Establish additional partnerships with other airlines on specific routes to, for example, consolidate two half-full flights into one fully-booked flight.

Window shades down when parked at warm days. Keep the fuselage cooler. Experienced it domestic USA and it works

Introduce flying quotas, personal and for companies

Discount on available seats if booked 5 hours before departure to fill up empty seats

Put some pressure on Swedavia to create more EV charging in the parking and use "Green Electricity" This is more of the total experience of travelling.

Stand up seats for shorter flights.