What sort of aircraft are you looking for? SEP, microlight, glider?
Airfields that are able to receive SEP aircraft, and thus have flying clubs with SEPs on the field, within one hour from Amsterdam are Den Helder (De Kooy), Amsterdam (Schiphol - yes there is a flying club there. Landing fees are eye watering though), Hilversum, Lelystad and Rotterdam (amongst others, the largest club of the Netherlands with ~800 members and some 15 aircraft available).
I did a quick search but could not find a comprehensive list of all clubs at all these airfields. You might be lucky through the websites of these airfields.