Airline CEOs warn EU plan to expand carbon costs will raise fares

The European Union's proposed extension of its Emissions Trading System (ETS) to cover international flights has sparked significant concern among global airlines, including those operating from Africa. This move, part of the EU's broader climate agenda, is anticipated to substantially increase operational costs for carriers, leading to higher airfares for passengers. While the EU aims to bolster its climate action, the initiative risks creating a complex regulatory landscape, potentially conflicting with the International Civil Aviation Organization's (ICAO) global Carbon Offsetting and Reduction Scheme for International Aviation (CORSIA). For African airlines and economies, the unilateral extension of the EU ETS could impose disproportionate financial burdens, impacting connectivity and economic development, and reigniting past international disputes over extraterritorial jurisdiction.

The European Union is poised to expand the reach of its Emissions Trading System (ETS) to encompass international flights, a development that has sent ripples of apprehension through the global aviation industry. This proposed extension, a key component of the EU's ambitious "Fit for 55" climate package, seeks to intensify efforts to decarbonise the aviation sector by imposing a direct cost on carbon emissions from flights departing European airspace. Airline chief executives have vociferously warned that such a measure would inevitably translate into increased ticket prices, a concern amplified for long-haul routes and for carriers operating from regions like Africa, where economic sensitivities to travel costs are pronounced.

The implications of this policy shift extend far beyond mere operational adjustments for airlines. It raises fundamental questions about international legal jurisdiction, the efficacy of unilateral climate policies versus global harmonisation, and the equitable distribution of climate action burdens. For practicing attorneys and legal professionals, particularly those advising airlines, aviation service providers, or governments in non-EU states such as Ghana, understanding the intricate legal and economic ramifications of this EU initiative is paramount. This article will delve into the statutory framework, historical context, and potential conflicts arising from the EU's proposed ETS expansion, offering insights into the challenges and strategic considerations for affected stakeholders.

The core thesis is that while the EU's climate ambition is clear, its unilateral extension of the ETS to international flights presents significant legal and economic challenges, particularly for African aviation, by potentially undermining global consensus mechanisms and imposing substantial financial burdens that could stifle growth and connectivity.

The EU Emissions Trading System (ETS), established by Directive 2003/87/EC, serves as the cornerstone of the European Union's policy to combat climate change by reducing greenhouse gas emissions through a cap-and-trade mechanism. Initially focused on energy-intensive industrial installations, the ETS was extended to include aviation activities from January 1, 2012, under Directive 2008/101/EC. This initial inclusion covered all flights arriving at or departing from aerodromes situated within the European Economic Area (EEA).

However, the application of the EU ETS to flights entering or exiting the EEA faced strong international opposition, with several non-EU countries, including the United States, China, India, and Brazil, threatening retaliatory measures and legal challenges, citing concerns over extraterritorial jurisdiction. In response to this backlash, the EU temporarily limited the scope of the ETS to intra-EEA flights through a mechanism often referred to as "stop the clock," allowing time for the International Civil Aviation Organization (ICAO) to develop a global market-based measure. This led to the adoption of the Carbon Offsetting and Reduction Scheme for International Aviation (CORSIA) by ICAO in 2016, which aims to stabilise CO2 emissions from international aviation at 2020 levels through an offsetting scheme.

The current restriction of the EU ETS geographical scope to intra-EEA flights was extended until the start of 2027 by the 2023 revision of the EU ETS aviation rules (Directive (EU) 2023/958). This directive mandates the European Commission to conduct an assessment by July 2026 to evaluate the environmental integrity and global participation level of CORSIA. Depending on the outcome of this assessment, the Commission is empowered to make a legislative proposal that could extend the scope of EU emissions trading to include departing flights from the EEA to states not sufficiently implementing CORSIA, or to maintain the intra-European scope if CORSIA is strengthened. Furthermore, free allocation of allowances to aircraft operators under the EU ETS is being progressively phased out, moving to full auctioning from 2026, which will further increase costs for airlines.

The proposed extension of the EU ETS to international flights presents a complex interplay of international law, economic policy, and environmental objectives. Legally, the European Court of Justice (ECJ) has previously affirmed the EU's competence to include international aviation in its ETS, ruling that such measures conform with international law, including principles of state sovereignty under the Chicago Convention of 1944. The Court reasoned that aircraft operating within the territory of an EU Member State are subject to the jurisdiction of that Member State and the European Union. However, the extraterritorial application of the ETS, covering portions of flights over non-EU airspace, has historically been a point of contention, leading to diplomatic disputes and threats of trade wars.

A key point of friction lies in the differing approaches of the EU ETS and ICAO's CORSIA. The EU ETS is a cap-and-trade system that directly prices carbon emissions, with allowances increasingly acquired through auctioning, leading to a higher carbon price (e.g., €70+ per tonne in 2025). In contrast, CORSIA is primarily an offsetting scheme, requiring airlines to purchase carbon credits to compensate for emissions growth above a baseline, with a significantly lower carbon price (e.g., ~€3.20 per tonne in 2022). Critics argue that CORSIA's reliance on offsets, its voluntary initial phases, and its less ambitious targets make it less effective in driving actual emissions reductions within the aviation sector compared to the EU ETS.

The potential for "double regulation" is a significant concern. While Directive (EU) 2023/958 explicitly contemplates the possibility of both CORSIA and an extended EU ETS applying to the same flight routes, it also provides for mechanisms to allow aircraft operators to deduct costs incurred from CORSIA offsetting to avoid "double charging." However, the administrative burden and the disparity in carbon prices between the two schemes could still create significant compliance complexities and financial exposure for airlines. For African airlines, many of which operate on thin margins, the increased cost burden from the EU ETS, especially with the phasing out of free allowances, could be substantial.

African aviation bodies, such as the African Airlines Association (AFRAA), have historically expressed strong reservations about the EU ETS, advocating for a global, harmonised approach under ICAO. The imposition of additional carbon costs by the EU could disproportionately affect African carriers, potentially increasing ticket prices for crucial routes to Europe and hindering the growth of the continent's aviation sector. This raises questions about the principle of "common but differentiated responsibilities" in climate action, where developing nations argue for flexibility to pursue economic development. The EU's stance, however, is driven by its commitment to the Paris Agreement goals and the belief that all sectors must contribute fairly to emission reductions.

Furthermore, the EU's "Fit for 55" package also includes the ReFuelEU Aviation regulation, which mandates the blending of Sustainable Aviation Fuels (SAF) for flights departing EU airports, starting at 2% in 2025 and increasing significantly thereafter. This, combined with the ETS extension, creates a dual cost pressure on airlines, particularly those from Africa, who may face challenges in accessing SAF or absorbing the associated higher fuel costs. The cumulative effect of these measures could place African airlines at a competitive disadvantage, potentially impacting their ability to operate economically viable routes to and from Europe.

The European Union's impending decision to potentially extend its Emissions Trading System to international flights marks a critical juncture for global aviation, particularly for African carriers and consumers. While driven by a commendable commitment to climate action, this unilateral approach risks creating significant legal and economic friction with non-EU states and the global aviation framework established by ICAO's CORSIA. The substantial increase in operational costs, stemming from the direct carbon pricing of the EU ETS and the phasing out of free allowances, is highly likely to translate into higher airfares, impacting travel affordability and connectivity, especially for developing economies.

For legal practitioners, the evolving landscape necessitates a deep understanding of both EU climate law, particularly Directive 2003/87/EC as amended by Directive (EU) 2023/958, and international aviation law, including the Chicago Convention and CORSIA. Airlines and their legal counsel must prepare for complex compliance requirements, potential "double charging" scenarios (even with deduction mechanisms), and the strategic implications of increased operating expenses. Governments in affected regions, such as Ghana, should continue to engage in diplomatic efforts to advocate for globally harmonised, equitable solutions that consider the unique developmental contexts of their aviation sectors. The coming months, leading up to the European Commission's assessment in July 2026, will be crucial in shaping the future of international aviation's climate responsibilities and its economic viability.