Flights at Luxembourg's Findel Airport resumed early Sept. 19 after being temporarily suspended the previous day due to suspected drone activity. An incoming flight from London was diverted to Liege, Belgium, as authorities investigated the unauthorized unmanned aircraft systems detected around the airport. The incident occurs amid heightened concerns over hybrid warfare threats from Russia.
The temporary closure of Luxembourg's airport highlights the increasing risk of hybrid warfare tactics impacting civilian infrastructure, raising concerns for air travel safety and underscoring geopolitical tensions between Russia and European nations supporting Ukraine.
Flights at Luxembourg's Findel Airport were temporarily suspended on Sept. 18 after suspected drone activity was detected in the vicinity. The airport stated that flight operations were halted as a precautionary safety measure after unauthorized unmanned aircraft systems (UAS) were observed around and over the airport.
An inbound flight from London was rerouted to Liege, Belgium, with the pilot informing passengers that drones were still flying over Luxembourg's airport, according to a passenger who spoke to the Luxembourg Times. Flight services were reinstated in the early hours of Sept. 19. Authorities are still investigating the source of the drones.
The incident occurs amid growing concerns about hybrid warfare threats from Russia, with several European leaders issuing warnings. Polish Prime Minister Donald Tusk stated on Sept. 17 that intelligence assessments suggest Russia might conduct drone attacks against countries supporting Ukraine in the coming months, a sentiment echoed by French, Lithuanian, and Finnish officials.
Earlier on Sept. 1, the German government directly accused a Russian intelligence service of attempting a drone attack at Leipzig/Halle Airport in early August. This incident involved explosive-laden drones found at the airport, seemingly targeting a Ukrainian cargo plane carrying military equipment. Since Russia's full-scale invasion of Ukraine in 2022, Luxembourg has provided 340 million euros ($390 million) in aid to Ukraine, despite its small population of 689,345 in 2026. Luxembourg City also serves as one of the EU's official capitals and hosts the Union's Court of Justice and Investment Bank.