Sell biofuel to companies in bulk to lower their CO2 emissions and fast track the green transition. This would simply corporate action and speed up climate transition.

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

Make visible in the app how many people are flying on green fuel on booked flights, to encourage other people to do.

Travel light = bring less than 8 kg. If you do so, you should be rewarded with points. If not, SAS will use the extra money you have to pay for sustainability investments.

Long time ago SAS had a shared limousine service in Sweden. For a resonable price, a stretched Volvo picked you up, and a few more passengers.

International ban on private jets. Everyone can fly commercial. With option like business and first class this should be achievable if all nations want to reduce emission