People often assume Flightradar24 is a true “radar” that can see everything in the sky. In reality, the platform is built around specific surveillance signals, especially ADS-B transmissions from aircraft transponders. So when someone spots a small unmanned aircraft—or hears about a “mystery drone” in the air—one of the first questions is whether Flightradar24 can track it. The answer is nuanced: in most cases, it cannot reliably track drones, but there are scenarios where drone-like targets or confusing contacts may show up.
This guide breaks down how Flightradar24 tracks aircraft, how drones communicate (when they do), and what “tracking” means depending on the device and the type of radio signals involved.
How Flightradar24 Tracks Aircraft (and Why That Matters)
Flightradar24 visualizes air traffic by collecting position and identification data broadcast from equipped aircraft and then turning those broadcasts into live tracks on a map. The core technology behind most visible targets on Flightradar24 is ADS-B (Automatic Dependent Surveillance–Broadcast).

ADS-B in simple terms: position reporting over radio
With ADS-B, an aircraft determines its position (commonly using GPS or similar navigation inputs) and broadcasts that position along with additional metadata over a radio link. Ground receiver networks and participating stations pick up these transmissions, and the platform aggregates them for users. When you watch the live aircraft track on Flightradar24, you are typically watching the results of ADS-B messages being received and decoded by the network.
That matters because Flightradar24 is not designed to detect every object in the sky based on size, motion, or radar reflections. Instead, it shows what it can decode from compatible signals.
Why Flightradar24 is not “radar” for everything aloft
A conventional radar system “paints” a return based on reflections of radio energy. Flightradar24 does not operate as a universal radar overlay. Its coverage is driven by whether an object is transmitting ADS-B-like data that the service’s infrastructure can receive and interpret.
In practice, this means that an aircraft can appear sharply on the map when it is equipped with a functioning ADS-B transponder, while an object without ADS-B will often remain invisible—even if it is physically present and moving at low altitude.
Can Flightradar24 Track Drones? The Core Limitation
Most consumer drones do not broadcast ADS-B position reports in a way that Flightradar24 can consistently receive. As a result, typical quadcopters, FPV drones, and small recreational unmanned aerial systems generally do not show up as trackable contacts on aviation tracking apps.
Most drones are not designed to transmit ADS-B
The typical drone mission profile focuses on navigation, control links, and payload tasks, not on participating in manned air traffic surveillance. While some specialized unmanned aircraft systems can be equipped with aviation-grade transponders, the majority of drones sold to the general public use different communication methods, such as:
- Remote control links that carry command and telemetry between the operator and the aircraft
- Video/data links (especially in FPV) that transmit visual feed and control-related data
- Internal flight controllers that manage stabilization and navigation without publishing ADS-B messages
Because these signals are not ADS-B broadcasts suitable for the Flightradar24 network, there is usually nothing for the app to map.
How Different Drone Types Map (or Don’t) on Flightradar24
| # | UAS category | Typical broadcast used for tracking | Flightradar24 visibility | Visibility score (0–10) |
|---|---|---|---|---|
| 1 | Consumer quadcopter (no aviation transponder) | RC telemetry + video/data links | ★★★ | 0.0 |
| 2 | FPV drone (typical hobby setup) | Control + FPV video/data (not ADS-B) | ★★★ | 0.0 |
| 3 | Commercial multirotor (survey/inspection) | GNSS for navigation + controller telemetry | ★★★ | 1.0 |
| 4 | UAS with aviation transponder capability, but no ADS-B Out | Mode A/C/S style transponder replies (not ADS-B broadcasts) | ★★★ | 2.0 |
| 5 | UAS equipped with ADS-B Out (aviation-grade configuration) | ADS-B Out position/identification messages | ★★★ | 8.0 |
| 6 | Consumer drones using FAA Remote ID only | Remote ID broadcast (compliance telemetry, not ADS-B) | ★★★ | 0.0 |
| 7 | Research/test UAS configured for ADS-B compatibility | ADS-B Out + controlled label/ID behavior in tests | ★★★ | 7.0 |
Signal mismatch: “drone-like” doesn’t mean “ADS-B”
Even if an unmanned aircraft uses GNSS for navigation, that alone does not make it visible on ADS-B-based services. Flightradar24 depends on specific message formats, transponder functionality, and reception coverage. If the drone does not broadcast the required surveillance messages, it cannot be tracked in the way commercial flights are.
When Drone-Like Targets May Appear on Aviation Tracking
Although most drones remain invisible on Flightradar24, users sometimes report seeing objects that appear strange, intermittent, or “unusual.” A few situations can produce contacts that look drone-related at first glance, even though the cause may be something else.
1) A manned aircraft with limited or unusual ADS-B behavior
One of the most common reasons for “drone sightings” on tracking platforms is misidentification. Low-flying aircraft, helicopters, agricultural aircraft, ultralights, and some experimental aircraft may appear on the map and can look drone-like from the ground due to size and speed perception.
Additionally, ADS-B transmission quality can vary. If an aircraft’s ADS-B reports are intermittent due to terrain masking, receiver coverage gaps, or equipment issues, the track can seem jumpy or inconsistent, which can lead observers to assume they are seeing a drone.
2) Receiver coverage and gaps in ADS-B infrastructure
Flightradar24 relies on a distributed network of reception. If an aircraft briefly enters or leaves areas with stronger receiver coverage, tracks can begin or disappear. Similarly, an object that transmits could appear only during moments when the signal reaches a receiver reliably.
While this does not make a typical drone “trackable,” it can make other airborne targets appear sporadically and fuel confusion.
3) Drones or UAS equipped with aviation surveillance or transponder features
In some specialized contexts, unmanned aircraft may be equipped with equipment that more closely resembles aviation surveillance. Depending on hardware and configuration, an unmanned aircraft might transmit in ways that align with ADS-B or related services. When that happens, and when receivers can capture the transmissions, a contact may appear on tracking platforms.
However, this is not the norm for mainstream recreational drones. It is more likely in professional environments such as research, testing, or compliance-driven deployments.
4) Confusing identifiers: aircraft callsigns, hex codes, and label behavior
Even when the underlying target is an aircraft, how it is presented on Flightradar24 can affect perception. Callsigns, aircraft types, and label details depend on available data sources and how the platform correlates transponder information. If a label is missing, delayed, or unclear, a user might assume the contact is something unfamiliar like a drone.
How to Interpret “Tracking” on Flightradar24 vs. Real-Time Detection
It is helpful to separate three concepts: being in the sky, being detected, and being visualized on a specific tracking app.
Detection versus visualization
Flightradar24 visualization depends on decoded ADS-B messages. If a drone does not transmit ADS-B, it may still be detected by other systems (for example, optical identification, acoustic detection, or dedicated RF monitoring), but it will likely not appear on this app.
Latency and update rate
Even for properly equipped aircraft, track smoothness can vary. ADS-B updates occur at intervals that depend on the avionics configuration and other factors. As a result, the map may show slightly delayed or stepped motion. Again, this can resemble “non-manned” movement when viewed casually from the ground.
What You Can Do If You Suspect a Drone in Your Area
If you are trying to identify an aerial object, Flightradar24 can be useful, but only for objects that broadcast ADS-B-like surveillance data. For drone-focused identification, consider these practical steps:
- Compare timing and location: check whether the mapped aircraft contact matches the time and bearing of what you observe.
- Look for altitude cues: small drones often operate at lower heights, while ADS-B-equipped aircraft may be much higher when they appear on the map.
- Use visual confirmation safely: binoculars or a zoom camera can help confirm rotor presence, wing design, or flight pattern.
- Be cautious with assumptions: many “drone” sightings are actually helicopters, aircraft in approach, or experimental manned platforms.
- Follow local reporting guidance: if you suspect an unsafe or unauthorized drone operation, use official channels in your region rather than relying solely on public tracking maps.
Key Takeaways
- Flightradar24 mainly tracks ADS-B equipped aircraft using position broadcasts received by its infrastructure.
- Most consumer drones do not transmit ADS-B, so they usually do not appear as trackable contacts.
- “Drone-like” contacts on Flightradar24 are often misidentifications of manned aircraft or effects of reception gaps and label behavior.
- In rare cases, specialized unmanned aircraft systems may transmit compatible surveillance messages, allowing a visible contact—if reception and data formats align.
If your goal is understanding whether a specific object is a drone, the safest approach is to treat Flightradar24 as an ADS-B-focused aircraft tracker and corroborate with direct observation and local guidance. That combination will get you closer to the truth than relying on the map alone.
📋 About This Article
Flightradar24 usually can’t reliably track drones, because it mainly follows signals sent by aircraft transponders rather than small unmanned aircraft. This article is for curious flyers, hobbyists, and anyone wondering what they’re seeing when a “drone” shows up near a flight path. It explains how Flightradar24 builds its tracks, how drones may or may not broadcast identifying information, and what to expect when you see confusing or drone-like contacts on the map.
Frequently Asked Questions
Can Flightradar24 track drones?
Flightradar24 is primarily designed to track aircraft that broadcast identifying data through aviation transponders (such as ADS-B). Most consumer and hobby drones do not transmit aircraft-grade ADS-B signals, so Flightradar24 typically cannot display drone locations the way it does for airplanes. However, if a drone (or any airborne device) is transmitting in a way that Flightradar24 can receive and interpret—such as using a compatible transponder/position reporting method—its information may appear. In practice, that’s uncommon, and you should not rely on Flightradar24 to monitor drones.
What technology does Flightradar24 use to display flights?
Flightradar24 tracks flights mainly by collecting data from ground-based receivers that capture ADS-B and related aviation broadcasts, then processing that data into a live map with flight identifiers, altitude, speed, and routes. When aircraft do not broadcast usable tracking signals, they generally won’t be visible. Because most drones do not use ADS-B/air-traffic transponder systems designed for manned aviation, their tracking data usually isn’t available to Flightradar24.
Why don’t I see drones on Flightradar24 when people say it can track them?
The most common reasons you won’t see drones are: (1) drones usually don’t transmit ADS-B or compatible transponder data; (2) even if a drone transmits some telemetry, it often isn’t broadcast in the aviation formats Flightradar24 uses; (3) coverage and reception depend on nearby receivers and geography; and (4) drones may broadcast information that cannot be matched to a flight track or identified as a drone. In many discussions, people may be referring to special cases, misinterpretations of map activity, or other tracking apps—so it’s important to understand that Flightradar24’s primary focus is air traffic, not unmanned aircraft monitoring.
Are there any situations where a drone could appear on Flightradar24?
Yes, but only under unusual circumstances. If an airborne device is transmitting aviation-style position data (e.g., ADS-B with identifiable fields that Flightradar24 can parse) and the data is received by compatible sensors, it may show up as an object on the map. That said, Flightradar24 does not generally categorize or verify targets as “drones,” and most drone operations are not set up to use these systems. Even if you see an unusual track, it may still be an aircraft, a test flight, a satellite/receiver artifact, or other non-drone activity.
What should I use instead of Flightradar24 to track drones?
If your goal is to detect or monitor drones, the right tool depends on your intent and environment. For personal awareness, you can use approved “remote ID” and monitoring options where legally available, or rely on visual observation and geofenced safety features in drone apps. For aviation or security use cases, specialized drone-detection systems (such as RF detection, radar, optical/thermal tracking, or combined sensor solutions) are typically used because they are built to identify unmanned aircraft rather than decode ADS-B traffic. If you’re concerned about safety or illegal drone activity, contact local aviation authorities or law enforcement rather than relying on Flightradar24.
