Get some oxygen, perhaps, on hearing price of flight (6)
I believe the answer is:
aerate
'on hearing price of flight' is the definition.
I can't tell whether this definition defines the answer.
'get some oxygen perhaps' is the wordplay.
'get' becomes 'aer' (I can't justify this - if you can you should give a lot more credence to this answer).
'some' says to take the centre.
'oxygen perhaps' becomes 'inanimate object' (oxygen is a kind of inanimate object).
The centre of 'inanimateobject' is 'ate'.
'aer'+'ate'='AERATE'
Can you help me to learn more?
(Other definitions for aerate that I've seen before include "Fill with oxygen" , "Add carbon dioxide to liquid - make bubbly" , "Charge with carbon dioxide" , "Add fizz" , "Fill with carbon dioxide" .)