You will find an extensive list of cheap international flights from New York to Lisbon on Travel Merry. When you are flying out from NYC to a new country or a continent outside America you are left with a choice of choosing one of the three international airports: John F Kennedy International Airport (IATA code JFK), LaGuardia Airport (IATA code LGA) and Newark Liberty International Airport (IATA code EWR) as your departing airport in NYC. JFK and LGA are located in Queens Borough of New York while EWR lies in Newark in the neighboring state of New Jersey. All the three airports are in close proximity to each other.