Clermont-Ferrand is a *'real* hub, i.e. flights are timed in a way to connect to each other. There are three daily "meeting times". The following destinations are served:
Most flights are operated by Air France's regional fleet (ER4, EM2, S20), but there are also some F100s and Airbusses.
It is quite an interesting hub, because transfer times are extremely short (I think 15 mins minimum).