New York and Philadelphia are 81 miles apart in a straight line. The drive between the two cities covers about 97 miles in the most direct route.
The most direct driving routes from New York to Philadelphia traverse either Interstate 95 or the New Jersey Turnpike. Driving by car offers a good value for those traveling in groups, but traffic can be an issue, according to About.com. Parking in Philadelphia is also a downfall for car travel.
Buses also are available between the two cities. Greyhound, Bolt Bus and Mega Bus all offer frequent trips between the cities. As of 2014, bus fares for these trips are between $10 and $17.