By charging more for luggage, travelers might reconsider how much they bring. And this will also enable reduced weight of the aircraft.

Have a separate bin to put old baggage tags and recycle them. Not together with ordinary waste.

Allow users to visualise their travel carbon footprint in-app. Include everything such as transportation to/from the home and destination, hotels.

Fill up empty seats by selling affordable return trips to unknown/secret destinations. Pick the destinations among those that have low occupancy close to departure time.

Include 1 free unit of biofuel per booked flight, for passengers that have reached Conscious Traveller status.

Serve only ecological wine/champagne including long-haul business class no exceptions, brand SAS as world's first 100% ecological wine airline.