Air France-KLM (Air France-KLM Group) is one of the largest airline groups in Europe, formed in 2004 by the merger of Air France and KLM, headquartered in Roissy, France. It is headquartered in Roissy, France. Air France-KLM uses Paris-Charles de Gaulle Airport and Amsterdam-Schiphol Airport as hubs. The Air France-KLM group is ranked 340th in the 2013 World Top 500.