We do not have enough data on this route to provide a reliable graph showing how many days before departure it is the best to book.
However, usually the closer it is to the departure, the more expensive the tickets are.
The most popular airlines on the route Philadelphia Intl Airport - New York John F. Kennedy: American Airlines (AA).
There is no direct flight on the route from Philadelphia Intl Airport to New York John F. Kennedy
Il volo con scalo più breve dura 16h 38min.
Philadelphia (PA) New York (NY)