Why this matters
The maximum drone altitude in Europe is not one fixed number. Pilots should understand the 120-metre rule, how height is measured above ground, and the local zones that can lower or remove that ceiling.
The 120-metre limit is a starting point, not the whole answer
The most repeated number in drone rules is 120 metres. It is a useful reference because, in the open category, it marks the standard upper ceiling above the surface. The problem starts when a pilot treats that number as the only rule and stops checking everything else.
In practice 120 metres is a maximum, not a guarantee. The specific geographical zone, an airport environment, a protected area, or a local restriction can require a lower ceiling, a flight notification, or no flight at all. So before treating altitude as settled, check the limit that applies at the exact location.
Height is measured above the ground, not from the takeoff point
A common misunderstanding is to count altitude from the takeoff spot. In the open category the ceiling usually refers to the height above the nearest point of the surface, not above the place the drone lifted off from. On flat ground the difference is small, but over a cliff, in the mountains, or above a valley it can be huge.
This has real operational meaning. A flight along a rising slope can keep a constant height relative to takeoff while sailing far above the allowed ceiling over the ground below. That is why altitude planning should follow the shape of the terrain, not only the number on the app.
- check which ceiling applies in the local geographical zone
- remember that height is measured above the ground, not from takeoff
- account for hills, cliffs, and valleys when planning the flight
A local zone can lower the ceiling or remove it
The standard 120 metres only applies where no stricter limit is layered on top. Near airports, in some urban zones, or over protected areas the allowed height can be much lower, and sometimes the flight needs a separate authorization.
The practical workflow is the same as for other decisions: start with the country guide, check the official zone map for the exact place, confirm the local height limit, and repeat the check right before takeoff. If the ceiling or zone condition is unclear, lowering the altitude or choosing another location is the safer call.