KLM Cityhopper operated the first commercial passenger flight to Germany utilizing a 5 percent blend of synthetic kerosene on June 8, 2026, demonstrating the technical viability of power-to-liquid fuels while exposing severe supply constraints ahead of upcoming European mandates.

The flight traveled from Amsterdam Airport Schiphol (AMS) to Hamburg Airport (HAM). According to a press release issued by KLM Royal Dutch Airlines, the operation was a collaborative effort involving synthetic fuel producer INERATEC, blending partner MB Energy, and the destination Airports.

Advancing power-to-liquid aviation fuels

The aircraft was refueled at Schiphol with 200 liters of synthetic kerosene, commonly referred to as e-SAF. This volume constituted a 5 percent blend with conventional fossil kerosene. INERATEC manufactured the synthetic fuel, while MB Energy managed the blending process prior to refueling.

Synthetic kerosene offers a potential lifecycle emissions reduction of more than 90 percent compared to traditional fossil fuels. The power-to-liquid process utilizes renewable electricity to combine hydrogen and captured carbon dioxide into a drop-in aviation fuel.

INERATEC Co-founder and CEO Tim Boeltken emphasized the immediate readiness of the technology following the successful operation.

“We are ready to deliver. Today’s flight, with our Chief Commercial Officer Maximilian Backhaus on board during a regular passenger service, clearly shows that power-to-liquid fuels are safe, available, and already operationally viable today. This is just the beginning of many applications we will see this year across various sectors,” Boeltken stated.

Scaling challenges and European mandates

While the Hamburg flight proved the operational concept, KLM used the milestone to highlight the stark economic and logistical hurdles facing the industry. The European Union has established a sub-target mandate requiring a 1.2 percent e-SAF blend across the aviation sector by 2030.

Currently, synthetic kerosene production remains highly constrained. The financial barriers are equally significant. KLM reported that e-SAF currently costs four times as much as standard Sustainable Aviation Fuel (SAF) and eight times as much as conventional fossil kerosene.

KLM Royal Dutch Airlines CEO Marjan Rintel, who also chairs Project SkyPower, noted the discrepancy between regulatory goals and industrial reality.

“As CEO of KLM and chair of Project SkyPower, I believe e-SAF can make a real difference in making aviation more sustainable. KLM already pioneered a passenger flight on e-SAF in 2021, from Amsterdam to Madrid. Today’s flight to Hamburg once again shows that flying on synthetic kerosene is technically possible. But the reality is that the availability of e-SAF lags far behind ambition,” Rintel said.

AirPro News analysis

The most telling metric from the June 8 operation is not the successful flight itself, but the volume of synthetic fuel utilized. In 2021, KLM pioneered its first commercial e-SAF flight from Amsterdam to Madrid using 500 liters of synthetic kerosene. Five years later, the Hamburg flight utilized only 200 liters.

This 60 percent reduction in available test volume over a half-decade underscores the severe scalability crisis facing power-to-liquid fuels. We view the 2030 European Union mandate of a 1.2 percent e-SAF blend as highly vulnerable to supply chain realities. If a major flag carrier like KLM is explicitly highlighting the fact that current production is only a fraction of what is required, regulators may eventually be forced to reevaluate the timeline or heavily subsidize production to bridge the eight-fold cost gap with fossil fuels.

Sources: KLM Royal Dutch Airlines

American Airlines Group Inc. (AAL) and Google have signed an agreement to purchase 35 million gallons of sustainable aviation fuel certificates over the next three years, marking the largest publicly announced transaction of its kind between an Airlines and a single corporate customer.

Announced on June 9, 2026, the partnership will facilitate the delivery of physical sustainable aviation fuel (SAF) to Chicago O’Hare International Airport (ORD) via Valero Marketing and Supply Company. The agreement is projected to reduce greenhouse gas emissions by nearly 300,000 metric tons of carbon dioxide equivalent (CO2e), allowing Google to offset the environmental impact of its employee business travel.

Scaling sustainable aviation fuel

The sustainable aviation fuel certificates (SAFc) model allows corporate customers to claim the environmental benefits of the fuel even if they do not physically consume it on their specific flights. Google will utilize the SAFc Registry to apply these emissions reductions against its corporate travel footprint.

“This strategic collaboration with American Airlines demonstrates how companies can work together to scale critical sustainability technologies. By entering into this long-term commitment, we are sending a vital demand signal to catalyze investment and bring more SAF to market,” said Kate Brandt, Chief Sustainability Officer at Google.

American Airlines stated the agreement is a critical step in reducing operational emissions and growing market demand for SAF. According to the airline, the aviation industry currently accounts for 2 to 3 percent of global carbon dioxide emissions. Google noted that SAF has the potential to reduce air travel emissions by up to 80 percent compared to traditional jet fuel.

Legislative incentives and prior collaborations

The transaction was facilitated by a recently enacted sustainable aviation fuel tax credit passed by the Illinois General Assembly. The legislation is designed to incentivize the delivery and utilization of SAF within the state.

“This agreement demonstrates how our nation-leading SAF tax credit can bring industry leaders together as we work toward a more sustainable future. Through partnerships with innovators like American Airlines and Google, we’re strengthening Illinois’ role as a global aviation hub and accelerating the transition to cleaner energy,” said Illinois Governor JB Pritzker.

This SAFc agreement follows a 16-week pilot program conducted by American Airlines and Google in 2025. That initiative, which also included Flightkeys and Contrails.org, embedded contrail avoidance models into flight planning and reportedly achieved a 62 percent reduction in contrail formation.

AirPro News analysis

We view this 35-million-gallon agreement as a significant indicator of how corporate sustainability budgets are increasingly subsidizing the premium cost of SAF. While 35 million gallons over three years represents a fraction of American Airlines’ total annual fuel consumption, long-term offtake agreements are essential for producers like Valero to secure financing for expanded refining capacity. The use of the SAFc Registry also highlights the growing maturation of the book-and-claim model, which decouples the environmental attributes of SAF from the physical fuel, solving logistical bottlenecks at airports that lack the infrastructure to receive blended SAF directly.

Sources: American Airlines

This article is based on an official press release from ICAO.

ICAO and IATA Deepen Cooperation to Boost Sustainable Aviation Fuel Tracking

On June 2, 2026, the International Air Transport Association (IATA) and the International Civil Aviation Organization (ICAO) announced an enhanced partnership during the ICAO Aviation Climate Week in Montreal. According to an official press release from ICAO, the collaboration is designed to advance transparency and integrity in tracking the progress, development, and deployment of SAF.

The global aviation sector has formally committed to achieving net-zero carbon emissions by 2050. Industry estimates indicate that SAF is the most significant decarbonization lever currently available, expected to account for up to 65 percent of the total carbon mitigation required to reach this mid-century target. The joint announcement underscores that close collaboration between industry and states, supported by high-quality data, is essential for credible tracking of cleaner aviation energies.

This strategic alignment was unveiled during the “One Global Path: Advancing Net-Zero Aviation” conference, which serves as a global platform for aviation leaders to monitor progress on the ICAO Global Framework for SAF. By integrating robust tracking systems, both organizations aim to ensure that climate investments are recognized consistently across international regulatory frameworks.

Enhancing Transparency and Global Tracking

The Role of the CADO SAF Registry

A central component of this enhanced tracking initiative involves the evaluation of existing fuel accounting systems. According to supplementary industry research, IATA and ICAO will explore how platforms like the SAF Registry can support international reporting. Launched in March 2025 and now managed by the independent, Montreal-based Civil Aviation Decarbonization Organization (CADO), the registry is designed to record SAF transactions accurately and transparently.

Because physical SAF supply is not yet available at all geographical locations, the registry utilizes a “Book and Claim” approach. This system decouples the physical fuel from its environmental attributes, allowing airlines and corporate customers to claim the environmental benefits of SAF without physically loading it into their specific aircraft. This methodology is critical for preventing double-counting and ensuring immutable tracking of emissions reductions.

Aligning with ICAO Frameworks

The press release notes that the organizations agreed to explore how SAF registries and their collected data can support the implementation of ICAO’s Long-Term Aspirational Goal (LTAG) Monitoring and Reporting (LMR) methodology. Furthermore, the data collected through these robust systems helps airlines meet international regulatory obligations, such as ICAO’s Carbon Offsetting and Reduction Scheme for International Aviation (CORSIA), by providing verifiable emissions reduction data to state authorities.

Industry Leadership Perspectives

Leadership from both organizations emphasized the necessity of verifiable data to build trust and accelerate the transition away from conventional jet fuel. In the official release, IATA Director General Willie Walsh highlighted the importance of accurate measurement:

“Credible tracking is necessary to know the emissions reductions delivered by SAF. The data collected by the CADO SAF Registry, among others, has the potential to meet this need. By working with ICAO to strengthen how progress on SAF use is measured and reported, we can accelerate deployment, build trust across stakeholders, and put aviation on track for net zero by 2050. This will set a great example for individual states to work with industry to make the most of the SAF data that is being accumulated.”

Willie Walsh, IATA Director General

Echoing this sentiment, ICAO Secretary General Juan Carlos Salazar pointed to the unprecedented level of coordination required to meet the industry’s mid-century climate goals:

“Achieving ICAO’s vision of net zero carbon emissions from international aviation by 2050 will require unprecedented levels of transparency and cooperation across the entire sector. This agreement will support the strengthening of ICAO’s leadership as we support States and industry in their scaling up of sustainable aviation fuels and other aviation cleaner energies.”

Juan Carlos Salazar, ICAO Secretary General

Overcoming Supply Challenges and Market Implications

Current Production Realities

Despite the critical role of SAF in decarbonizing air travel, production volumes have historically lagged behind demand. According to industry data, SAF accounted for just 0.3 percent of global jet fuel production at the end of 2024. Scaling up production remains the primary bottleneck for the Commercial-Aircraft sector, making the efficient allocation and tracking of existing supplies paramount.

To build trust and ensure impartial governance over these limited supplies, IATA spun off the management of the SAF Registry to CADO in early 2025. CADO’s inclusive structure allows participation from governments, fuel producers, airlines, and corporate customers, fostering a harmonized global market.

AirPro News analysis

We view the deepening cooperation between ICAO and IATA as a necessary maturation of the SAF market. By standardizing how environmental attributes are tracked and claimed, this partnership helps create a liquid, global market for sustainable fuels. This standardization provides certainty to airlines that their environmental claims are valid, and assures producers that they can accurately account for deliveries. Ultimately, a unified, credible tracking system mitigates the risk of greenwashing, ensuring that corporate Scope 3 emissions reporting and airline compliance claims are backed by immutable, verified data. This regulatory certainty is exactly what investors need to fund the massive scale-up in SAF production facilities required over the next two decades.

Frequently Asked Questions (FAQ)

What is the CADO SAF Registry?

The CADO SAF Registry is an independent platform launched in March 2025 to accurately and transparently record Sustainable Aviation Fuel transactions. It is managed by the Civil Aviation Decarbonization Organization, a Montreal-based non-profit.

What is the “Book and Claim” approach?

The “Book and Claim” system allows airlines and corporate customers to purchase the environmental benefits of SAF even if the physical fuel is not available at their specific departure airport. The physical fuel is used elsewhere in the aviation system, but the environmental credit is securely tracked and claimed by the purchaser, preventing double-counting.

Why is SAF critical for aviation’s net-zero goals?

Sustainable Aviation Fuel is considered the most viable near-term solution for reducing aviation emissions, as it can be used in existing aircraft engines. Industry projections estimate that SAF will need to provide up to 65 percent of the carbon mitigation required for the aviation sector to reach net-zero emissions by 2050.

Sources: ICAO