Oslo Airport reopened after unidentified drone observations closed all air traffic from Monday night until Tuesday morning, causing hundreds of passengers to be diverted. Authorities reopened the airspace at Oslo Airport after the drone activity, which had caused significant disruptions. Several hundred passengers were affected, with one passenger, Øzkan Uymaz, describing the situation as being "stuck." This incident follows similar disruptions at Copenhagen Airport on September 23rd, 2025, where unidentified drone activity between 6:05 AM and 7:05 AM UTC led to 51 flights being diverted and 109 cancelled. Danish police are investigating the Copenhagen incident, suspecting a "capable actor" launched the drones from a ship at sea. Danish Minister of Defence Troels Lund Poulsen characterized the Copenhagen activity as "deeply serious and worrying," while Danish Prime Minister Mette Frederiksen called it a "violent attack" in the context of broader European tensions. Denmark and Norway are cooperating to determine if the incidents in Oslo and Copenhagen are connected. Danish police stated this morning that preliminary findings in Copenhagen suggest the drones may have originated from a vessel at sea. Malmö residents also reported drone alarms on the nights of September 22nd and 23rd, though police could not confirm sightings. Denmark has activated its national crisis coordination team to level 1 for enhanced monitoring and preparedness.
