Organised tour flight (4)
I believe the answer is:
rout
'flight' is the definition.
(I have seen 'Headlong flight ' mean 'rout' so perhaps 'flight' could also mean 'rout')
'organised tour' is the wordplay.
'organised' is an anagram indicator.
'tour' is an anagram of 'ROUT'.
(Other definitions for rout that I've seen before include "Devastating defeat" , "Crushing defeat" , "Drubbing" , "Decisive defeat" , "Headlong flight" .)