A lot of ground equipment is still driven by internal combustion engines, and can be upgraded to run on electric instead for better efficiency.

Stop handing out plastic cups for canned drinks such as sodas, beer, and water. Unless the passenger asks for it. Reduces the number of unused cups that are thrown away.

In small airports, like Vigra, where there only 1 or 2 airplanes stand, have roofs like carports to prevent snow on plane. This will reduce amount of deicing fluid needed.

Stop serving food/snacks/drinks on the shortest flights and instead implement grab and go lounges. Saves weight and can give customers greater choice.

Keep your good clients - minimum 10 years as gold member gives you gold for life. Not necessarily 10 years in a row. Now 18 years with 1 missing in the middle = no go

For every mile the aircraft flies overseas, SAS commits to a certain amount of plastic being removed from that ocean.