Copenhagen Airport (Kastrup) and later Danish airport/military-site reports, Denmark
The Copenhagen Airport Drone Incursions (September 2025)
On 22 September 2025 Copenhagen Airport halted traffic for nearly four hours after multiple large flying objects were reported near the airfield. Police initially described two or three drones and treated the event as a serious security incident. After a nine-month investigation, however, Danish pol
Why This Case Matters
A major critical-infrastructure disruption whose evidential lesson is corrective: official operational response was real, but the Copenhagen objects themselves were never conclusively established as drones.
Chronology
- 22 Sep 2025 ~20:26 CEST airport operations halted
- police report several large flying objects/drones near airport
- roughly 50 flights diverted and airport reopens after nearly four hours
- further Danish airport and military-site reports follow that week
- Jun 2026 police close Copenhagen investigation with no suspect and no conclusive proof the airport objects were drones
The Witnesses
Evidence
The following evidence types are documented for this case:
Conventional explanations: Misidentified aircraft, stars/planets, hobby/commercial drones, deliberate state or non-state drone incursion, and false/contaminated reports remain possible. The police investigation did not select a cause.
What Remains Unresolved
- What exactly was seen over Kastrup
- whether multiple reports referred to the same objects
- operator/origin
- relationship, if any, to later confirmed/suspected military-site drone activity.
Key Takeaways
- Do not write 'drones shut Copenhagen Airport' as a proven identification. The shutdown and investigation are certain
- the object class remained unconfirmed when police closed the case.
Sources
Primary and secondary sources for this case file: