Drones disrupt flights at second Danish airport in a week

A screen capture of a post on X by FlightRadar24 on 24 September, 2025.
Reuters

Denmark's Aalborg airport was closed due to drones in its airspace, police said early on Thursday (25 September), two days after the country's main Copenhagen airport was shut over drone sightings that raised European security concerns.

Danish national police said the drones followed a similar pattern to the ones that had halted flights at Copenhagen airport for four hours a few days earlier.

Local police later said the drones had left the Aalborg area after about three hours.

Denmark said on Tuesday (23 September) the incident at Copenhagen airport was the most serious attack yet on its critical infrastructure and linked it to a series of suspected Russian drone incursions and other disruptions across Europe.

The closure of Aalborg airport also affected Denmark's armed forces because it is used as a military base, police added. The Danish armed forces said they were assisting local and national police with the investigation, but declined to comment further.

"It is too early to say what the goal of the drones is and who is the actor behind," a police official said.

European Commission President Ursula von der Leyen said on Tuesday that the drones that halted flights at Copenhagen airport were part of a "pattern of persistent contestation at our borders."

Suspicions of Russian involvement in the Copenhagen airport incident were ungrounded, Russia’s ambassador to Denmark said on Tuesday.

MORE THAN ONE DRONE

Northern Jutland police told reporters "more than one drone" had been sighted near Aalborg airport and they were flying with lights on.

Northern Jutland police later said that efforts to take down the drones had been unsuccessful and the drone operators had yet to be apprehended.

Southern Jutland police said in a post on X that drones had also been observed near the airports in the Danish towns of Esbjerg, Sonderborg and Skrydstrup.

There is no danger to passengers at Aalborg airport or residents in the area, police said. 

They added that three flights had been diverted to other airports.

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