Not forgetting that Eastern already flies from Rodez-Marcillac, Paris Orly up to 3 times per day (PSO route?)
The airport's had a number of Ryanair routes in recent years, so can certainly cope with a Saab 2000...
Bergerac's "tin shed" terminal manages to cope with Ryanair size loads year round and Béziers (Flybe served from Southampton a few years back for one season?) manages to cope with two Ryanair flights at the same time on some days.
Aveyron is not well served from the UK, a very understated region of France to visit, but well worth it.
MH