Drone sightings halt flights at Munich airport, affecting thousands . Drone sightings forced authorities to suspend flight operations at Munich airport late on Thursday, causing major disruptions for nearly 3,000 passengers. . At least 17 flights were cancelled, and 15 arriving flights were diverted to Stuttgart, Nuremberg, Vienna, and Frankfurt. The disruptions came after several drone sightings over the airport prompted German air traffic control to restrict operations at 10:18 p.m. (2018 GMT)