Fond of an outing from time to time (2,3,3)
I believe the answer is:
on and off
'from time to time' is the definition.
(I've seen this before)
'fond of an outing' is the wordplay.
'outing' is an anagram indicator (an outing implies travelling).
'fond'+'of'+'an'='fondofan'
'fondofan' with letters rearranged gives 'ON-AND-OFF'.
(Other definitions for on and off that I've seen before include "Perhaps switch positions" , "Now and then, starting and stopping" , "Switch choices" , "the two sides at Old Trafford?" , "From time to time, not continuously" .)