You hear a low rumble, look up, and there it is - a jet curving across the sky. Where is it going? Who's flying it? Why is it circling? In 2026 you can answer all of that in about ten seconds, for free, on the device in your pocket. Here's how.
The fast answer
Open flyoverhead.com on your phone, allow location access, and the map centers on you. Every aircraft transmitting ADS-B within a few hundred miles appears as a moving plane icon - color-coded by altitude, oriented in the direction it's heading. Tap any icon and you get callsign, tail number, aircraft type, altitude, ground speed, and where it came from.
No account. No app install. No paywall on the basics. That's the one-paragraph answer if you just want to know what's overhead right now. Keep reading if you want to understand what's actually happening when you see those little planes move across the map.
How a plane “broadcasts” its position
Since 2020 the FAA has required almost every aircraft flying in controlled US airspace to transmit a signal called ADS-B Out(Automatic Dependent Surveillance - Broadcast). About once a second, each plane shouts a short radio message containing its GPS position, altitude, ground speed, heading, and a unique 24-bit identifier called an ICAO24 hex code.
Anyone with a $30 USB radio receiver and an antenna can pick those signals up, and plenty of people do. Fly Overhead pulls those broadcasts together in real time so the map you see has fewer gaps than any single receiver could cover on its own.
What this means for you: almost every plane you see in US airspace - airliners, business jets, training Cessnas, helicopters, sometimes blimps - is broadcasting its identity. The exceptions are mostly very old aircraft flying outside controlled airspace, certain military flights, and a handful of privacy-blocked tail numbers.
What the icons and colors actually mean
- Plane shape: rough aircraft category - airliner, light jet, prop, helicopter, glider. Derived from the FAA aircraft registry cross-referenced with the ICAO24 hex.
- Color: altitude band. Blue is low (a few thousand feet), green is medium, orange and red are cruise altitude (30,000+ feet). At a glance you can tell whether the plane overhead is landing, taking off, or just passing through.
- Orientation: the plane icon points the direction the aircraft is heading. The little trail behind it is the recent flight path.
- Speed: shown when you tap the icon. A 737 cruises at ~450 knots ground speed. A Cessna 172 trains at 90-110 knots. If the speed looks weird, the aircraft might be in a turn, fighting a strong headwind, or genuinely something unusual.
Common questions, answered
Why is that plane circling?
Five common reasons: (1) it's in a holding pattern waiting for a slot to land at a busy airport, (2) the pilot is burning off fuel after an emergency declaration so they can land at safe weight, (3) it's a training flight practicing maneuvers, (4) it's a medevac or law enforcement aircraft orbiting a scene, or (5) it's a banner-tow, pipeline patrol, or aerial-survey aircraft doing its job. Tap the plane in Fly Overhead and check the callsign - callsigns starting with LIFE, MEDEVAC, or POLICE tell you immediately. Generic numeric callsigns usually mean training.
I can hear it but can't find it on the map
Three possibilities. First, the aircraft might not have ADS-B Out enabled - rare but possible for older general-aviation planes flying outside controlled airspace. Second, the data feed might have a brief gap; refresh the page. Third, it might be a military aircraft with its transponder set to a privacy mode. Fly Overhead shows everything that's publicly broadcasting; it doesn't show what isn't being transmitted.
Who's actually flying that plane?
Airline flights are easy - the callsign tells you (UAL is United, AAL is American, DAL is Delta). For private aircraft, tap the icon and you'll see the registration number (the “N-number” in the US). Fly Overhead cross-references that against the FAA registry to show the registered operator, aircraft type, and base airport.
A note on privacy: the FAA registry is public, so registration data is public. Some owners use trust arrangements or block their registration from real-time displays. That's their right; we honor those blocks.
How accurate is the position?
ADS-B GPS reports are accurate to within about 10 meters. The map updates at 1 Hz (once per second), so a 737 at cruise moves about 230 meters between updates - visible as a smooth glide on the map. For situational awareness this is excellent. For navigation, Fly Overhead is explicitly not certified and pilots should never rely on it as a primary source. It's an enthusiast and pilot-awareness tool, not an air-traffic-control system.
Going further: what pilots use this for
If you're a general aviation pilot - someone who flies their own Cessna, Cirrus, or Bonanza - Fly Overhead pairs the same live map with anElectronic Flight Bag: pre-flight route briefings grounded in real terrain and weather, a voice debrief that auto-fills your logbook, IFR/VFR charts, and RightSeat briefing support. The free tier covers the live map; paid tiers start at $1.99/month and the EFB at $7.99/month.
But you don't have to be a pilot to use any of this. Spotters, parents pointing out airliners to their kids, neighbors trying to figure out why a helicopter is hovering over the block - Fly Overhead is for all of you. Open the map next time you hear engines.