Among travels notice region centred on Delos (8)
I believe the answer is:
cyclades
'region centred on delos' is the definition.
I can't tell whether this definition defines the answer.
'among travels notice' is the wordplay.
'among' indicates putting letters inside (I've seen this in other clues).
'travels' becomes 'cycles' (I am not sure about this - if you are sure you should believe this answer much more).
'notice' becomes 'ad'.
'cycles' placed around 'ad' is 'CYCLADES'.
Can you help me to learn more?
(Other definitions for cyclades that I've seen before include "Aegean island group" , "Greek islands in the southern Aegean" , "many islands" , "Island group inc. Naxos" .)