Keep a updated and modern fleet of aircrafts.

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

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

Use larger packages for the most consumed drinks, instead of handing out endless amounts of cans (less garbage, less weight on board) .

Let the captain thank the x number of passenger on board that added bio-fuel on the ticket.

Collect food waste separately, return as food for the animal farms supplying the meals, creating a true circular supply chain.