
ABOUT CIRIUM
The world’s most trusted source of aviation analytics
Leading airlines, airports, lessors, manufacturers and travel companies rely on Cirium for a single, authoritative view of what is happening across aviation and what comes next.
When the industry works from the same information, the time between spotting a change and acting on it shrinks. Decisions carry more confidence and less risk. Performance is measured against benchmarks everyone agrees on.
WHO RELIES ON CIRIUM
115 years of aviation. Over 1,600 customers. Every corner of the aviation network.
A majority of the world’s top 100 airlines. Over 700 airports globally. A majority of the top 100 lessors. The world’s top four aero-engine manufacturers. Decade-long partnerships with all major OEMs. Leading aviation authorities including the FAA and Eurocontrol. World-leading travel agencies and tech companies including Google.
WHAT CIRIUM IS BUILT ON
The connected model
Cirium has built a structured view of aviation over time. This is more than a group of datasets assembled in one place. It is a connected model of the industry, designed so that the same underlying information can be used consistently across different decisions and different parts of your business.
At the center of that is an Cirium Knowledge Graph, which links the relationships between the moving parts of the industry and keeps them aligned as conditions change. That gives the industry a coherent view of what is happening, without having to reconcile multiple versions of the truth.

The standards
Cirium has set the standards the industry uses to measure performance.
The On-Time Performance program sets a common reference point for operational reliability. It is used by airlines, airports and regulators worldwide to benchmark and compare performance on a consistent basis. When an airline reports its On-Time Performance ranking, the methodology behind that number is Cirium’s.
EmeraldSky brings consistency to the measurement of aircraft flight emissions. Sustainability is now a factor in fleet planning, route economics and investment decisions. EmeraldSky gives the industry the independent benchmark it needs to measure and compare flight emissions performance.
Together, these give the industry benchmark analytics built on agreed definitions and independent measures.


The data
Every data point is validated across multiple independent sources before it reaches a customer.
25M
Over 25M flight updates across 3,000 live data sources daily.
900
Data spanning over 900 airline schedules.
360,000
Insights on over 360,000 airport pairs.
480,000
Details on over 480,000 unique aircraft.
99.5%
Coverage of 99.5% of scheduled passenger seats worldwide.
PUTTING THE ANALYTICS TO WORK
Cirium analytics are embedded where operational decisions are made.
Cirium connects flight status and impact on connections in a single real-time view, giving operations teams enough lead time to manage disruptions before they compound.
Traffic shifts, competitive capacity changes and fare movements show up in Cirium’s data months before they become obvious in the market. Airlines and airports can read those signals while their planning decisions are still open.
Emissions data feeds directly to the teams where fleet and route decisions are being made. Carbon performance becomes part of the planning process from the start.
Cirium brings together utilization, valuation and market data so that fleet choices, from acquisition to retirement, are built on a complete picture.
Cirium sits between raw data and practical action.
That’s where the value is.
WHERE IT IS ALL GOING
Understanding what is happening is the starting point. The advantage comes from knowing what happens next.
Cirium is extending its data, benchmarks and knowledge graph into predictive analytics, giving customers earlier signals and more time to act.
TIMELINE
An evolving data analytics powerhouse. Deep industry roots, fused with modern technology.
FAQ
About Cirium
Cirium is the aviation industry’s most trusted source of analytics. We unify data across fleets, schedules, flights, and traffic and fares to give the industry a single, authoritative view of what is happening and what comes next. Cirium is part of LexisNexis Risk Solutions, a RELX business.
Aviation data is typically fragmented by domain. Cirium connects it into a single structured model of the industry, built on an Aviation Knowledge Graph that keeps the relationships between datasets aligned as conditions change. Customers work from one coherent picture. Cirium also sets the standards the industry uses to measure performance, through On-Time Performance for operational reliability and EmeraldSky for flight emissions.
Cirium innovates by starting with real operational problems. Every capability we build comes from direct engagement with airlines, airports and customers, focused on where better data and earlier insight can improve the quality of a decision. Right now, that means extending the platform into predictive analytics and deepening the integration of emissions data into operational planning.
Cirium’s roots go back to 1909, with the launch of the world’s first weekly aerospace magazine. Over the following century, the company built the industry’s most comprehensive data portfolio through organic development and strategic acquisitions, including Ascend, Innovata, FlightStats, Diio and Snowflake Software. The Cirium brand launched in 2019 to bring the full portfolio together under one identity.
Cirium draws from over 3,000 live data sources, processing more than 25 million updates daily. No single source is taken at face value. Inputs are compared, validated and reconciled before the data reaches customers. Cirium operates independently of any airline, airport or manufacturer, which means its benchmarks and analytics carry no commercial bias. On-Time Performance and EmeraldSky are used industry-wide because they are trusted as impartial.
Cirium delivers data and analytics through operational dashboards, API integrations, analytical tools and consulting engagements. Customers can explore the full portfolio at cirium.com or contact the Cirium team directly.






















































