Copenhagen Airport (CPH) has reopened after a significant closure caused by multiple large drone sightings, which began around 8:26 PM local time (6:26 PM UTC) on September 22nd, 2025. The airport's airspace closure, initially expected to last until 11:00 PM UTC, was extended with a NOTAM indicating operations would remain suspended until an estimated 5:00 AM UTC on September 23rd, 2025. During the closure, at least 35 flights were diverted to alternative airports including Malmö, Gothenburg, Billund, and Aarhus. Meanwhile, in Oslo, Norway, two foreign nationals were arrested on Monday night for illegally operating a drone in a restricted military area near Akershus Fortress, with police stating the drone was flying in a no-fly zone and recording sensitive sites. The drone activity over Copenhagen Airport involved "2-4 large drones," according to initial police reports, prompting a massive police and helicopter operation. Anette Østenfeldt from the Copenhagen Police stated that the drones were not hobby drones. A smaller SAS passenger prop plane made an emergency landing at Copenhagen Airport due to low fuel, met by fire engines on the tarmac. As of 7:39 PM UTC, over 15 flights had been diverted, with others holding their position or rerouted. In parallel developments, Sweden's Defense Minister stated that Sweden is prepared to use force to defend its airspace against violations. Reports also emerged of possible drone activity over Stockholm's Arlanda Airport, though this remains unconfirmed. The incidents in Denmark and Norway have prompted calls for military airports to be better prepared for similar threats. The disruptions at Copenhagen Airport began around 8:26 PM local time, with police suspending all take-offs and landings. One flight, #U24652 from Copenhagen to Paris, was reportedly headed back to Copenhagen due to the ongoing investigation. The previous report indicated that over 15 flights were diverted between 5:40 PM and 7:39 PM UTC on September 22nd, 2025, with details on the drone's origin or nature not yet officially released.
