Maybe fly across Portugal to find vet (7)
I believe the answer is:
inspect
'vet' is the definition.
(I've seen this before)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for inspect that I've seen before include "Scrutinize, audit" , "Examine or survey" , "test" , "Check" , "Examine officially" .)