Airspace over several Belgian airports was temporarily closed on November 4, 2025, after multiple drone sightings disrupted flights and stranded passengers.

Belgium’s security services investigate the latest incidents to highlight the vulnerability of European airspace

European Commission President Ursula von der Leyen has called the incursions "hybrid warfare", and while she has not said Russia was responsible for all the incidents, she said it was clear Russia's aim was to "sow division" in Europe.

Unidentified drones were spotted over a Belgium military base housing U.S. nuclear weapons, sparking security concerns and an investigation into a potential spying operation.

Belgium closed its airspace after drone sightings on Tuesday evening, sparking travel chaos at major airports, including the capital Brussels. Drone sightings were also reported over military bases in Belgium, according to local media.

Both NATO and the European Union have been on high alert following a string of airspace violations, thought to be from Russia, in recent weeks.View on euronews

Several drones spotted above a Belgian airbase over the weekend were there “to spy” on military fighter jets, the country’s defense minister said Sunday, at a time when European nations are on high alert for airspace intrusions.

EADaily, November 4th, 2025. The new American fighter-bombers that Belgium began to receive do not fit into its airspace. This is reported by the French edition of 20minutes.