Sudden feeling got from flying miles up (7)
I believe the answer is:
impulse
'sudden feeling' is the definition.
(impulse can mean a sudden urge)
'flying miles up' is the wordplay.
'flying' is an anagram indicator (letters fly around into new positions).
'miles'+'up'='milesup'
'milesup' anagrammed gives 'IMPULSE'.
'got from' is the link.
(Other definitions for impulse that I've seen before include "Whim; thrust" , "Miles up (anag)" , "Impetus - whim" , "Drive" , "Impel us with sudden urge" .)