Arrive at airport terminal in old plane (5)
I believe the answer is:
comet
'old plane' is the definition.
'comet' can be an answer for 'plane' (I've seen this before). I'm not sure about the 'old' bit.
'arrive at airport terminal' is the wordplay.
'arrive' becomes 'come' (synonyms).
'at' is a charade indicator (letters next to each other).
'terminal' says to take the final letters (terminal refers to the end).
The last letter of 'airport' is 't'.
'come'+'t'='COMET'
'in' is the link.
Can you help me to learn more?
(Other definitions for comet that I've seen before include "One is named after Edmond Halley" , "Heavenly visitor" , "Tailed space traveller" , "Small extraterrestrial body" , "It orbits the sun, with bright centre and long tail" .)