Air France–KLM S.A., also known as Air France–KLM Group, is a Franco-Dutch airline holding company incorporated under French law with its headquarters at Charles de Gaulle Airport in Tremblay-en-France, near Paris. The group has offices in Montreuil, Seine-Saint-Denis, Paris, and in Amstelveen, Netherlands. Air France–KLM is the result of the merger in 2004 between Air France and KLM. Both Air France and KLM are members of the SkyTeam airline alliance. The company's namesake airlines rely on two major hubs, Paris–Charles de Gaulle Airport and Amsterdam Airport Schiphol respectively. Air France–KLM Airlines transported 87.3 million passengers in 2014.