Such a flight would be the first for Virgin (6)
I believe the answer is:
maiden
'virgin' is the definition.
(I know that virgin can be written as maiden)
'such a flight would be the first' is the wordplay.
I cannot quite understand how this works, but
'a' is found in the answer.
'would' could be 'd' (I've seen this in other clues) and 'd' is found within the answer.
'first' could be 'i' (I in Roman numerals eg Elizabeth I) and 'i' is located in the answer.
The remaining letters 'men' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
'for' acts as a link.
Can you help me to learn more?
(Other definitions for maiden that I've seen before include "See 3" , "No runs are scored from this - young girl" , "I named (anag) - young woman" , "Damsel" , "Six dot balls" .)