Flight
Recommended option: This airport will offer more flight options than New York Stewart, but is a little further (1h away). If flying into Westchester County Airport you could then rent a car or order an Uber to complete the trip to Poughkeepsie.
Flight
This would be the closest airport to the venue (38m) but is a very small airport so has limited direct flights and flight options (you would most likely have to do a connecting flight).
Flight
If you desire to fly into a major NYC airport (Newark, La Guardia or JFK), you would then need to rent a car to complete the trip to Poughkeepsie. You could also make your way into Manhattan to take the Amtrak from Penn Station for a 1h20m train ride.
Train
If you aren't a huge fan of flying and want to do some sight seeing on your trip, there is an Amtrak station in Poughkeepsie. So you can hop on at your nearest Amtrak station, sit back, relax and then arrive in Poughkeepsie.
Travel Note
Mostly directed towards our NC guests: if you wish to drive to the festivities, the commute time from Jacksonville NC to Poughkeepsie NY is 9h52m.