Flyer reaches starting point by way of hill (7)
I believe the answer is:
aviator
'flyer' is the definition.
(I know that flyer can be written as aviator)
'starting point by way of hill' is the wordplay.
'starting point' becomes 'A' (as in the phrase 'get from A to B').
'by way of' becomes 'via' (I've seen this in another clue).
'hill' becomes 'tor' (tor is a kind of hill).
'a'+'via'+'tor'='AVIATOR'
'reaches' acts as a link.
(Other definitions for aviator that I've seen before include "He travels up" , "Flyer, pilot" , "Woman in a flying machine" , "Ace, say," , "Flyer in early days of planes" .)