Drone alarm about Danish airport: chaos and security warnings!

Drone alarm about Danish airport: chaos and security warnings!

On September 25, 2025, the Copenhagen airport again became the scene of a drone alarm. Martin Svendsen, the airport's sales and marketing director, confirmed these events to the Ritzau news agency. The police had seen several drones in the air around 9:44 p.m., but the exact number and size of these drones remains unclear. Jesper Bøjgaard, the police operations manager, explained that the drones are brought from heaven as soon as this is reasonable. There is currently no danger to air passengers or residents, but the situation caused significant impairments in flight operations.

Several flights were redirected as a result of the alarm. "FLIGHtradar24" reported that three incoming machines were redirected to other airports. In addition, an incoming and two outgoing flights had to be painted. This incident follows a worrying chain of drone sightings that had already been reported in Denmark and Norway. The Danish and Norwegian authorities examine a possible connection between these sightings.

Consequences and reactions

Prime Minister Mette Frederiksen, who described the incident as the "heaviest attack on Danish critical infrastructure so far", also suspected that Russia could possibly be behind these drone activities. Copenhagen Airport was closed on Monday evening for around four hours, which led to about 100 painted flights and the dismay of tens of thousands of passengers. The Stuttgart airport was also affected by similar sightings and had to be reopened after about three and a half hours.

Special attention is paid to the senior investigator Jens Jespersen, who speaks of a "capable actor", whereby the drones seem to be controlled by an experienced pilot. During the incident, however, there was no concrete dangerous situation for people, which had a certain relief in public. You cannot look at the developments in isolation, as they are in the context of the latest occurrences in Europe, such as drone overflows about Poland and injuries to the Estonian airspace or cyber attacks at European airports.

Technological challenges in dealing with drones

Developments in air traffic also raise questions with regard to the handling of unmanned flight systems (UAS). Attacks on critical infrastructures, as are also observed in the United States, are increasing. The use of these technologies can bypass security measures and carry out unauthorized surveillance. The little UAS for leisure use will grow to around 1.82 million units by 2027. This is a significant challenge for security not only in the USA, but also in Europe.

In order to react effectively to threats from UAS, measures such as the approval of anti-drone technologies must be expanded. Reports and recommendations for the congress, including the renewal of legal powers to combat such threats, are necessary. These aspects are crucial in order to be able to guarantee the security of critical infrastructures, such as airports.

Overall, the events at Copenhagen Airport illustrate the urgency of developing effective strategies for controlling and combating drone sightings and establishing an expanded framework to ensure critical infrastructures.

For more information on the incidents, read the reports from the Small newspaper,, Daily show and SENTRY CS.