Long Island Railroad offers train service from New York City to Greenport, New York, Long Island; the train station is directly across the street from the North Ferry Terminal. The Long Island Railroad can be easily accessed from JFK airport via the AirTrain which connects every terminal with the Jamaica station. You will need use a taxi service from LaGuardia Airport to access Jamaica station. Once at Jamaica you can board a Long Island Railroad train to Greenport, Long Island and connect to the North Ferry.