
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
With growing pressure on aviation to decarbonize, accurate and independent emissions data is now critical to guide decisions, track progress, and deliver real sustainability outcomes.
We deliver trusted emissions data and insights that enable aviation leaders to make informed decisions and advance decarbonization efforts. Highlights include:
- Global Airline Category Rankings
- Regional Performance
- Route-Level Improvements
- Operational Insights

Avianca Scales Connectivity While Cutting Emissions
Avianca achieved a reduction of nearly 20% in its carbon intensity, moving from 82.6 grams of carbon per available seat kilometer to 66.3 grams. This scale of reduction is a feat that few, if any, global carriers have been able to achieve.
Use fuel burn and CO2 emissions data you can trust

THOUGHT CLOUD
EXPLORE THE CIRIUM BLOG
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July 2026 – Southeast Asia On-Time Performance Monthly Report
Read more: July 2026 – Southeast Asia On-Time Performance Monthly ReportRegional OTP fell 4.8 percentage points in July as Southeast Asia’s leading airlines navigated broader performance declines
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How Scoot led the field without the newest fleet
Read more: How Scoot led the field without the newest fleetScoot topped Cirium’s 2025 emissions ranking at 51.0 grams of CO₂ per available seat-kilometer, securing Gold status in the…
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The Monthly On-Time Performance Report – July 2026
Read more: The Monthly On-Time Performance Report – July 2026Global Airline Performance Faces a Critical Summer Test
























































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.


