I95 north to Rt. 440 exit. Take 440 across the outer bridge. After the bridge you will take an exit to stay on 440 which will be the Pearl Harbor Memorial Expy. Stay on 440 to I-278 east. This will take you the Verrazano-Narrows bridge. Cross the bridge and stay to the left towards the end of the bridge. You will exit onto the Belt Parkway east at the end of the bridge. Take the belt parkway all the way to the airport exit. Watch the signs in the airport for the appropiate terminal. Depending on the time, traffic can be a PITA. On the other hand, traffic can be a PITA at any time. Depending on time of day, it will take you between 2 and 4 hours to get there.
GOOD LUCK!