Yes, read that this morning! Don’t you just love KLM!
I got 2 days heads up of potential delay last winter and their website allow me to rebook my flight to fully flexible economy without any charges. On top of that, a refund of the delayed flight in form of miles.
One thing that I love about KLM is that, as a company they are modest and they understand the Norm of Reciprocality. None of the other airlines got that.