Change plastic luggage-trays at fast-track for sustainable (but durable) trays of reused plastic or other cyclic material

Create an ability to share a seat in your car with other passengers on the flight. It's better than everyone riding their car.

SAS connects Scandinavia with Europe, through hubs and trains. Fly to a hub, get a train to your destination.

Add green flights on some departures. nothing is served on these flights, only hand luggage is allowed, but you earn more Eurobonus points if you choose such a departure.

Introduce a "minimal comfort" seating class with basic amenities and reduced seat recline, allowing more passengers per flight and lowering per-person emissions.

In a week/ some days before a flight, do sell “stand by tickets”, to a cost of approx. Euro 50 in Europa, Euro 200 intercontinental, , to increase the cabin factor.