International Civil Aviation Organization’s Net-Zero Goals

ICAO schedules extraordinary meeting to expand council membership

The International Civil Aviation Organization will hold an extraordinary assembly in Montreal on November 19 and 20, 2026. The meeting has one core purpose: to elect four additional member states to the ICAO Council following its expansion from 36 to 40 seats.

The 43rd Session (Extraordinary) of the ICAO Assembly was triggered by the entry into force of the 2016 Protocol amending Article 50(a) of the Convention on International Civil Aviation. That amendment became effective on June 12, 2026. Consequently, all 193 ICAO member states will convene at the organization’s headquarters to vote on the new council positions.

The assembly will run alongside ICAO’s Seventh Worldwide Air Transport Conference. While the election represents the primary procedural mandate, delegates will also discuss urgent topics including CORSIA, carbon emissions, artificial intelligence, and aviation sector innovation.

This administrative meeting takes place against a backdrop of mounting pressure. International aviation contributed approximately 2% of global greenhouse gas emissions in 2022. However, the sector’s emissions are growing faster than those from rail or road transport. Meanwhile, the industry faces a critical deadline: achieving net-zero carbon emissions by 2050.

Council expansion reflects global governance changes

The 2016 Protocol amendment represents a significant shift in how ICAO structures its governing council. By expanding membership from 36 to 40 states, the organization aims to include more diverse national voices in global aviation governance. The amendment required ratification by a specific number of member states before it could take effect.

After years of diplomatic work, the protocol finally crossed the ratification threshold. It entered into force in June 2026. Therefore, ICAO must now convene an extraordinary session to complete the election process. This procedural step ensures the council can function at its new capacity.

The timing is deliberate. By scheduling the assembly for November 2026, ICAO provides sufficient notice for all 193 member states to prepare nominations and voting positions. The two-day format reflects the focused nature of the meeting. Unlike regular assemblies that span multiple weeks and address dozens of agenda items, this extraordinary session has a narrow mandate.

Nevertheless, the assembly creates an opportunity for broader discussions. Delegates will examine how CORSIA operates in practice. They will assess progress on sustainable aviation fuels. They will also consider how emerging technologies might accelerate decarbonization efforts. These conversations happen at a pivotal moment for the industry.

Net-zero commitments clash with emissions trajectory

At the 41st ICAO Assembly in October 2022, member states adopted the Long-Term Global Aspirational Goal of net-zero carbon emissions by 2050. This target aligns with the UNFCCC Paris Agreement’s temperature objectives. It marked the first time the global aviation community formally committed to eliminating net carbon emissions.

However, the gap between aspiration and action remains substantial. The Climate Action Tracker rates ICAO’s current efforts as “highly insufficient.” Without ambitious additional policies, international aviation emissions will more than double between 2024 and 2050. Climate Action Tracker estimates these emissions could reach approximately 1,450 to 1,700 million tonnes of CO2 by mid-century.

CORSIA serves as the primary tool for managing aviation emissions. Member states agreed to this Carbon Offsetting and Reduction Scheme for International Aviation in 2016. The scheme aims to stabilize CO2 emissions at 2020 levels through a phased approach. Phase 1 runs from 2024 to 2026 on a voluntary basis for participating states. Phase 2 becomes mandatory for most states from 2027 to 2035.

Critics argue that offsetting mechanisms do not constitute real emissions reductions. By purchasing carbon credits rather than eliminating emissions at source, the aviation industry risks perpetuating its climate impact. Furthermore, projections suggest emissions could triple by 2050 compared to 2015 levels if current trajectories continue unchanged.

Sustainable aviation fuels represent another key strategy. Industry targets call for SAF to deliver a 5% CO2 reduction by 2030. China is accelerating adoption through subsidies of up to 20%, which reduce costs by approximately 5 to 8%. Despite these efforts, SAF production remains far below the volumes needed to decarbonize the sector comprehensively.

UK businesses face supply chain and compliance pressure

For UK companies, these international aviation developments create both risks and obligations. Businesses that rely on air freight face potential cost increases as airlines pass through carbon compliance expenses. Therefore, procurement teams should review contracts and assess exposure to future fuel surcharges.

Public sector suppliers face specific requirements. Procurement Policy Note 06/21 requires suppliers bidding for central government contracts above £5 million annually to publish carbon reduction plans. These plans must cover Scope 3 emissions, which include business travel and freight transport. Consequently, your aviation emissions now directly affect your ability to win public contracts.

Supply chain transparency becomes more complex as airlines implement CORSIA. Mandatory reporting begins in 2027 for most states. Your logistics providers will need to track and report emissions data with greater precision. This information feeds into your own Scope 3 calculations. Missing or inaccurate data could undermine your carbon reporting compliance.

Tender criteria increasingly emphasize decarbonization commitments. Buyers want evidence that suppliers actively reduce transport emissions rather than simply offsetting them. This shift reflects growing skepticism about carbon credits and offsets. Businesses that demonstrate concrete actions such as mode shifting, route optimization, or SAF adoption gain competitive advantages.

Cost pressures will intensify as CORSIA moves from voluntary to mandatory phases. Airlines operating international routes must purchase offsets for emissions above 2020 baseline levels. These costs will flow through to shippers and passengers. Additionally, SAF currently costs two to four times more than conventional jet fuel. As blending mandates increase, ticket prices and freight rates will rise accordingly.

Insurance and investment considerations also emerge. Investors scrutinize climate risk in business portfolios. Companies with high aviation emissions may face higher capital costs or reduced access to certain funding sources. Similarly, insurers increasingly price climate risk into premiums. Your aviation footprint could affect your overall risk profile.

Critical details for business planning

• The ICAO extraordinary assembly takes place November 19 and 20, 2026, in Montreal to elect four new council members following expansion from 36 to 40 seats.
• Member states committed to net-zero aviation emissions by 2050 at the 41st ICAO Assembly in October 2022, aligning with Paris Agreement temperature goals.
• CORSIA operates in two phases: voluntary participation from 2024 to 2026, then mandatory compliance for most states from 2027 to 2035.
• Current projections indicate international aviation emissions could reach 1,450 to 1,700 million tonnes of CO2 by 2050 without significant policy changes.
• Sustainable aviation fuel targets aim for a 5% CO2 reduction by 2030, but production volumes remain far below required levels for sector-wide decarbonization.
• Climate Action Tracker rates ICAO’s current efforts as highly insufficient, warning that emissions may more than double by 2050 under existing policies.
• UK suppliers to central government must publish carbon reduction plans covering Scope 3 emissions including business travel and freight under PPN 06/21.

Actions UK businesses should consider now

Review your current aviation emissions across all scopes. Business travel typically appears in Scope 3. Air freight may appear in Scope 3 or occasionally Scope 1 depending on operational control. Understanding your baseline helps you identify reduction opportunities and compliance obligations.

Engage logistics providers about their CORSIA compliance strategies. Ask how they will track and report emissions data from 2027 onwards. Request clarity on how offset costs will appear in your invoicing. This conversation should happen well before mandatory reporting begins so you can budget appropriately and avoid surprises.

Consider sustainable aviation fuel options where available. Some airlines now offer SAF blending for specific routes or through corporate programs. While costs currently run higher than conventional fuel, demonstrating early adoption strengthens your sustainability credentials. It also provides experience with what will eventually become standard practice.

Evaluate alternatives to air freight for less time-sensitive shipments. Sea freight generates significantly lower emissions per tonne-kilometer. Rail freight offers another lower-carbon option for suitable routes. Mode shifting reduces both emissions and exposure to aviation sector cost volatility. However, balance these benefits against your operational requirements and customer expectations.

Update carbon reduction plans to address aviation specifically. Generic commitments to reduce travel emissions no longer satisfy scrutiny from buyers and investors. Instead, set measurable targets such as reducing flight frequency by a specific percentage or shifting a defined proportion of shipments to lower-carbon modes. Track progress quarterly and adjust strategies as needed.

Build aviation emissions scenarios into financial planning. Model cost impacts under different carbon price assumptions and SAF blending mandate scenarios. This analysis helps you understand potential budget pressure and identify which business activities face the greatest exposure. It also supports strategic decisions about where to invest in emissions reduction.

If you supply the public sector, our net-zero program provides carbon reporting compliance support specifically designed for PPN 06/21 requirements. Many businesses underestimate the complexity of Scope 3 calculations, particularly for transport emissions. Expert guidance helps you avoid common errors and produce credible, defensible data.

Where to find authoritative guidance

The International Civil Aviation Organization publishes official updates on CORSIA implementation, assembly outcomes, and policy developments. Their website provides technical guidance for airlines and states, though businesses may find the material highly specialized.

For UK-specific requirements, consult guidance on carbon reduction plans from the Cabinet Office. This resource explains PPN 06/21 obligations including how to calculate and report Scope 3 emissions from business travel and freight.

The Institute of Environmental Management and Assessment offers training and resources on corporate carbon accounting. Their materials help businesses understand how to measure transport emissions accurately and integrate aviation data into broader sustainability reporting.

Climate Action Tracker maintains detailed analysis of aviation sector emissions and policy effectiveness. Their assessments provide independent evaluation of whether international commitments align with climate science. This context helps businesses understand the likely trajectory of future regulations.

The SBS Academy delivers practical training on carbon measurement, reduction planning, and compliance requirements for UK businesses. Sessions cover Scope 3 challenges including how to gather reliable data from suppliers and calculate emissions from complex transport arrangements.