Where to Find Live Flight Information

You can track a plane using free websites and apps that pull data from radar systems and airline feeds. The most common tools are FlightRadar24, FlightAware, and Plane Finder—all show aircraft positions, altitude, speed, and estimated arrival time as they fly. You do not need to be a passenger on the flight to use them; anyone can search by flight number, airline, or aircraft type.

If you are tracking a flight you are booked on, your airline's website or app usually has the same information in a simpler format. Most airlines update their flight status pages every few minutes during the flight. The airline app is often faster for checking delays and gate changes than searching a third-party tracker.

For international flights, the tracking data comes from ADS-B (Automatic Dependent Surveillance-Broadcast), a system that aircraft transmit automatically. This signal reaches ground receivers worldwide, so even small planes over oceans show up on public trackers. Military and some private aircraft can disable this signal, so they will not appear.

Key Takeaways

  • FlightRadar24 and FlightAware are the largest free trackers and show real-time position, altitude, speed, and estimated landing time for most commercial flights.
  • Your airline's own website or app is usually the fastest way to see delays, gate assignments, and status changes for a flight you are booked on.
  • Tracking data comes from radar signals that aircraft broadcast automatically, so the information updates every few seconds during flight.
  • You can search by flight number, airline name, or aircraft registration to find a specific plane, even if you are not a passenger.

How to Search for a Specific Flight

On FlightRadar24 or FlightAware, use the search bar at the top of the page and type the flight number—for example, "UA456" for a United flight. The tracker will show you the current position of that aircraft on a map, along with its altitude, ground speed, and the time it took off. If the flight has already landed, you can still see the flight history and how long it actually took.

If you do not know the flight number, you can search by airline and route instead. Type the airline name and departure city, and the tracker will list all flights on that route. This is useful if you are trying to find a friend's flight and only know they are flying from New York to Los Angeles on American Airlines.

For aircraft registration numbers (the tail number, like "N12345"), you can search directly on most trackers. This is helpful if you want to follow a specific plane across multiple flights throughout the day. Plane spotters often use this method to track aircraft they have photographed.

What Information You Will See on a Flight Tracker

A live flight tracker shows the plane's current location on a map, its altitude in feet, its ground speed in knots or kilometers per hour, and the direction it is heading. Most trackers also display the departure and arrival airports, the scheduled arrival time, and how much time remains in the flight. Some show the aircraft type (Boeing 737, Airbus A320, etc.) and the airline operating the flight.

The estimated arrival time updates as the flight progresses. If a plane is flying faster than scheduled, the arrival time moves earlier; if it is flying slower or facing headwinds, the time moves later. This is different from an airline delay announcement—the tracker shows where the plane actually is and when it will land based on current speed and distance, not a formal delay status.

Many trackers also show historical data: how long the flight actually took, whether it arrived early or late, and the route it flew. This information is useful if you want to see patterns—for example, whether a particular route is often delayed or whether a flight typically arrives ahead of schedule.

Tracking a Delayed Flight

When a flight is delayed, the tracker still shows the real-time position of the aircraft. If the plane is still on the ground at the departure airport, the map will show it parked at the gate or in a holding area. The tracker will not tell you why it is delayed—that information comes from the airline—but it will show you that the plane has not taken off yet.

Once the plane is in the air, the tracker shows its actual progress toward the destination. If the airline said the flight would arrive at 8 p.m. but the tracker shows it will land at 7:45 p.m., the plane is making up time. Conversely, if the tracker shows a later arrival than the airline's current estimate, the flight may be facing headwinds or air traffic delays.

For a delayed flight you are booked on, check your airline's app first—it will show gate changes, new departure times, and cancellation notices faster than a third-party tracker. Use the flight tracker as a backup to see whether the aircraft is actually moving or still waiting on the ground.

Why Tracking Data Sometimes Stops or Becomes Inaccurate

Flight tracking relies on radar signals from the aircraft itself. Over oceans or remote areas with few ground receivers, the signal can drop out temporarily. This does not mean the plane has disappeared—it just means the tracking network cannot receive its signal at that moment. The data usually resumes once the aircraft is over land or closer to a receiver.

Occasionally, a tracker will show a plane in the wrong location or with incorrect altitude data. This usually happens when the radar signal is weak or when multiple aircraft are flying close together and their signals overlap. The data corrects itself within a few minutes as the signal strengthens.

Some flights show up on trackers with a delay of a few minutes. This is normal—the data is not truly live but rather updated every 5 to 15 seconds depending on the tracker and the aircraft's location. During takeoff and landing, when the plane is moving slowly, the delay is barely noticeable. During cruise at 35,000 feet, a 10-second delay makes almost no difference to what you see.

Free Trackers vs. Paid Options

FlightRadar24 and FlightAware both offer free versions that show flight position, altitude, and basic information. Their paid subscriptions add features like detailed flight history, airport maps, and the ability to set up alerts for specific flights. For most people tracking a single flight, the free version is sufficient.

Plane Finder is another free option that works similarly to FlightRadar24. It shows the same real-time data and is available as a website and a mobile app. The choice between these trackers comes down to personal preference—they all pull from the same underlying radar data, so the information is essentially identical.

Your airline's app is always free if you are a passenger, and it includes information the third-party trackers do not have: gate numbers, baggage claim information, and official delay reasons. If you are tracking your own flight, start with the airline app. Use a third-party tracker only if you need to see the plane's real-time position or if the airline's app is not updating quickly enough.

Frequently Asked Questions

Can I track a plane if I am not a passenger?

Yes. FlightRadar24, FlightAware, and Plane Finder are public trackers that show any commercial flight in the air. You can search by flight number, airline, or route without being booked on the flight. This is how plane spotters, aviation enthusiasts, and people checking on friends or family members track aircraft.

How accurate is the arrival time shown on a flight tracker?

The estimated arrival time is based on the plane's current speed and distance remaining, so it is usually accurate within 5 to 15 minutes. However, it does not account for unexpected delays like air traffic congestion near the destination airport. For the most official estimate, check your airline's app, which may have updated information from the airline's operations team.

What does it mean if a flight tracker shows a plane circling?

A plane circles when it is waiting to land—usually because the runway is busy or air traffic control is holding it in a holding pattern. The tracker will show the aircraft flying in loops at a lower altitude than cruise. Once the runway is clear, the plane will descend and land. This can add 15 minutes to an hour to the arrival time.

Can I track a private plane or helicopter?

Most private planes and helicopters do broadcast their position on the same radar system as commercial flights, so they appear on public trackers. However, some private aircraft owners disable this signal for privacy. If a private plane does not show up on a tracker, it is likely because the owner has opted out of public tracking.

Why does my airline app show a different arrival time than the flight tracker?

Your airline's app uses information from the airline's operations center, which may include factors the tracker does not know about—such as planned holding patterns, air traffic delays, or weather. The tracker shows only the plane's current speed and distance. Both can be correct; they are just measuring different things.