Global aviation – both passenger flights and freight – emits around one billion tonnes of carbon dioxide (CO2) each year. This was equivalent to around 2.4% of CO2 emissions in 2018.
How do global aviation emissions break down?
The chart gives the answer. This data is sourced from the 2019 International Council on Clean Transportation (ICCT) report on global aviation.1
Most emissions come from passenger flights – in 2018, they accounted for 81% of aviation’s emissions; the remaining 19% came from freight, the transport of goods. Read more…..

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