Flight One in Constellation? (6)
I believe the answer is:
stairs
'flight one in constellation?' is the definition.
'stairs' can be an answer for 'flight' (I've seen this in another clue). I'm not certain of the 'one in constellation?' bit.
'flight one in constellation?' is the wordplay.
'flight' becomes 'stair' (I've seen this before).
'one in constellation?' becomes 's' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'stair'+'s'='STAIRS'
Can you help me to learn more?
(Other definitions for stairs that I've seen before include "Access consisting of steps" , "Interior means of ascent" , "Way between floors" , "A set of rising steps" , "4 and 8 (to the cockney)" .)