Pause to travel in formation (8)
I believe the answer is:
interval
'pause' is the definition.
(thesaurus)
'travel in formation' is the wordplay.
'formation' is an anagram indicator.
'travel'+'in'='travelin'
'travelin' is an anagram of 'INTERVAL'.
'to' is the link.
(Other definitions for interval that I've seen before include "Intermission, during a play say" , "Travel in (anag.)" , "Hiatus" , "Pause in middle of performance" , "Space of time" .)