About Carbon Sky Index

Private aviation activity generates significant emissions data — but that data has historically been fragmented, inaccessible, and difficult to work with. Carbon Sky Index structures that data into time-series analytics, emissions intelligence, and route patterns that professionals can actually use. We believe rigorous, transparent methodology produces better research, better reporting, and better decisions.

Carbon Sky Index is a private aviation intelligence platform. We ingest ADS-B flight data, calculate emissions using an ICAO-aligned methodology, and transform raw records into structured analytics — route patterns, emissions trends, frequency data, and operating cost estimates — updated continuously.

Emissions Leaderboard

Rankings of highest-emission aircraft

Aircraft Lookup

Search specific aircraft by registration number

Route Intelligence

Discover the most frequently flown routes

Flight Analytics

In-depth route and trend data for aircraft

Neutrality

We present data without bias, letting the numbers speak for themselves.

Transparency

All our methodology and data sources are openly documented.

Rigour

Our emissions calculations are based on established ICAO methodology, with known limitations openly disclosed.

Accessibility

Core flight and emissions data is freely accessible. Professional tools and deeper history are available to subscribers.

20K+

Aircraft Tracked

1.8M+

Flights in Database

250K+

Routes Analysed

12+

Months of Historical Data