Airports in Paris and Amsterdam were the worst affected, with the Dutch authorities saying more than 1,000 travellers had been forced to spend the night at Schiphol, one of Europe's busiest hubs. Six people have died in weather-related accidents as the continent reels from the most bitter cold snap of the winter so far. Five of those deaths were confirmed in France on Tuesday, while a woman died in Bosnia as heavy snow and rain sparked floods and power outages across the Balkans.
Arrivals and departures were halted for several hours on Tuesday evening at Belgium's busiest airport, Brussels, leading to the cancellation of dozens of flights. The skies were also closed over Liege airport, an important hub for freight transport, leading to further cancellations, delays and diversions. Meanwhile, the mayor of the Flemish town of Diest reported that police and army officers had spotted four drones at the nearby Schaffen military airbase on Tuesday.