The CO2 emissions of all domestic and international flights between European airports are covered by the European Emissions Trading System (EU ETS). In addition, preparations are being made for the aviation industry to join the worldwide CORSIA system.

From 2021, the CO2 emissions of international flights between ICAO member states will be covered by this worldwide system and aircraft operators will need to offset any growth in their emissions compared to their emissions in 2019 and 2020. This will require aircraft operators to monitor their emission levels in 2019 and 2020. Read more about this new obligation.