From Newark Liberty International Airport (EWR):

Take AirTrain to Newark Liberty International Airport Train Station. At Airport Train Station, take a NJ Transit train on the North Jersey Coast Line or Northeast Corridor Line to Newark Penn Station or the North Jersey Coast Line to Hoboken. (link to http://www.njtransit.com/sf_tr_schedules.shtml)

At Newark Penn Station, transfer to PATH train going to WTC. At Hoboken, you may use either the PATH train or the Hudson-Bergen Light Rail train to Exchange Place.

If using PATH to WTC: Get off at Exchange Place Station. (link to: http://www.panynj.gov/) Exit using the main escalator. After exiting, turn left, walk about 50 yards, you will see large statue on the street, go past the statue, turn right and walk away from the waterfront. One Exchange Place is the 2nd building on your left adjacent to the Light Rail tracks.

If using Hudson-Bergen Light Rail: Take either the 22nd St, the Bayonne Flyer or the Liberty State Park train and get off at Exchange Place. (link to: http://www.njtransit.com/sf_lr.shtml) One Exchange Place is the building adjacent to the train station.

From New York LaGuardia Airport (LGA):

Q33 and Q47 buses go to Roosevelt Avenue/74th Street where you can transfer to the New York Subway (http://www.mta.nyc.ny.us/nyct/maps/submap.htm). Take the E train (downtown) to World Trade Center in Manhattan.

From the WTC station, take the PATH train to Jersey City (http://www.panynj.gov/). Get off at the Exchange Place stop which is the first stop on PATH. Exit using the main escalator. After exiting, turn left, walk about 50 yards, you will see large statue on the street, go past the statue, turn right and walk away from the waterfront. One Exchange Place is the 2nd building on your left.

From New York John F. Kennedy International Airport (JFK):

Take AirTrain to Jamaica Station. At Jamaica Station, take the E subway to World Trade Center in Manhattan. From the WTC station, take the PATH train (http://www.panynj.gov/) to Jersey City.

Get off at the Exchange Place stop which is the first stop on PATH. Exit using the main escalator. After exiting, turn left, walk about 50 yards, you will see large statue on the street, go past the statue, turn right and walk away from the waterfront. One Exchange Place is the 2nd building on your left adjacent to the Light Rail tracks.