Defcon Alerts Threat Monitor

Defcon Alerts Threat Monitor

Europe

Drone Sightings Disrupt Operations at Copenhagen Airport, Sightings Over Military Site In Oslo

On the same day as the Copenhagen closure, drone activity was reported over a military site in Oslo, Norway, resulting in the detention of two foreign nationals.

Defcon Level's avatar
Donald Standeford's avatar
Defcon Level
and
Donald Standeford
Sep 22, 2025
∙ Paid
1
2
Share

EUROPE — On September 22, multiple large drones prompted the suspension of all take-offs and landings at Copenhagen Airport. Police confirmed sightings of two to three drones in the area, leading to the diversion of approximately 35 flights to alternative locations such as Billund.

Copenhagen Airport. Credit: kallerna, CC BY-SA 4.0, via Wikimedia Commons

Share

Estonia Seeks NATO Article 4 Consultations Following Russian Airspace Violation, Marking Second Invocation This Month

Estonia Seeks NATO Article 4 Consultations Following Russian Airspace Violation, Marking Second Invocation This Month

Defcon Level and Donald Standeford
·
Sep 19
Read full story
Estonia Reports Violation of Airspace by Three Russian MiG-31 Jets

Estonia Reports Violation of Airspace by Three Russian MiG-31 Jets

Defcon Level and Donald Standeford
·
Sep 19
Read full story
NATO Eastern Sentry Advances with UK Typhoon Deployment and Multi-Nation Reinforcements

NATO Eastern Sentry Advances with UK Typhoon Deployment and Multi-Nation Reinforcements

Defcon Level and Donald Standeford
·
Sep 16
Read full story

More Alerts On Europe

Helicopters were deployed to monitor the situation, and a significant police presence was established on the ground. The drones were observed moving in and out of the airport vicinity, including over the Øresund Strait between Denmark and Sweden.

This incident aligns with documented drone sightings in Scandinavia during 2025. In January, up to 20 drones were reported over Køge Harbor, an area used for military shipments to Baltic countries.

Police were notified of the sightings, which involved silent operation and rapid disappearance over Køge Bay. The Danish Police Intelligence Service investigated those events amid concerns over potential hybrid threats.

Drone Activity In Oslo, Norway, Results In Detention Of Two Foreign Nationals

This post is for paid subscribers

Already a paid subscriber? Sign in
Donald Standeford's avatar
A guest post by
Donald Standeford
Founder of The Standeford Journal. I'm an American independent investigative journalist, intel/geopolitical analyst, and world traveler.
Subscribe to Donald
© 2025 Defcon Level
Privacy ∙ Terms ∙ Collection notice
Start writingGet the app
Substack is the home for great culture