Plane passenger hopes for this hill! (7)
I believe the answer is:
upgrade
'this hill' is the definition.
(thesaurus)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for upgrade that I've seen before include "promotion" , "Get better travel conditions" , "Improvement" , "Raise to higher standard" , "'Improve, travel status perhaps (7)'" .)