I'm getting more into the idea of a visit every piece of research I uncover.
I (re)discovered an old Rough Guide to the Pyrenees I forgot that I had
which gives details, but they must be out of date.
It looks like the easiest way to fly would be to Biarritz/Bayonne and drive
from there. And combine some coastal activities with some in the mountains.
Which might go down well 'at home'.
Have fun in the Picos. We were there a few years ago for a few days and
really enjoyed the area.
Stewart