Global airline GHG emissions by company 2023

Many of the world's major airlines are responsible for emitting millions of tons of greenhouse gases into the atmosophere every year. In 2023, American Airlines' operational scope 1 and scope 2 emissions totaled almost 38 million metric tons of carbon dioxide equivalent (MtCO₂e), only slightly more than United Airlines and Delta Airlines. These three airlines are among the largest airlines in the world based on revenue. In total, these 12 airlines produced more than 300 MtCO₂e in 2023.

Reported operational greenhouse gas emissions of selected major airlines worldwide in 2023 (in million metric tons of carbon dioxide equivalent)

Characteristic	Emissions in MtCO₂e
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Release date

October 2024

More information

Region

Worldwide

Survey time period

2023

Special properties

Includes scope 1 direct and scope 2 indirect emissions (Market-based). Reporting criteria differs by airline.

Supplementary notes

Figures have been rounded. Market-based emissions have been used where reported.

*Ryanair figures are for FY 2024 for the year ended March 31, 2024.

Data was compiled by Statista using data provided by the following company reports:

American Airlines Sustainability Report 2023, pg 37.

United Airlines Corporate Responsibility Report, pg 115.

Delta 2023 ESG Report, pg 64.

Lufthansa Sustainability 2023 Fact Sheet, pg 20.

China Southern 2023 Corporate Social Responsibility Report, pg 110.

Air France - KLM 2023 Universal Registration Document, pg 299.

Air China 2023 Corporate Social Responsibility (ESG) Report, pg 66.

Turkish Airlines Sustainability Report 2023, pg 164.

Southwest Airlines One Report 2023, pg 67.

China Eastern Sustainability (ESG) Report 2023, pg 84.

Ryanair Group 2024 Sustainability Report, pg 84.

BA Better World Report 2023.