Rome" , "European city" , "Planes (anag) - somewhere in Italy" .)