Flightradar24

Each aircraft shows altitude, speed, and registration details where available. Subscriptions add longer flight history, weather overlays, and extra data. The site also covers airports with arrival and departure boards.

Aviation professionals use it to follow traffic and verify flight status, though coverage varies by region and it is not an official air traffic source.

FlightAware is the main alternative. Flightradar24 suits controllers, dispatchers, and aviation fans who want a quick traffic picture.