Are live flight trackers accurate?

For aircraft without known destination, position is estimated for up to 10 minutes. The position is calculated based on many different parameters and in most cases it's quite accurate, but for long flights the position can in worst cases be up to about 100 km (55 miles) off.



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Can flight tracker be wrong? Transponders can generate errors by transmitting random or incorrect position information, like the Air Canada flight below. This leads to impossible looking flight paths that often contain a jagged, switch-back look.

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Flightradar24 is a global flight tracking service that provides you with real-time information about thousands of aircraft around the world.

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The position is calculated based on many different parameters and in most cases it's quite accurate, but for long flights the position can in worst cases be up to about 100 km (55 miles) off. In settings there is an option to set for how long time you want to see estimated aircraft on map.

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Flightradar24 is a global flight tracking service that provides you with real-time information about thousands of aircraft around the world. Our service is currently available online and for your iOS (iPhone, iPad, iPod Touch) or Android device.

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I often see military flights in the sky, which do not appear on FlightRadar24. I do understand that low-flying military airplanes do no necessarily get picked up by these trackers, and that some military aircrafts switch of transponders. However some flight do appear on this ADSB-Tracking website.

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I was following an aircraft when it suddenly disappeared, why? In most cases, our receiver network is no longer receiving a signal from the aircraft. This tends to be more common when an aircraft is flying over large bodies of water. It can also be a technical problem somewhere.

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Flight delays are so common, in fact, that statistics consider a flight to be “on time” as long as it's within 15 minutes of the time on your ticket. One pilot confessed to Reader's Digest that airlines exaggerate their times to make themselves look better.

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This is often done for security reasons. It means the owner has requested that the craft's details (tail #, filed flight plan, etc) not be displayed.

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The closest competitor to flightradar24.com are flightstats.com, flightaware.com and airportia.com. To understand more about flightradar24.com and its competitors, sign up for a free account to explore Semrush's Traffic Analytics and Market Explorer tools.

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FlightRadar gives detailed information about all flights in the near future and the past while Plane Finder shows flights which have departed and are in the air. You can't see flights in the future. A point for FlightRadar. Plane Finder allows you to set multiple Filters at once, FlightRadar doesn't.

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Blue: Aircraft displayed as blue icons are currently being tracked via satellite. Satellites are collecting the ADS-B signals from aircraft and transmitting them to the Flightradar24 network.

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Flightradar24 is a Swedish company that provides real-time flight tracking data. The company was founded in 2006 by two aviation enthusiasts who wanted to create a way for people to track aircraft in real time.

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Red: When an aircraft is displayed as red that means that you are currently following that specific aircraft on the map or that an emergency squawk is on for this aircraft.

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From the time it lifted off from Kuala Lumpur at 15:42 local time, SPAR19 was already the most tracked flight on Flightradar24 among active flights. By the time it landed in Taipei, SPAR19 was being tracked by more than 708,000 people around the world, making it the most tracked live flight in Flightradar24 history.

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From 3 March 2020, ADS-B data collected by satellite was made available to all users. Aircraft located using satellite data are coloured blue on the map, and yellow if located by terrestrial receivers.

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The most tracked flight consists of 4.79 million trackings and was achieved by ZZ177 RAF Boeing C-17A Globemaster III, carrying Queen Elizabeth II's coffin, from Edinburgh, Scotland to London, England on 13 September 2022.

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Modern-day technology on commercial airliners is so good that air traffic control can track the aircraft's position even when it's flying over an ocean.

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While it may sound shocking to some, the simple fact is that some aircraft may simply not have their transponder on, or it may be temporarily off, or they may be carrying passengers or cargo, which warrant deactivation. In addition, not all airspace activity is always relayed to FlightRadar24 at all times.

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