Folks who fly out to a friend in France (6)
I believe the answer is:
family
'folks' is the definition.
(thesaurus)
'fly out to a friend in france' is the wordplay.
'out' indicates putting letters inside.
'to a friend in france' becomes 'ami' ('friend' in French).
'fly' going around 'ami' is 'FAMILY'.
'who' acts as a link.
(Other definitions for family that I've seen before include "Means-tested benefit for working people with children, paid from 1971 to 1986" , "One's relations" , "Household" , "Nearest and dearest" , "Group of people related to one another" .)