Make a “code-share” cooperation with train providers, to allow for booking a ticket from A to B with combined train-plane modality and same benefits as connecting flight

Nuclear fuel last for much longer than fossil, and a plane can fly as long as it,s food for, so around the world in one flight.

It's also good for noise pollution

Develop incentive programs for staff to contribute ideas on reducing emissions. Make staff applicable for perks by doing "missions".

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

Option to remove included luggage when booking. This will help SAS to predict load and be more efficient.

Do not carry ice cubes - drinks are already cold.