Fanciful, first-class railway journey's closer after hearing ticket price (4-5)
I believe the answer is:
airy-fairy
'hearing ticket price' is the definition.
The definition suggests an adjective which matches the answer.
'fanciful first-class railway journey's closer' is the wordplay.
'fanciful' becomes 'airy' (I've seen this in another clue).
'first class railway' becomes 'fair' (I can't explain this - if you can you should believe this answer much more).
'closer' indicates one should take the final letters (the letter which 'closes' the word).
The final letter of 'journey' is 'y'.
'airy'+'fair'+'y'='AIRY-FAIRY'
'after' acts as a link.
Can you help me to learn more?
(Other definitions for airy-fairy that I've seen before include "Fanciful or impractical for breezy elf" , "Fanciful and impractical like breezy sprite" , "Unrealistic - fanciful" , "Fanciful, not based on reality" , "Lightweight" .)