Sadly, RyanAir does not fly into Amsterdam, but rather to Eindhoven, 90 minutes away. If you want to take advantage of their cheap flights to London, Barcelona, Madrid, Dublin, Milano, Pisa and Marseille, you have to take a roadtrip down to the south of the Netherlands first. This weekend I am going to Montpellier, via Marseille. And via Eindhoven. One can take the train to Eindhoven at a cost of 30 euros round trip, which probably amounts to almost the price of the flight. Then, however, you have to go to the airport by bus, as the train does not connect directly. An alternative, that I recently discovered and hope works out, is a bus service, connecting directly from Amsterdam Centraal (at the Canal Boat Holland International bus stop) to the Eindhoven airport. It costs 32 euros round trip, but is direct, saving you the hassle of an additional transfer. The schedule is available at the Eindhoven Airport website.