You can see flight paths in real time using free apps and websites that track nearly every commercial aircraft in the sky. The easiest option is opening Flightradar24 or FlightAware on your phone or computer, where you’ll see a live map of planes moving along their routes. Some apps even let you point your phone at a plane overhead and instantly identify it.
How Real-Time Flight Tracking Works
Modern flight tracking relies on a system called ADS-B, which stands for Automatic Dependent Surveillance-Broadcast. Every equipped aircraft automatically transmits its GPS position, altitude, ground speed, and identification once per second. No pilot input is needed. That signal goes out to ground stations and to other aircraft, and anyone with the right receiving equipment can pick it up.
ADS-B replaced older radar technology with satellite-based positioning. Unlike radar towers, which are large and limited in where they can be installed, ADS-B ground stations are small and adaptable. They can be placed in remote locations that radar could never reach, which means coverage extends over oceans, mountains, and rural areas that were previously blind spots. Thousands of these receivers around the world feed data into the tracking platforms you see online.
Best Apps and Websites for Flight Paths
Several platforms turn that raw tracking data into a visual map you can explore. Each has slightly different strengths.
Flightradar24 is the most popular option, offering close to 100 percent coverage of aircraft equipped with transponders. Data arrives with a delay of up to five minutes on the free tier. You can tap any plane on the map to see its origin, destination, aircraft type, altitude, speed, and the full route it’s flying. The app works on iOS, Android, and any web browser.
FlightAware is another strong choice, particularly if weather matters to you. It layers weather radar data onto the flight map, so you can see how storms interact with flight paths in real time. FlightAware also sends push notifications for specific flights, which is useful if you’re tracking someone’s arrival. It has consistently maintained high user ratings while some competing apps have declined in quality.
Plane Finder uses ADS-B signals and adds an augmented reality feature. You point your phone’s camera at a plane in the sky, and the app overlays information about that flight directly on your screen. This is the fastest way to answer the question “what plane is that?” when you spot something overhead.
ADS-B Flight Tracker is a more stripped-down option that connects directly to the broadcast signals aircraft transmit. It’s a good choice if you want a simpler interface focused purely on tracking rather than extra features.
Using Augmented Reality to Identify Planes
If you’re outdoors watching planes and want to know exactly what’s flying above you, augmented reality mode is the fastest method. Plane Finder is the standout app for this. Open the AR view, hold your phone up toward the sky, and the camera feed will show labeled icons over each visible aircraft with its flight number, altitude, and destination.
Flightradar24 also has an AR feature in its paid version. Both apps use your phone’s GPS and compass to match what you’re pointing at with the tracking data, so the overlay stays accurate as you move your phone around. It works best during the day when you can actually see the aircraft, but the data appears regardless.
Viewing Historical and Scheduled Routes
Flight tracking apps show live positions, but you can also look at the fixed routes airlines typically fly between two cities. Flightradar24 and FlightAware both let you search by flight number or route pair (like “JFK to LAX”) and see the path that flight normally takes. FlightAware’s website is especially good for this, showing historical data including past delays, actual departure times, and the specific ground track a flight followed on previous days.
This is useful if you live near an airport and want to understand the regular patterns over your neighborhood, or if you’re curious about the route a specific flight will take before it departs.
Building Your Own ADS-B Receiver
If you want to go beyond apps and directly receive aircraft signals yourself, you can build a personal ADS-B ground station for well under $100. The setup is surprisingly simple and feeds data into the same networks that power Flightradar24 and FlightAware. In exchange for contributing data, those platforms typically give you a free premium account.
The core components are:
- Raspberry Pi (a Pi Zero W works fine), with a small heatsink attached
- SD card (16GB or larger) flashed with PiAware, FlightAware’s free receiver software
- DVB-T USB dongle, a cheap digital TV receiver that picks up the 1090 MHz frequency aircraft use
- Antenna, either the one included with the dongle (trimmed to the correct length for 1090 MHz) or a purpose-built ADS-B antenna for better range
- Power supply for the Pi
You flash the software onto the SD card, plug in the dongle and antenna, power it up, and the Pi begins receiving signals from every ADS-B-equipped aircraft within range. Typical range with a basic setup is 100 to 150 miles, though an outdoor antenna mounted higher up can push that further. One builder housed the entire setup inside a length of 50mm PVC pipe with a small fan for cooling, creating a weatherproof outdoor unit that runs continuously.
The PiAware software provides a local web interface where you can view all detected aircraft on a map from your own browser, independent of any app or website. It’s a surprisingly satisfying way to watch the sky.