John F. Kennedy International Airport (IATA: JFK, ICAO: KJFK, FAA LID: JFK), often referred to as Kennedy Airport, or simply JFK, is the primary international airport serving New York City. It is the busiest international air passenger gateway into North America, the fifth busiest airport in the United States and the busiest airport in the New York City airport system, handling just under 59 million passengers in 2016. Over ninety airlines operate out of the airport, with non-stop or direct flights to destinations in all six inhabited continents.