The first flight out of Brussels the day after a European agreement with the airline industry to ease airspace restrictions was bound for Kinshasa.
Our correspondent observed a few take-offs and landing, mostly to and from southern Europe, Turkey and Africa.
A Brussels Airport spokesman talked about busying up the runways, perhaps to half their usual capacity on Wednesday. He said: “Activity is still relatively low compared to normal. Companies needed to be able to re-organise, and any slots they asked for were granted. Over the coming days, bit by bit, we’re going to get things back to normal, if there are no surprises.”