Two-thirds of European aviation emissions are not priced.

Omissions

• The claim does not mention CORSIA (Carbon Offsetting and Reduction Scheme for International Aviation), the ICAO mechanism that applies to extra-EEA flights. While CORSIA is an offsetting scheme rather than a direct carbon pricing mechanism like the EU ETS, it does represent a form of climate regulation for the flights not covered by the ETS.
• The two-thirds figure originates from a Transport & Environment (T&E) NGO analysis, not from an official EU institution such as the European Commission or the European Environment Agency. No official primary source independently corroborates the exact percentage breakdown.
• The claim was made in a political debate context by a Greens/EFA MEP. The framing of CORSIA as 'not pricing' reflects a political interpretation shared by environmental NGOs rather than a neutral technical assessment.

Sources

• PrimaryEuropean Commission — Climate ActionThe EU, however, decided to temporarily limit the scope of the EU ETS to flights within the EEA, to support the development of a global measure by the International Civil Aviation Organization (ICAO).
• SecondaryTransport & EnvironmentEuropean aviation emissions have returned to pre-pandemic levels, yet the ETS leaves two-thirds of this pollution unpriced. By excluding long-haul flights and with CORSIA failing to deliver effective carbon pricing for extra-European routes.
• SecondaryBusinessGreenEmissions Trading System (ETS) leaves two-thirds of the sector's pollution unpriced. The think tank argued that as things stand, the bloc's carbon market only covers flights within the European Economic Area (EEA).