The flight of Sancho Panza (3)
I believe the answer is:
hop
'the flight' is the definition.
(thesaurus)
'of sancho panza' is the wordplay.
'of' says the answer is hidden in the clue.
'HOP' is hidden within 'sancho panza'.
(Other definitions for hop that I've seen before include "Jump on one foot" , "Beer flavouring; jump" , "It's used in brewing" , "Jump lightly" , "Spring" .)