How to Build a Real-Time Flight Tracker with ADS-B Data and SkyLink API

Real-time flight tracking has become a cornerstone of modern aviation applications—from consumer flight trackers to enterprise dispatch tools. At the heart of every reliable flight tracker is ADS-B (Automatic Dependent Surveillance-Broadcast) , a surveillance technology that allows aircraft to broadcast their position, altitude, speed, and identification to ground stations and other aircraft. SkyLink API gives developers direct, hassle-free access to this global ADS-B data stream through a single, clean REST API. What Is ADS-B and Why Does It Matter? ADS-B is a system in which aircraft periodically broadcast their GPS-derived position and other flight parameters. Unlike traditional radar, ADS-B requires no interrogation signal—aircraft transmit automatically, making coverage denser and more cost-effective. Today, the vast majority of commercial aircraft worldwide are ADS-B equipped, and the FAA mandated ADS-B Out compliance for all aircraft in controlled US airspace since January 2020.