EU ETS aviation expansion: how much would long haul fares actually rise and how much revenue would it generate?

Extending the EU Emissions Trading System to cover all flights departing the European Economic Area would have only a marginal impact on airfares and passenger demand, according to a new study commissioned by Carbon Market Watch. The study finds that the expansion would generate billions of euros annually for climate action while adding less than one percent to some long haul fares. The current EU ETS aviation scope is limited in geographic reach, and Carbon Market Watch has been among the organisations calling for a broader application.

The research directly addresses one of the central political objections to expanding carbon pricing in aviation: that higher costs would price ordinary travellers out of flying or cause significant demand destruction. By quantifying the fare impact as less than one percent on certain long haul routes, the study provides a concrete data point for policymakers weighing competitiveness concerns against climate revenue generation. The billions of euros the expansion would generate annually represents a significant potential funding stream for climate action programmes across EU member states.

For sustainability and compliance professionals in industries that rely on business travel, an expanded ETS aviation scope would feed directly into Scope 3 category 6 emissions reporting under the GHG Protocol. Companies currently reporting under CSRD and ESRS E1 are required to disclose material Scope 3 emissions, and travel intensive sectors would face both higher direct costs and greater scrutiny of their business travel footprints. Procurement leads managing corporate travel budgets should factor the possibility of expanded aviation carbon costs into medium term planning.

The EU ETS currently faces parallel debates about free permit allocations, with EU policymakers also considering plans to increase the allowance of free permits that businesses can access under the broader ETS framework. The aviation expansion question sits within this wider tension over how aggressively to price carbon across European industries without triggering competitive distortions. How the European Commission responds to the Carbon Market Watch study will indicate the pace at which aviation is brought more fully into carbon market discipline.

European steel producers have separately taken aim at the EU ETS in recent weeks, adding to a broader political conversation about the distribution of carbon costs across industrial sectors. The aviation study's emphasis on minimal consumer impact is partly a strategic intervention in that debate, making the case that carbon pricing can be extended without economic disruption. Compliance teams at companies across affected sectors should watch for any legislative proposals that follow from this research.