The path to ‘Net Zero’: monitoring the flight CO2 emissions of the world’s largest airlines


Stay ahead in the evolving aviation finance market with Cirium’s new emissions report for Impact on Sustainable Aviation members and partners.
As regulatory frameworks and industry initiatives drive significant changes in monitoring and reporting CO2 emissions, this report provides insights to help you navigate the CO2 emitted and ASKs flown compared with 2019 per the world’s largest airlines.
- Review the ASKs flown by airlines in 2024 compared to 2019 and previous years
- Identify the overall CO2 emitted from the largest airlines in 2024
- Uncover which airlines delivered both ASK growth and overall reductions in CO2 emitted between 2019 and 2024
- Quickly identify the airlines which have delivered greater carbon efficiency






















































