LaGuardia (LGA), Kennedy (JFK), and Newark-Liberty (EWR) airports serve the New York metropolitan area. The Port Authority of New York and New Jersey has detailed pages on its website which explain ground transport options between the airports and Manhattan.
JFK AirTrain and Subway: At JFK, the new AirTrain monorail circulates around the various terminals and then leads off to the Howard Beach stop of the subway A train, to the Sutphin Blvd. stop of the subway E train, and to the Long-Island Rail Road's Jamaica station. The AirTrain costs $5, and then you have to pay the subway ($2) or train fare (up to $10) to get to Manhattan. Depending on whether you connect with the A or the E, the AirTrain plus subway combo takes 50-80 minutes to get from the airport to Midtown Manhattan. The A is more convenient in traveling straight to GISS from the airport, as it will take you to Columbus Circle, but is much slower than the E.
LaGuardia MTA Bus: The only mass transit option to LaGuardia is the M60 route (Manhattan route #60) on the MTA bus system. It travels back and forth between the airport terminals and the GISS-Morningside Heights neighborhood, including stops on Broadway at 116th St. and at 110th St. It makes stops in Astoria, Queens, and in Harlem along the way and takes 45 to 80 minutes, depending on traffic conditions. (The bus is popular with LGA employees so it can be very crowded.) Cost is $2 and must be paid using a Metrocard or in exact change.
Newark-Liberty AirTrain: Newark also has an AirTrain service which circulates around the terminals and connects with the Newark Liberty International Airport Train Station. From the airport train station, you can take an New Jersey Transit or Amtrak train into Penn Station in Midtown Manhattan. The AirTrain is free. NJT fare from the airport station into Manhattan is $15, which is much less than Amtrak charges.
Airport Buses: Options include the Airport Service Express buses, which connect JFK and LaGuardia to three locations in Manhattan: Grand Central Station (125 Park Ave. at 42nd St.), Penn Station (Seventh Ave. at 34th St.), and the Port Authority Bus Terminal (Eighth Ave. at 42nd St.). Similarly, the Olympia Airport Express connects Newark-Liberty Airport to those three Manhattan locations. One-way bus fare for LaGuardia is about $12, JFK $15, and Newark $11.
Gray Line also operates minibuses which circulate between some Midtown hotels and the airports, costing about $17. If you are staying at a Midtown hotel, inquire at the concierge desk about the bus.
Taxi: Cabs operate to and froms between Manhattan and JFK or LaGuardia. However, NYC taxis may only deliver you to Newark. When cabbing in from one of the airports, be sure to get a cab from the taxi stand outside the baggage claim area so that you will be charged the city-specified rate. Avoid the gypsy cab drivers who might be hanging about the baggage claim areas as they may attempt to charge you a fare 25%-100% more than a regular cabbie. Cab fare from the airport should be around $25 from LaGuardia, $45 from JFK, and $40 from Newark. Add to this about $5 for bridge/tunnel tolls plus a tip (at least 10%). Although this is expensive, it can be convenient if you have several people travelling together.
New York City is located on Amtrak's Northeast Corridor. Trains stop at Pennsylvania Station in Midtown at Seventh Ave. and 32nd St. Travellers to New York from Boston, Philadelphia or Washington, D.C., may find that the Amtrak is more convenient and less expensive than air travel.
Commuter rail service is provided by the Metro-North Railroad, the Long Island Rail Road, and New Jersey Transit. Metro-North connects the city to communities further up the Hudson River and in Connecticut, and terminates at Grand Central Station, at Park Ave. and 42nd St. in midtown Manhattan. Serving towns out on Long Island, the LIRR stops at Penn Station. NJT connects to various town in New Jersey and also operates out of Penn Station/