CORSIA: The global approach to limit emissions

CORSIA (Carbon Offsetting and Reduction Scheme for International Aviation) went into effect in 2021 to tackle aviation’s emissions. Learn how it works.

An illustration of a tree in a circle vaguely like a token. Around the token are abstract star and circle shapes.

For the first time in its history, the aviation sector has a means for buying and trading carbon offsets to meet emissions targets via a framework known as CORSIA.

The impact: 
130 states are committed to CORSIA’s target of limiting international emissions to 85% of 2019 levels.

The takeaway: 
When used to complement and compound other decarbonization strategies, CORSIA could help
cut annual emissions in 2035 by more than 400 million tonnes.

CORSIA creates an aviation offsets market.
In 2019, governments around the world began their commitment to the Carbon Offsetting and Reduction Scheme for International Aviation, known as CORSIA for short.

Through CORSIA, countries aim to keep net emissions from their international air traffic at or below 85% of 2019 levels, and hold that course until 2035.

To make this target possible, the scheme introduced the sector’s first ever global market for purchasing and trading emissions offsets. 

So how does it work?

CORSIA covers direct emissions from international flights.

Almost two-thirds of aviation’s total emissions come from international journeys, so the scheme is well placed to target a large proportion of sector emissions.

A stacked bar chart showing the total emissions by flight type. 573 million tonnes of CO2 came from international flights while 329 million tonnes came from domestic travel.