The world's oldest operating airline KLM Royal Dutch Airlines has announced today the start of weekly flights from John F. Kennedy Airport in New York to Amsterdam Airport Schiphol using sustainable biofuel.

Flight KL642 is operated by a Boeing 777-200 every Thursday, the airline said in a statement.

This is the result of a joint effort and expanded cooperation between KLM, Schiphol Group, Delta Air Lines, the Port Authority of New York and New Jersey and by contributions of KLM's partners in the Corporate BioFuel Program.

KLM said it has been working with the World Wide Fund for Nature the Netherlands (WWF-NL) since 2007. The cooperation aims to stimulate a more sustainable airline industry by reducing carbon dioxide emissions, increasing fuel efficiency, and investing in innovations such as sustainable biofuel.

By this initiative KLM demonstrates that sustainable biofuel in the airline industry is here to stay, said the airline.

KLM's biofuel is supplied by SkyNRG, a company which KLM founded in 2009 together with ARGOS (North Sea Petroleum) and Spring Associates.

In June 2012, KLM's longest biofuel flight ever travelled from Amsterdam to Rio de Janeiro, proof of KLM's pioneering role in the development of sustainable biofuel.