
Aircraft and flight CO2 emissions
Want to report flight emissions and inform policies with confidence and precision? Cirium’s EmeraldSky, delivers >99% accurate CO2 insights, audited by EY and accredited by the Rocky Mountain Institute for the Pegasus Guidelines. Trusted by Impact on Sustainable Aviation and airports and corporates worldwide.

Flight Emissions Review
As the aviation industry faces growing expectations to decarbonize, accurate and independent emissions data is no longer a nice-to-have — it’s essential.
We’re delivering emissions intelligence – data and insights that empower informed decisions across the aviation industry. Highlights include:
- Global Airline Category Rankings
- Regional Performance
- Route-Level Improvements
- Operational Insights
Gain comprehensive operational insights supporting industry-wide efficiency and actionable intelligence. Download the full report now!
Cirium’s emissions estimates are endorsed by FTSE 100 company, RELX for business travel, and praised for accuracy by American Airlines and Virgin Atlantic.
- Identify sustainable air travel providers by market
- Improve compliance with environmental disclosure regulations related to business travel
- Enable travellers to make more informed decision about sustainable flight options.
- Improve investor appeal through improved ESG performance and reporting.
- Optimize spending on carbon offset and elimination initiatives
- Enhance benchmarking flight emissions across fleets of owned aircraft, as well as comparisons between different airlines.
- Improve environmental disclosure and reporting related to leased fleets.
- Identify opportunities to reduce customer emissions through fleet utilization and potential fleet upgrades.
- Improve investor appeal through ESG performance and reporting.
- Benchmark emissions from owned, leased, and partner aircraft.
- Highlight unique sustainable flight options.
- Find ways to cut emissions, like using efficient aircraft or replacing older models.
- Help travelers book with awareness of sustainable choices.
- Show investors the commitment to Net Zero goals.
- Tackle public skepticism on flight emission data accuracy.
- Improve environmental disclosure and reporting related to departing and arriving flights for regulatory compliance.
- Influence more use of sustainably efficient aircraft through optimized landing fees and incentives
- Benchmark flight emissions across other airports.
- Improve environmental disclosure and reporting related to fleets.
- Identify opportunities to reduce emissions through fleet utilization and potential fleet upgrades.
- Benchmark CO2 emission improvements of fleet and equipment upgrades

Customer Testimonials
EmeraldSky delivers unmatched precision in CO2 emissions measurement, empowering stakeholders to scrutinize flight emissions with unprecedented detail.
Independent, Verified and trusted
- Cirium curates and processes all of it data inhouse
- Cirium is the leader in aviation data.
- EmeraldSky has been verified by airlines and broader industry to be up to 99% of actual flight emissions for a specified set of mission, aircraft and payload inputs.
Leveraging Cirium schedules, flight and fleet data
- 920+ airline schedules updated 280,000 times a day
- Over 25M updates across +600 live data sources daily
- Fleet details for over 480K aircraft, 770 aircraft types and over 300 attributes per aircraft
- Rigorous data quality controls
Underpins Cirium’s flight emission analytics
- Only provider of flight emissions data based on actual flight operations
- Accurate forecasted flight emissions leveraging advanced machine learning
- Emission measures by aircraft and flight are available in days not months
- Granular view of emissions by aircraft, flight, owner, operator, tonne of cargo and cabin/seat.
Use fuel burn and CO2 emissions data you can trust

Learn about the Cirium products and services that feature schedule, flight, and aircraft data
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Reducing aviation’s emissions will require partnership among the airlines, our suppliers and our customers – and it’s important to build those partnerships on sound emissions data and calculations. Cirium brings deep aviation expertise to the table on this important topic, and the approach they’ve taken considers numerous variables of an aircraft and its operations.




