Flight board listings, for short (4)
I believe the answer is:
etas
'flight board listings for short' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for etas that I've seen before include "Characters in Greece" , "who once did menial tasks in Japan?" , "Makarios' letters" , "Greek characters" , "Characters from overseas" .)