Separate the salt and pepper from the rest of the table set. Way too often it's just thrown away.

Implement the potential to offset carbon footprint by CDR technologies like enhanced rock weathering;

Inflight sales of biofuel, the one buying most rewarded and recognized at the end of the flight, if flight is all biofueled all contributing share big pile of EB points

Sponsor projects that can help build renewable energy sources, like wind mills, solar panels. Additionaly work with selected airports on becoming carbon neutral

Using hydrogen tanks in the rear of the plane, for example. This could work on shorter routes such as domestic flights or intra-Europe.

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