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.

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

Reduce the amount of items on meal trays. Stock to the main and a piece of bread or a salad. No need for all these extra individually wrapped items, dessert etc.

Travelers register final destination, SAS sends taxi sharing offers via SAS transfer = lower taxi costs and individual receipts for passengers.

Members to chose their preferred seat in their profile and automatically be assigned this seat if available on their flight

Present sustainability data for the flight in the infotainment system, with for instance bio-fuel stats, # meals pre-selected and how much carbon emissions was saved.