Kind of cross when some members cancel tickets (6)
I believe the answer is:
celtic
'kind of cross' is the definition.
'some members cancel tickets' is the wordplay.
'some' indicates a hidden word (some of the parts of the word are used).
'CELTIC' is hidden in the letters of 'members cancel tickets'.
'when' is the link.
(Other definitions for celtic that I've seen before include "Roy Keane's team on the fringe" , "The Sea between southern Ireland and Cornwall" , "The Irish are part of the race" , "Relating to Irish, Gaelic, Manx, Welsh, etc" , "Of a group of languages such as Gaelic and Welsh" .)