Newark Liberty International Airport (IATA: EWR, ICAO: KEWR, FAA LID: EWR), first named Newark Airport and later Newark International Airport, is an international airport within the city limits of both Newark and Elizabeth, New Jersey, United States. It is about 15 miles south west of New York City.
The airport is operated by the Port Authority of New York and New Jersey, which also manages the two other major airports in the New York/New Jersey metropolitan area, John F. Kennedy International Airport (JFK) and LaGuardia Airport (LGA), in addition to two smaller airports, Teterboro Airport and the Downtown Manhattan Heliport. Newark is the fifth busiest international air gateway to the United States; JFK ranks first. 
Newark Liberty is the second-largest hub for Continental Airlines, which is the airport’s largest tenant (operating all of Terminal C and part of Terminal A). United Airlines, FedEx, and UPS operate cargo hubs.
In 2005 Newark Airport handled approximately 33 million passengers; JFK handled about 41 million and LaGuardia about 26 million, making for a total of approximately 100 million travelers using New York’s airports. With these numbers, New York’s airspace surpassed that of Chicago’s to become the busiest in the US.