You can watch a plane move across the map in real time using free websites that pull data from radar and aircraft transponders
When a flight is delayed, one of the first things you want to know is where the plane actually is. The good news: you don't need special access or an airline account. Websites like FlightRadar24, ADS-B Exchange, and FlightAware show live aircraft positions updated every few seconds. They work by collecting signals that planes broadcast automatically — the same signals air traffic control uses. You can search by flight number, aircraft registration, or route, and watch the plane move in real time on a map.
These tools are free to use in their basic form, though some offer paid upgrades with extra features like historical flight data or alerts. The information is public and legal to view — it's the same data that aviation enthusiasts, pilots, and air traffic controllers use every day.
Key Takeaways
- FlightRadar24, ADS-B Exchange, and FlightAware are the three most reliable free sites for live plane tracking and work on any web browser or smartphone.
- Search by flight number (the airline code plus digits, like AA123) to find your specific flight and see its current position, altitude, and speed.
- Live tracking shows you whether a plane is still on the ground, in the air, or has landed, which helps explain why your flight is delayed.
- These sites update every few seconds and work worldwide, though coverage is best over North America, Europe, and populated areas with good radar infrastructure.
- You can also call the airline directly or check their website for official delay information, which may include reasons the live map alone won't show.
Finding your flight number and searching the tracking sites
Your flight number appears on your booking confirmation, ticket, or airline app — it's usually two letters followed by one to four digits (for example, United 456 or Southwest 1247). This is the fastest way to find your plane on a tracking site.
Go to FlightRadar24.com, ADS-B Exchange, or FlightAware.com and look for a search box at the top of the page. Type in your flight number exactly as it appears on your ticket. The site will show you a list of recent flights with that number; select the one that matches your departure date and time. Within a second or two, you'll see a map with your plane's current position, a line showing its route, and a sidebar with details like altitude, speed, and how long until landing.
If you don't have the flight number, you can search by the airline name and departure city, though this takes longer because you'll see multiple flights. You can also search by the aircraft's tail number (the registration code printed on the fuselage), which appears in your airline app or confirmation email on some carriers.
What the live map tells you about your delay
Once you find your flight, the map shows whether the plane is still on the ground at the departure airport, in the air, or already landed. A plane sitting at the gate or on the tarmac explains a ground delay. A plane that hasn't taken off yet at all — even though the scheduled departure time has passed — confirms the flight is delayed before takeoff.
The sidebar displays the plane's current altitude (in feet), ground speed (in knots or kilometers per hour), and how far it has traveled. If the plane is airborne, you can see roughly how much flight time remains by comparing the distance left to the speed it's traveling. For example, if a flight from New York to Los Angeles has 1,500 miles left and is flying at 450 miles per hour, you can estimate about 3.5 hours until landing.
The map also shows the planned route as a line from departure to arrival. If the plane is following that line, it's on schedule. If it's taking a different path, it may be avoiding weather or following air traffic control instructions, which can add time to the flight.
Understanding coverage and why some planes don't appear
Live tracking works because planes broadcast their position, altitude, and speed automatically via a system called ADS-B (Automatic Dependent Surveillance-Broadcast). Ground receivers pick up these signals and send them to the tracking websites. Coverage is excellent over North America, Europe, and most populated areas, but thinner over oceans, deserts, and remote regions.
Some planes may not appear on the map at all. Military aircraft and some government flights don't broadcast ADS-B signals, so they won't show up. A few commercial planes have the system disabled for privacy reasons, though this is rare. If your flight doesn't appear, it doesn't mean something is wrong — it usually means the plane isn't broadcasting or you're searching in an area with weak coverage.
If you can't find your flight on one site, try another. FlightRadar24 and ADS-B Exchange often have slightly different coverage because they use different networks of ground receivers. FlightAware tends to have the most complete data for U.S. domestic flights because it integrates with airline systems directly.
Comparing the three main tracking sites
| Site | Best for | Coverage | Free features |
|---|---|---|---|
| FlightRadar24 | Detailed flight information and historical data | Global, especially strong in Europe and North America | Live tracking, basic flight details, 7-day history |
| ADS-B Exchange | Raw radar data and military aircraft (when visible) | Global, community-powered network | Live tracking, no ads, unlimited history |
| FlightAware | U.S. flights and airline-provided delay information | Excellent in U.S., good internationally | Live tracking, delay alerts, airport status |
All three are free to use at the basic level. FlightRadar24 and FlightAware offer paid subscriptions ($5 to $10 per month) that remove ads and add features like detailed aircraft photos or historical flight playback. ADS-B Exchange is entirely free and ad-free, though it has a more technical interface.
Using tracking data alongside official airline information
Live tracking shows you where the plane is, but it doesn't always explain why it's delayed. The airline's website or app often provides the reason — weather, mechanical issue, crew scheduling, or air traffic control delays — which the tracking map won't show.
Check your airline's app or website for official updates on your specific flight. Many airlines send push notifications or emails when a delay is announced or when the flight is boarding. The airline can also tell you whether the delay is expected to be short (under an hour) or longer, and whether they're offering rebooking on other flights.
If you're at the airport, ask a gate agent directly. They have access to real-time information about gate assignments, boarding times, and reasons for delays that may not be posted online yet. Combining the live map with official airline information gives you the clearest picture of what's happening with your flight.
Tracking a plane when you're not the passenger
You can track any commercial flight in real time, even if you're not booked on it. This is useful if you're picking someone up and want to know when they'll land, or if you're curious about a flight you see overhead. The same search methods explore — use the flight number if you know it, or search by airline and route.
Some tracking sites let you set up alerts for specific flights. FlightAware, for example, allows you to enter a flight number and receive notifications when the plane takes off, lands, or experiences a significant delay. This is handy if you're waiting to pick someone up and don't want to refresh the page constantly.
Frequently Asked Questions
Can I track a plane if I only know the airline and departure time?
Yes, but it takes longer. Go to the tracking site and search by airline name and departure city. You'll see a list of all flights from that airline on that day; find the one matching your departure time. Once you have the flight number, you can bookmark it for future reference.
Why does the plane's position sometimes jump or disappear for a few seconds?
The tracking sites update every few seconds based on signals from ground receivers. If a receiver loses the signal temporarily, the map may show a gap. This is normal and doesn't mean anything is wrong with the plane — it's just a gap in the data stream.
Can I see how much fuel the plane has left?
No. The tracking data includes position, altitude, and speed, but not fuel quantity. Airlines monitor fuel constantly, and if there were a fuel emergency, the crew would declare it to air traffic control, which would be reported in news outlets, not on a tracking map.
What's the difference between ground speed and airspeed?
Ground speed is how fast the plane is moving relative to the ground (what the tracking sites show). Airspeed is how fast it's moving through the air. Wind affects the difference — a plane flying into a headwind has lower ground speed than airspeed. For tracking purposes, ground speed tells you how quickly the plane is covering distance toward its destination.
Do I need an account to use these tracking sites?
No. All three sites let you search and view live flights without signing up. Creating a free account on FlightAware or FlightRadar24 lets you save favorite flights and set up alerts, but it's optional.