If you prefer to take a train, Philadelphia is on Amtrak's Northeast Corridor route which runs between Richmond, Virginia, and Boston, Massachusetts, via Washington DC and New York City. There are also trains west to Lancaster, Harrisburg, Pittsburgh and Chicago and south to Florida. NJ Transit has a frequent rail service between Philadelphia and Atlantic City.
Several highways lead through and around Philadelphia, making it easy to come and go by car.
Ferries operate on the Delaware River between Penn's Landing in Philadelphia and Camden, New Jersey. Shuttle buses, limousines and taxis also operate between the airport and the city. Most downtown distances are short enough to walk. A trolley bus is a good way to visit many of the sights. Three subway lines travel under the city.