The fastest way to find out what's overhead

The easiest tool is Flightradar24, a free website and app that shows aircraft in real time on a map. Open it on your phone or computer, zoom to your location, and you'll see planes currently in the air with their flight number, altitude, speed, and destination. The same information appears on ADS-B Exchange, which is free and ad-free. Both pull data from ADS-B (Automatic Dependent Surveillance-Broadcast), a system that aircraft transmit automatically so air traffic control and other planes can see them.

If you want to know about a plane you just heard, open Flightradar24 right away—aircraft move fast, and within a minute or two it may have passed out of your when ready area. Tap or click on any plane icon to see its flight number, airline, aircraft type, and where it's headed. That flight number is the key: you can search it on the same app to see its route history, whether it was delayed, and where it came from.

For a plane you heard but didn't see, the timing matters. Note what time you heard it, then open the app and look at the flight history for your area during that minute or two. Most planes are loud enough to hear from several miles away, so expand your search area on the map if nothing obvious appears directly overhead.

Key Takeaways

  • Flightradar24 and ADS-B Exchange are free websites and apps that show every commercial aircraft's location, flight number, and destination in real time.
  • The flight number shown on these apps lets you find out the airline, where the plane came from, and where it's going.
  • Aircraft transmit their location automatically through ADS-B, so the data is live and accurate within seconds.
  • If you heard a plane but didn't see it, note the time and search the app's history for your area during that minute to find the flight.
  • Military aircraft, small private planes, and some helicopters may not show up on these apps because they don't always transmit ADS-B data.

Why some planes don't show up on tracking apps

Not every aircraft in the sky broadcasts its location. Military jets, transport planes, and helicopters often turn off ADS-B transmission or don't use it at all, so Flightradar24 won't show them. Small private planes and older aircraft may not have ADS-B equipment. Police helicopters, news helicopters, and medical helicopters usually don't transmit, so you won't see them on the map even though you can hear them clearly.

If you hear a loud, low aircraft that doesn't appear on Flightradar24, it's likely military, law enforcement, or a medical flight. You can sometimes identify it by sound—military jets have a distinctive high-pitched roar, while helicopters have a rhythmic thumping. If you're near a military base, Air Force training route, or major airport with a hospital, these flights are routine and part of normal operations in your area.

Reading the information on Flightradar24

When you tap an aircraft on the map, you'll see its flight number (like "AA1234"), the airline name, the aircraft type (like "Boeing 737"), its current altitude in feet, its ground speed in knots or kilometers per hour, and its destination airport code. The flight number is the most useful piece—it's the same number printed on your ticket if you were a passenger on that flight.

The altitude tells you how high the plane is. Commercial aircraft cruise between 30,000 and 42,000 feet, but they climb and descend near airports, so a plane you hear overhead might be at 5,000 to 15,000 feet. The destination airport code is a three-letter abbreviation: LAX is Los Angeles, JFK is New York, ORD is Chicago. If you search the flight number in a search engine, you can learn about it was delayed, cancelled, or on time.

Why planes fly over your home at certain times

Aircraft follow set routes called airways and approach corridors. Planes heading to or from a major airport use the same flight paths repeatedly, which is why you might hear the same routes at the same times every day. If you live near a busy airport, under a departure route, or along a common arrival path, you'll hear more traffic during peak hours—usually morning and evening.

Planes also follow the most fuel-efficient routes, which means they fly in straight lines between waypoints (navigation points with names like "SHAMU" or "DOWDY"). If your home sits on one of these waypoints or under a corridor, you'll be in the flight path. Air traffic control assigns these routes to manage the flow of planes and keep them safely separated.

Weather can also change flight paths. If there's a thunderstorm in the normal route, planes will be rerouted around it, which may send them over your area temporarily. Runway changes at the airport—which happen based on wind direction—can shift which neighborhoods hear the most traffic.

Using ADS-B Exchange for more detailed history

ADS-B Exchange (at adsbexchange.com) works similarly to Flightradar24 but includes some aircraft that Flightradar24 filters out, such as military planes and government aircraft. It's free and has no ads. The interface is slightly more technical, but the core function is the same: zoom to your location, see planes overhead, and click to see details.

ADS-B Exchange also lets you search by flight number or aircraft registration (a tail number like "N12345"). If you want to track a specific plane over time or see its full flight history, this is a good option. The data refreshes every few seconds, so you're seeing real-time information.

What to do if you see something unusual

If you see a plane flying unusually low, making sharp turns, or hovering in one area, check Flightradar24 first. Most unusual-looking flight patterns are normal operations: planes descending into an airport, helicopters doing training, or aircraft holding in a pattern while waiting to land. The app will show you the flight number and destination, which usually explains what you're seeing.

If an aircraft is in distress, air traffic control is already aware and managing it. You don't need to report it unless you see debris falling or a crash. If you genuinely believe you've witnessed an emergency, call 911. For other observations—unusual noise, frequent flights over your home, or questions about a specific route—you can contact your local airport's noise complaint line. Most major airports have a dedicated phone number and online form for noise concerns.

Frequently Asked Questions

Can I see helicopters on Flightradar24?

Some helicopters show up, but many don't. Medical helicopters, police helicopters, and news helicopters usually don't transmit ADS-B data, so they won't appear on the map. Military and civilian helicopters that do transmit will show up. If you hear a helicopter but don't see it on the app, it's likely one that doesn't broadcast its location.

Why do planes fly over my house at night?

Planes fly 24 hours a day, and major airports operate around the clock. Night flights are often cargo planes, red-eye passenger flights, or international flights that arrive early morning. If you live under a flight corridor, you'll hear traffic at all hours. Some airports have noise restrictions that limit which runways can be used at night, but flights still happen.

Is it normal for planes to fly so low?

Yes. Planes descend to 5,000 feet or lower when approaching an airport, and they climb through those altitudes after takeoff. If you live within 10 to 15 miles of a major airport, you'll regularly see planes at low altitudes. This is normal and safe—air traffic control manages the descent and climb to keep planes properly separated.

Can I learn about a plane was delayed?

Yes. Once you have the flight number from Flightradar24, search it in a search engine or on the airline's website. You can see whether it arrived on time, was delayed, or was cancelled. Some flight tracking apps also show delay information directly when you tap a plane on the map.

What does it mean if a plane circles the same area?

A plane circling usually means it's holding in a pattern while waiting to land. This happens when the airport is busy or there's a delay. The app will show the flight number and destination, so you can confirm it's waiting to land rather than experiencing an emergency. Air traffic control assigns these holding patterns to keep planes safely separated while they wait.