Chicago alternative to O'Hare (6)
I believe the answer is:
midway
'chicago alternative to o'hare' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for midway that I've seen before include "1942 naval battle in the Pacific - towards the centre" , "Equally distant from the extremes" , "At the fifty per cent point" , "Half the distance" , "With as far to go as already travelled" .)