Authorities in Denmark and Norway are investigating a series of unauthorized drone sightings that forced the temporary closure of airspace over two major international airports—Copenhagen’s Kastrup Airport and Oslo’s Gardermoen Airport, and are being treated as serious threats to national and regional security.
In Copenhagen, multiple drones were detected near the airport perimeter, leading to a near four-hour shutdown that disrupted over 50 flights and affected approximately 20,000 passengers. Danish police say the drones demonstrated flight behavior consistent with advanced operation, and officials have described the incursion as one of the most significant threats to Denmark’s critical infrastructure in recent memory.
Shortly after the Copenhagen incident, Oslo’s main airport reported similar drone activity, prompting Norwegian authorities to temporarily close airspace. Though the disruption lasted just under three hours, it led to delays and diversions and raised concerns about a coordinated effort.
While Danish and Norwegian officials are cooperating closely, no definitive link between the two incidents has been established. Authorities in both countries are analyzing radar data, visual reports, and drone signatures as part of a joint investigation. Danish leadership has confirmed the threat level to critical infrastructure remains elevated.
Security experts across Europe have expressed growing alarm over the vulnerability of critical national infrastructure and entities to drone-related threats. Discussions are now underway among Nordic and EU partners regarding the implementation of a regional drone defense strategy.