However , Air France-KLM currently lead the pack in terms of their environmental efforts ( the company has topped the Dow Jones Sustainability Index four years running ) . KLM , Finnair and worn gear have teamed with designers to craft bags from worn gear and uniforms . Delta says it has recycled 340 tons of textiles . Delta and Air France 's old carpets turned into secondary fuel for the cement industry . KLM donates old materials to local workshops .
KLM , Finnair and worn gear have teamed with designers to craft bags from worn gear and uniforms . Delta says it has recycled 340 tons of textiles . Delta and Air France 's old carpets turned into secondary fuel for the cement industry . KLM donates old materials to local workshops .