Since 2012, the CO2 emissions of all domestic and international flights between European airports have been covered by the EU ETS.
For the 2013-2023 period, the geographic scope of this system is limited to flights within Europe. For the 2017-2023 period, the scope has been governed by Regulation (EU) 2017/2392.
This will create room for the development of a worldwide system due to come into force in 2021 under the auspices of the International Civil Aviation Organisation (ICAO). October 2016 saw the conclusion of an agreement about this worldwide system, dubbed CORSIA (Carbon Offsetting and Reduction Scheme for International Aviation).
The CO2 emissions of all domestic and international flights between European airports are covered by the European Emissions Trading System (EU ETS). Aircraft operators are required to submit an annual report about their CO2 emissions and offset them in full.
In addition to the European EU ETS, preparations are being made for the aviation industry to join the worldwide CORSIA system. This system is designed to allow for the offsetting of the growth in international flight emissions compared to the average for the baseline years 2019-2020. The European Commission will ensure that the CORSIA system complies with European regulations. For now, it remains unclear how CORSIA will relate to the EU ETS. This is a political matter.