I'm looking to see Paris, Normandy beaches, Brussels area, Amsterdam area during 15 days not including 2 days of to/from air from NYC area. Looks like air to /from Paris is the most efficient time and least cost. I would rather leave for for home from Amsterdam or Brussels but don't see anything reasonably priced for direct flights.
Also, Normandy area to Belgium would entail either car rental, which I'm ok with, dropping in Lille?, but seemed quite expensive on Rio2Rome. Does it make sense to go bk to Paris for train to Brussels/Amsterdam? My 15 days will be broken up roughly Paris 4 nights, Normandy 2 nights, Belgium 3 nights, Amsterdam 5 nights. Obviously, this configuration will depend on transport strategy and other inputs. Time frame is mid-Sept to beginning of Oct. It looks like for now (?) that travel to and within France, Belgium, and the Netherlands is ok for Americans. TY