That is the problem with all of this; all the airlines need to sound good but they are not very willing to help. Like why don't they add in the CO2 in the price and make less margin if they want to be so environmentally conscious? They don't want to do that because less profit. KLM did well last year and they are quite expensive anyway on most flights (they are never in the top 5 when I need to fly, inside EU or long haul where I need to go) so they could do that. But they want us to pack lighter, sit in shittier chairs and pay into their CO2 program, while they do not lower prices.

If the goal is about reducing the gaz consumption it's still one good advice. But indeed, I'm not sure they will lower their plane ticket :)