Well, it turned out not to be the fun drones boys play with. These were the big ones. With wings. Most likely operated by a capable state.
There are reports that something similar were seen in Malmø, Sweden around the same time.

I live 4 km from the airport in Copenhagen. It's not the first time it happens. It can easily be drones that can be ordered online. Or bought in a shop. Just for fun. Hopefully they'll find out

what's the point?