Possibility to add transportation ticket to airport when buying a ticket from the Scandinavia's big cities. For example airport express train or flybus.

Giving an incentive and getting more passengers to travel light should reduce aircraft loading and fuel consumption. Alternatively allow more cargo.

SAS should incentivize off-peak flights. Lower ticket prices on empty aircraft will reduce peak demand and the emissions caused by congestion and delays.

Ensure correct recycling of plastics by unwrapping meals and plastic protected crisp breads before handing to the customer.

Go for a fast integration of programs, joint schedules to increase cabin factors in the SkyTeam system - so passengers stays in SkyTeam which will also benefit SAS.

When the crew collects trash before landing, why not make separate rounds for collecting, cans, plastic cups, paper, etc instead of collecting all trash in the same bin.