Air final part of Love Island (4)
I believe the answer is:
skye
'island' is the definition.
(I've seen this before)
'air final part of love' is the wordplay.
'air' becomes 'sky'.
'final part of' says to take the final letters.
The final letter of 'love' is 'e'.
'sky'+'e'='SKYE'
(Other definitions for skye that I've seen before include "part of Scotland" , "Scotland island" , "Hebridean island close to mainland" , "Portree island" , "Island - keys (anag)" .)