What the 2026 ETS Overhaul Means for Airlines
EU Aviation Emissions Reduction:
The Full Auctioning Era Begins
Comprehensive Analysis of EU ETS 2026 Transition, ReFuelEU SAF Mandates & CORSIA Integration
Aviation Climate Policy Intelligence for Industry Stakeholders
1. Executive Summary
The European Union’s aviation sector enters a pivotal regulatory transition in 2026, marking the elimination of free emission allowances under the EU Emissions Trading System and the full implementation of the polluter-pays principle for European aviation.
This Special Report synthesizes intelligence from the European Commission, Eurocontrol, EASA, the International Carbon Action Partnership, and Transport & Environment to provide aviation stakeholders with a comprehensive analysis of the evolving regulatory landscape, cost implications, and strategic considerations for compliance.
From January 1, 2026, aircraft operators must purchase all EU ETS allowances at auction. Free allocation was reduced by 25% in 2024 and 50% in 2025, now reaching zero. With allowance prices fluctuating between €60-80/tonne in 2025 and forecasts suggesting €150/tonne by 2030, airline carbon costs are projected to rise substantially, fundamentally altering the sector’s cost structure.
The EU ETS for aviation currently covers flights within the European Economic Area, plus departing flights to Switzerland and the United Kingdom. However, approximately 70% of emissions from flights departing European airports remain outside carbon pricing due to the restricted scope, representing a significant policy gap that may be addressed following the Commission’s July 2026 CORSIA assessment.
Concurrently, the ReFuelEU Aviation regulation mandates minimum sustainable aviation fuel blending from 2025, while the EU ETS allocates 20 million allowances (valued at approximately €1.5 billion) to support SAF price differentials through 2030. These interlocking policies represent the EU’s multi-instrument approach to aviation decarbonization within the Fit for 55 framework.
Sources: European Commission Climate Action, EUR-Lex EU ETS Summary, EASA, Eurocontrol, Transport & Environment
2. ETS Free Allocation Phase-Out Schedule
The 2023 revision of the EU ETS Directive accelerated the phase-out of free allowances for the aviation sector, implementing the transition one year ahead of the original Commission proposal. This timeline reflects the European Parliament’s successful negotiation for faster adoption of the polluter-pays principle.
Free Allocation Reduction Timeline
Compliance Alert: The free allocation for 2024 and 2025 was distributed among aircraft operators proportionately to their 2023 verified emissions. From 2026, operators must secure 100% of allowances through auction purchases or secondary market trading.
| Year | Free Allocation | Auction Requirement | Key Provisions |
|---|---|---|---|
| 2023 | ~82% | ~18% | Historical baseline for 2024-2025 distribution |
| 2024 | ~64% | ~36% | 25% reduction; distribution based on 2023 verified emissions |
| 2025 | ~43% | ~57% | 50% reduction; maritime transport added to ETS |
| 2026+ | 0% | 100% | Full auctioning; SAF allowances remain (20M through 2030) |
Sources: European Commission Climate Action, EASA EU ETS Guidance, International Carbon Action Partnership
3. EU ETS Carbon Price Analysis & Forecast
EU ETS allowance prices have demonstrated significant volatility since the 2023 reforms, reaching a record high of €100.34 per tonne in February 2023 before moderating. The 2025 price environment shows fluctuations between €60-80/tonne, with structural factors supporting long-term price increases.
Historical Price Trajectory & Projections
Market Outlook: Future markets signal modest ETS price increases through 2027. The REPowerEU programme, selling approximately 250 million allowances between 2023-2026 to fund the EU’s energy transition, concludes in 2026. Many analysts expect this supply reduction to drive a steep rally in EUA prices thereafter.
Price Drivers
| Factor | Direction | Impact Assessment |
|---|---|---|
| Aviation free allocation phase-out | ▲ Upward | Airlines entering auction market as buyers increases demand |
| Maritime transport inclusion (2024) | ▲ Upward | Shipping companies now requiring allowances |
| REPowerEU ending (2026) | ▲ Upward | Auction supply drops sharply when programme concludes |
| Cap reduction (-4.3%/year) | ▲ Upward | Decreasing supply of allowances by 4.3% annually until 2028, then 4.4% |
| Power sector decarbonization | ▼ Downward | 11% emission reduction in 2024 reduces demand from utilities |
| Economic conditions | ◆ Variable | Industrial activity levels affect overall allowance demand |
Sources: BloombergNEF EU ETS Outlook, Statista, European Commission Carbon Market Report 2025, CZ Carbon Analysis
4. ETS Revenue & Climate Funding
EU ETS auction revenues have become a critical funding source for the European climate transition, with total revenues exceeding €250 billion since the system’s inception. The 2024 auction year generated €38.8 billion, distributed across Member States, the Innovation Fund, Modernisation Fund, and Recovery and Resilience Facility.
Aviation-Specific Funding Allocations
| Mechanism | Amount | Purpose | Timeline |
|---|---|---|---|
| SAF Allowances | 20 million EUAs | Price gap support for SAF uplift | 2024-2030 |
| Innovation Fund (Aviation) | 5 million EUAs | Low-carbon aviation technologies, electrification | 2024-2030 |
| SAF Price Support (2024) | ~€125 million | Combined allowance allocation + zero-rating benefit | 2024 |
SAF Incentive Structure: The ETS SAF support mechanism rewards fuels in tiers based on emissions intensity. Renewable fuels of non-biological origin (e-fuels) receive 95% of the price differential, advanced biofuels 70%, and other eligible SAF 50%. This prioritizes nascent technologies with highest decarbonization potential.
Sources: European Commission Carbon Market Report 2025, EUR-Lex EU ETS Summary, Climate Catalyst SAF Policy Analysis
5. European Aviation Emissions Profile
European aviation emissions continue their post-pandemic recovery trajectory, with 2024 data indicating near-complete restoration to pre-COVID levels. According to Transport & Environment analysis, 8.4 million flights departed from European airports in 2024, generating 187.6 million tonnes of CO₂—representing 96% of 2019 flight numbers and 98% of emissions.
Year-over-Year Emissions Trajectory
Top 10 Emitting Airlines (2024)
| # | Airline | CO₂ Emissions | YoY Change | Notes |
|---|---|---|---|---|
| 1 | Ryanair | ~16Mt | +9% | Top emitter 3rd consecutive year |
| 2 | Lufthansa | ~12Mt | +5% | Leading legacy carrier |
| 3 | British Airways | ~9Mt | +4% | Long-haul focus |
| 4 | Air France | 8.2Mt | -1% | Only top-10 decline |
| 5 | easyJet | ~7Mt | +6% | LCC expansion |
| 6 | Emirates | ~6Mt | +7% | Extra-EU routes |
| 7 | KLM | ~5Mt | +3% | Network carrier |
| 8 | Wizz Air | ~5Mt | +8% | Fastest ULCC growth since 2019 |
| 9 | Iberia | ~4Mt | +10% | Highest YoY increase |
| 10 | United Airlines | ~4Mt | +2% | Transatlantic focus |
Coverage Gap: Airlines were spared from paying for approximately 70% of their 2024 pollution due to scope exemptions. The highest-emitting routes (e.g., London-New York, London-Dubai) are all intercontinental and fall outside ETS coverage, generating over 1.4Mt CO₂ annually on the London-New York route alone.
Sources: Transport & Environment EU Aviation 2024 Report, Eurocontrol Aviation Long-Term Outlook, Euronews Green
6. ETS Geographic Scope & CORSIA Integration
The EU ETS maintains a restricted geographic scope for aviation, covering intra-EEA flights and departing flights to Switzerland and the United Kingdom. International flights to and from third countries fall under the Carbon Offsetting and Reduction Scheme for International Aviation (CORSIA), creating a dual regulatory framework with significant differences in stringency and cost.
Coverage Distribution
EU ETS vs. CORSIA: Key Differences
| Dimension | EU ETS | CORSIA |
|---|---|---|
| Mechanism | Cap-and-trade with declining cap | Offset-based (carbon neutral growth) |
| Price Level | €60-80/tonne (2025) | €7-15/tonne (estimated) |
| Ambition | -62% by 2030 vs. 2005 | Carbon neutral growth from 2020 baseline |
| Scope | Intra-EEA + CH/UK departures | International flights (volunteering states) |
| Free Allowances | Zero from 2026 | N/A (offset purchase) |
| SAF Treatment | Zero-rated + price support | Creditable toward offset obligations |
The European Commission must report by July 1, 2026 on CORSIA’s environmental integrity relative to Paris Agreement goals. If fewer than 70% of states participate or if CORSIA proves insufficiently robust, the Commission must propose extending EU ETS scope to all departing flights from the EEA. Flights to non-participating states will automatically fall under ETS from 2027.
Transport & Environment estimates that extending EU and UK ETS coverage to all extra-European departing emissions would have generated an additional €7.5 billion in 2024, funding that could support SAF development, electric aircraft research, and hydrogen aviation technologies.
Sources: European Commission Climate Action, Carbon Market Watch EU ETS FAQ, EUR-Lex, EASA Market-Based Measures
7. ReFuelEU Aviation: SAF Mandate Framework
The ReFuelEU Aviation regulation, which entered into force in January 2025, establishes progressive sustainable aviation fuel blending mandates for fuel suppliers at EU airports. The regulation represents the EU’s primary instrument for driving SAF market development and ensuring long-term scalability of cleaner aviation fuels.
SAF Blending Mandate Timeline
Synthetic Fuel (e-SAF) Sub-Mandate
| Year | Total SAF Mandate | e-SAF Sub-Mandate | e-SAF Share of SAF |
|---|---|---|---|
| 2030 | 6% | 1.2% | 20% |
| 2035 | 20% | 5% | 25% |
| 2040 | 34% | 10% | 29% |
| 2050 | 70% | 35% | 50% |
2024 Market Reality: SAF production represented only 0.53% of global jet fuel use in 2024. Almost all SAF used was biofuel, produced primarily from used cooking oil (81%) and waste animal fats (17%). Synthetic e-fuel development remains in early stages. Production capacity under construction could supply the 3.2Mt required under ReFuelEU in 2030, but rapid scale-up is essential.
SAF Price Differential (2024 Reference)
SAF currently costs 3-10 times more than conventional jet fuel, with synthetic e-fuels representing the most expensive but highest-potential pathway. The EU’s Sustainable Transport Investment Plan (November 2025) aims to mobilize €2.9 billion to support aviation e-fuel projects through 2027, addressing the market failure preventing final investment decisions for production facilities.
Sources: EASA SAF Report, European Commission ReFuelEU Aviation, Climate Catalyst EU SAF Policy, Transport.ec.europa.eu
8. Non-CO₂ Aviation Effects: Monitoring Framework
The 2023 EU ETS revision established the first regulatory framework for addressing aviation’s non-CO₂ climate impacts, including nitrogen oxides, sulfur dioxide, soot particles, and contrail formation. Aircraft operators began mandatory monitoring of non-CO₂ effects from January 1, 2025, with annual reporting requirements.
Implementation Timeline
| 2025 | MRV system begins (monitoring starts) |
| 2026 | First annual reports submitted |
| 2027 | Commission evaluation of MRV results |
| 2028 | Legislative proposal for non-CO₂ inclusion |
Non-CO₂ Impact Factors
| Contrails | Ice crystal formations, radiative forcing |
| NOx | Ozone formation at altitude |
| Soot/PM | Contrail formation nuclei |
| Water Vapor | Stratospheric effects |
Scientific Context: Non-CO₂ effects may double or triple aviation’s total climate impact compared to CO₂ alone. The Aviation Non-CO₂ Expert Network (ANCEN), launched in 2024, provides technical support for policy development. A European Parliament pilot project is exploring fuel composition optimization (lower aromatics, sulfur) to reduce non-CO₂ impacts.
Sources: European Commission Climate Action, EASA European Aviation Environmental Report 2025
9. Long-Term Outlook: Pathway to Net Zero 2050
Eurocontrol’s Aviation Long-Term Outlook to 2050 projects European flight growth despite climate policy constraints, with the base scenario anticipating 11.8 million annual flights by 2050—approximately 41% above 2023 levels. Achieving net-zero by 2050 requires successful decoupling of traffic growth from emissions through technology, operations, and SAF deployment.
Flight Growth Scenarios (ECAC Region)
| Scenario | 2023 (Baseline) | 2030 | 2040 | 2050 |
|---|---|---|---|---|
| Low | 8.35M | ~8.7M | ~9.0M | 9.4M |
| Base | 8.35M | ~9.3M | ~10.5M | 11.8M |
| High | 8.35M | ~9.8M | ~11.8M | 13.8M |
Decarbonization Pathway Components
In October 2022, ICAO’s 193 member states adopted a collective long-term aspirational goal of net-zero carbon emissions from international aviation by 2050. Achievement depends on SAF scale-up, operational efficiency, and technological innovation. The EU’s regulatory framework—combining ETS carbon pricing, ReFuelEU mandates, and Innovation Fund support—represents the world’s most comprehensive aviation decarbonization approach.
Sources: Eurocontrol Aviation Long-Term Outlook 2050, European Aviation Environmental Report 2025, EASA, IEA Aviation
10. Strategic Implications by Stakeholder
| Stakeholder | Key Implications | Recommended Actions |
|---|---|---|
| Aircraft Operators | Full carbon cost exposure from 2026; SAF uptake requirements; non-CO₂ reporting obligations | Develop EUA hedging strategies; secure SAF offtake agreements; invest in fleet efficiency |
| Fuel Suppliers | Mandatory SAF blending targets; infrastructure requirements; compliance penalties | Scale SAF production capacity; establish EU airport distribution; explore e-SAF partnerships |
| Airports | SAF infrastructure obligations (storage, blending); tankering prevention monitoring | Invest in blending facilities; coordinate with fuel suppliers; pursue net-zero targets |
| Investors | Carbon cost materiality increasing; SAF infrastructure opportunity; technology transition | Incorporate carbon pricing in airline valuations; evaluate SAF production investments |
| Regulators | CORSIA assessment deadline July 2026; non-CO₂ framework development; enforcement | Prepare scope extension proposals; harmonize Member State penalties; monitor compliance |
11. Data Sources & Methodology
This report synthesizes intelligence from multiple authoritative sources to provide a comprehensive assessment of EU aviation climate policy and emissions trading developments.
| Source | Type | Coverage | Quality Assessment |
|---|---|---|---|
| European Commission Climate Action | Official Policy | EU ETS, ReFuelEU | High – Authoritative |
| EUR-Lex | Legal Framework | EU Legislation | High – Primary source |
| EASA | Technical/Regulatory | Aviation Safety & Environment | High – Authoritative |
| Eurocontrol | Operational Data | European ATM | High – Authoritative |
| Transport & Environment | Analysis/Advocacy | Emissions Data | Medium-High – Independent research |
| International Carbon Action Partnership | Market Analysis | Carbon Markets | High – Specialized |
| BloombergNEF / Statista | Market Data | Price Forecasts | High – Industry standard |
| Carbon Market Watch | Policy Analysis | ETS Monitoring | Medium-High – NGO research |
| OAG Schedules Analyser | Schedule Data | Global | High – Industry Standard |
| IATA Economics | Industry Association | Global (360+ airlines) | High – Authoritative |
| FAA | Regulatory Body | North America | High – Official |
| Cirium | Aviation Analytics | Global | High – Industry Standard |
| CAPA Centre for Aviation | Industry Analysis | Global | High – Analytical |
| Airports Council Int’l | Industry Association | Global Airports | High – Authoritative |
Confidence Level: HIGH – This report synthesizes official EU policy documents, authoritative aviation regulatory sources, and established market data providers. All statistics are cross-referenced against multiple sources where available. Emissions data relies on verified reporting under EU ETS monitoring requirements and third-party analysis.
Report Generated: 2026-01-03 | Multi-source verified | Produced by Aviantics Labs
This article was produced in accordance with our editorial standards. Aviantics maintains strict editorial independence.
