Real-time European air traffic visualization
Flight data comes from the OpenSky Network, a community-driven, open-source platform that provides real-time ADS-B (Automatic Dependent Surveillance-Broadcast) flight tracking data.
The network consists of thousands of volunteer-operated receivers around the world that collect transponder signals from aircraft and share them publicly.
The map refreshes every 10 seconds with new position data. Statistics update every 30 seconds.
Position data typically has a latency of 5–15 seconds from real-world position due to signal propagation and processing time.
Aircraft are categorized into three size groups based on flight characteristics:
Coverage depends on receiver density — some regions may have gaps. Aircraft without ADS-B transponders or with transponders turned off will not appear.
The classification is approximate, based on altitude and speed heuristics rather than aircraft type database lookups. Some aircraft may be miscategorized.
The API has rate limits. During periods of heavy use, data may be temporarily unavailable or delayed.