Drone sightings at airports: how a closure unfolds, DFS figures and consequences

Friday evening, observation deck, the last wave of arrivals is on the live map – and suddenly all approaches break off. On the flight tracker, the first aircraft start circling, and a few minutes later the first ones turn toward an alternate airport. Often there is a single report behind it: drone near the airport. This article explains how a closure after a drone sighting unfolds, what the statistics of the Deutsche Flugsicherung (DFS, Germany’s air navigation service provider) show, what consequences such incidents have for airlines and travelers – and what you should do as a spotter in such a situation.

The short answer

As soon as a drone is reported in the approach or departure area, air traffic controllers stop clearances for the affected area – in the extreme case for the whole airport. Together with the airport and the police, the situation is assessed. According to the DFS, such a closure usually lasts at least 30 minutes. The number of these incidents has risen sharply in Germany recently: from 161 in 2024 to 225 in 2025.

Why even a small drone is enough

An airliner on final approach flies slowly, low and on a fixed path. Exactly there, a few hundred meters above the ground, dodging is hardly possible. A collision with a drone can damage engines, cockpit windshields or wing leading edges – and unlike a bird, a drone is made of metal, plastic and a battery.

That is why the rules are strict. As the overview Drones near airports explains in detail, operation within 1,000 meters of the airport boundary and in a corridor along the extended runway centerlines is practically ruled out for hobby pilots in Germany. On top come the control zones, where nothing may take off without clearance from air traffic control. Where exactly these areas lie is shown by the map explained in the article Geozones and the dipul map.

For the controllers in the tower, a drone report is still a dilemma: As a rule, they do not know how big the object is, who is flying it and where it is headed. The situation therefore has to be assessed carefully before they send aircraft back into the same airspace.

How a closure unfolds step by step

The exact procedures differ from airport to airport and are not publicly described in detail. The basic pattern can still be traced well from the DFS’s statements.

The difference between partial and full closures is important. At airports with several runways, the tower can under some circumstances shift traffic to an unaffected runway. That reduces capacity but keeps operations going. If the sighting is central or there are several reports, only a complete stop remains.

What the DFS statistics show

The DFS has recorded for years how often drones disrupt air traffic in Germany. What is counted is not all drone flights but cases in which a drone has disturbed air traffic. The figures are usually published as an annual summary or as an interim status on request.

Period	Disruptions caused by drones	Context
2017	88	a record at the time
2018 (through end of November)	152	increase of about three quarters over 2017
2024	161	baseline for the latest rise
2025 (through end of September)	172	already more than in the whole previous year
2025 (total)	225	new record
First half of 2026	145	around 90 percent in the vicinity of airports

Three things can be read from the table. First: Drones are not a new problem – as early as 2018, the number was in the triple digits. Second: After a calmer phase, the development has accelerated significantly since 2024. Third: The focus is clearly at airports. Of the 172 cases through September 2025, 123, or nearly three quarters, occurred in the vicinity of airports according to the DFS; in the first half of 2026, the share was around 90 percent.

Which airports are particularly affected

The distribution fluctuates considerably. In the first nine months of 2025, Frankfurt Airport led the list with 37 cases, ahead of Cologne/Bonn with 13 and Düsseldorf with 10. In the first half of 2026, the picture looked different: Berlin was in front with 28 cases, just ahead of Frankfurt with 27 and Bremen with 23. For Leipzig/Halle, the DFS cited 18 cases in the same period.

That Frankfurt regularly appears near the top is hardly surprising: The airport has a great deal of traffic, lies in the middle of a densely populated metropolitan area and has long approach and departure corridors over inhabited areas. The more people and the more flight movements, the greater the chance that a drone is in the wrong place at the wrong time – and that someone notices it.

Well-known cases: Gatwick and Munich

The case that every discussion is still measured against is London Gatwick in December 2018. After reported drones, the airport was repeatedly closed over several days, around 1,000 flights were canceled or diverted, and about 140,000 travelers were affected. No culprit was ever found, and it remains disputed to this day what the witnesses actually saw. The whole story is told in the article The Gatwick drone incident of 2018; the airport itself is introduced in the London Gatwick profile.

In Germany, Munich Airport made headlines in early October 2025. After drone sightings on two consecutive evenings, flight operations there were temporarily suspended each time. The incidents triggered a broad debate about how airports in Germany can be better protected against drones. Which technology comes into question for that and where the limits lie is described in the article Drone detection and countermeasures at airports.

Both cases show the same pattern: It is not the individual flight that is the problem but the uncertainty. As long as nobody can rule out that a drone is in the approach path, the runways stay closed.

The consequences: from holding patterns to damage in the millions

For those involved, a drone closure works on several levels.

• In the air: Arriving aircraft go into holding patterns. What that looks like on the live map is explained in Spotting holding patterns on the flight tracker; the background on the procedure is under Holding explained.
• Diversions: If the closure lasts longer, aircraft fly to alternate airports. What happens in the cockpit is described in Diversion to an alternate airport.
• On the ground: Departures back up, connections are missed, crews exceed their duty times. In the evening, night flight restrictions come on top, which often make a shift into the night impossible.
• Economically: A DLR analysis evaluated for 2025 that 116 of the 226 reported incidents led to full or partial closures at a total of 25 airports. It estimates the direct costs at around 60 million euros, with knock-on effects such as delays and cancellations of up to 160 million euros.
• Criminal law: Anyone who flies their drone at an airport in violation of the ban commits at least an administrative offense. If they endanger air traffic, criminal consequences are possible. The details on fines are in the rules article Drones near airports.

For travelers, the situation on compensation is not clear-cut. EU Regulation 261/2004 does not provide for a flat-rate compensation payment if the airline can invoke extraordinary circumstances it could not influence. Care services such as meals, rebooking or a hotel remain unaffected, however. You can find more in the article Passenger rights under EU Regulation 261/2004 and, for delay causes in general, under Why flights are delayed.

Who is responsible for what

Several bodies work together in drone incidents, and their roles are often confused.

Actor	Role in a drone sighting	What it does not do
DFS / tower	assesses the report, suspends clearances, redirects traffic	does not hunt drones and does not investigate culprits
Airport operator	coordinates ground operations, informs airlines and passengers	does not decide on clearances in the airspace
Police	search for drone and pilot, take reports, secure evidence	does not regulate air traffic
Airlines	re-plan rotations, decide on alternate airports and cancellations	have no influence on the duration of the closure

The DFS itself stresses that it supports the responsible security authorities in introducing powerful systems for drone detection and countermeasures and is working with airports and authorities on new procedures for unauthorized drone flights. How air traffic control as a whole is organized is explained in The DFS (German air navigation service).

What this means for you as a spotter

Spotters stand exactly where drone sightings are most likely: under the approach, at the fence, on hills overlooking the runway. That has three consequences.

You often notice closures first. If several approaches go into holding at the same time on the live map even though weather and wind are fine, a drone report is one possible explanation – but it is never certain. Thunderstorms, runway inspections or technical problems also produce similar pictures. So do not speculate publicly about causes before official information is available.

A closure can also bring spotter opportunities. When aircraft are diverted to alternate airports, types and airlines suddenly land there that you rarely see otherwise. How you recognize such diversions live is described in Spotting diversions and alternate landings. That is of course no license for frantic drives down the highway.

Your own drone stays at home. At the visitors’ hill or on the observation deck, you are practically always in the restricted zone. Anyone who flies a drone there risks not only a fine but in the worst case can trigger a closure themselves – and damage the reputation of all spotters. What is allowed at the fence is covered in Is plane spotting legal?.

The DFS explicitly asks that drone sightings near airports or in control zones be reported immediately to the police on 110 or to the airport’s security control center. At some airports, spotters even work specifically with the security authorities for this – more in the article Spotters as security partners.

How to recognize a possible closure

You usually only learn officially later whether an airport is closed because of a drone. A few signs are typical, though:

• Several holding patterns at the same time, even though weather and wind are unremarkable.
• Aircraft ready for departure stay at the holding point while the runway is quiet.
• Approaches break off on short final and re-enter the sequence.
• First diversions to nearby airports show up on the flight tracker.
• Police helicopters circle in the area; that, too, is often visible on flight tracker maps – how to find them is explained under Rescue and police helicopters on the flight tracker.

None of these signals proves a drone sighting. Together, though, they form a picture that helps you put the situation in context – and decide whether waiting at the spot is still worth it.

Conclusion

Drone sightings have become part of everyday life at German airports. In 2025, the DFS counted 225 disruptions, more than ever before, and the first half of 2026 continues the trend. The sequence is always similar: A pilot or controller reports the drone, the tower stops clearances, the police and airport are brought in, and operations resume after roughly half an hour at the earliest. The consequences reach far beyond those minutes – with diversions, cancellations and costs in the millions. For spotters, that means: Stay alert, report correctly and keep your own drone far away from the airport.