Drone disruptions over Aalborg Airport (Denmark)

On the night of 24-25 September 2025, drones were observed in the airspace over Aalborg Airport in northern Denmark, a joint civil-military facility that also serves as a Danish armed forces air base. Multiple drones were reported, flying with their navigation lights on. North Jutland Police said the last confirmed observation of an active drone occurred at 00:54 on 25 September, and that it had not been possible to bring the drones down as they had flown over a very large area for a couple of hours. Several inbound flights were diverted, and the airport reopened at around 03:00. Police said there was no danger to the public and launched an intensive investigation, collecting physical and electronic evidence.

Aalborg Airport was disrupted again the following night, 25-26 September, with a further brief closure before midnight after a possible drone sighting. The events were part of a wave of drone incursions across Denmark: Copenhagen Airport had been shut days earlier, and on the night of 24-25 September police also received drone reports at Billund Airport and near Esbjerg and Sønderborg airports and at Skrydstrup Air Base, home to Danish F-16 and F-35 jets. No operators were apprehended.

The Aalborg disruptions fit a coordinated pattern of drone activity over Danish airports and military sites in late September 2025. Danish Defence Minister Troels Lund Poulsen described the events as a "systematic operation" by a "professional actor," and Prime Minister Mette Frederiksen called the broader wave the most serious attack on Danish critical infrastructure to date. Officials did not formally attribute the incidents; Frederiksen said she could not rule out Russia, while Russia denied involvement. Attribution remains unconfirmed and under investigation. The targeting of a dual-use civil-military airport, with drones flown visibly and difficult to counter, is consistent with hybrid-style intimidation and probing of critical-infrastructure resilience.