Capendu is a larger village with 6,800 inhabitants and lots of shops and restaurants. It's 14 km from Carcassonne, which has a small airport (cheap flights with Ryanair), 37 km from Narbonne and a one hour drive from Toulouse (airport).
Not to be missed: Le lac de Alaric.
You can walk round this beautiful lake and view all the special plants and sit down at one of the numerous picnic tables. The lake is well-known for its 'Carpes of capendu'.
If you're very courageous you can take the 'Pas de la Mort' (walk of death) to the top of the hill and there you have a magnificent view over the Aude valley.