South Korea is taking a major step toward decarbonizing its aeronautics sector, publicizing that all transnational breakouts departing from its airfields will be needed to use sustainable aeronautics energy (SAF) starting in 2027. The policy, which positions South Korea among Asia’s first major air transport capitals with a list of SAF blending accreditations, was unveiled as part of the government’s Sustainable Aviation Energy Blending Mandate Roadmap. The action has been concertedly developed by the Ministry of Land, Structure, and Transport (MOLIT) and the Ministry of Trade, Industry, and Energy (MOTIE).

Under the plan, airlines will originally be needed to blend 1 SAF with conventional jet fuel beginning in 2027. The blending rate will gradationally increase to between 7 and 10 by 2035. From 2028, transnational airlines must ensure that at least 90% of their periodic refueling volumes at South Korean airfields meet the SAF demand. Non-compliance could lead to penalties of over 150 of the average request price of SAF, multiplied by the space in energy uptake. Enforcement, still, will be remitted for the first time to allow drivers to acclimate.

The roadmap reflects South Korea’s broader ambition to align its aeronautics sector with global carbon-reduction pretensions and foster domestic SAF product capacity. The move builds upon the SAF Expansion Strategy blazoned last time, which outlined a long-term frame for integrating cleaner energies across the aeronautics value chain. Government officers emphasized that this coordinated policy marks an important corner in Korea’s pathway toward carbon impartiality and enhances its leadership within Asia’s sustainable aeronautics efforts.

South Korea’s approach also supports indigenous cooperation in developing a feasible SAF request across the Asia-Pacific. The country joins Singapore, Japan, and Australia in promoting cleaner aeronautics energies, with the region inclusively representing the world’s largest air trip request. Policy alignment and participant structure are viewed as crucial to spinning up SAF product and distribution.

Energy suppliers, including pollutants and importers, will also be bound by blending scores from 2027. Compliance will be measured according to the proportion of SAF supplied annually for transnational breakouts. The government plans to finalize blending targets for 2030 and 2035 in 2026 and 2029 independently, following reviews of domestic affairs, transnational request trends, and carbon reduction commitments. To grease this transition, South Korea has established a SAF Alliance—a cooperative platform bringing together airlines, pollutants, and controllers to accelerate product, streamline instruments, and harmonize norms.

The policy incorporates both incentives and enforcement mechanisms to encourage early relinquishment. Airlines that surpass the minimal SAF conditions will admit preferential treatment in transnational route allocations, with over 3.5 points added to their air business rights evaluation scores. Meanwhile, drivers will be allowed to postpone up to 20 of their SAF demand for over three times, furnishing inflexibility during the early stages of preparation.

To support airlines facing high SAF costs, the government is also considering direct subventions, which could replace the current field figure reduction program. Between 2025 and 2026, the system is anticipated to save airlines roughly 600 million won (about $428,000), funded primarily by Incheon International Airport Corporation and Korea Airport Corporation. In addition, passengers will be given the option to freely contribute to SAF operation through donations during flight bookings, with airlines offering prices similar to Chesterfield access, upgraded seating, and eco-themed monuments.

Only energies that meet the International Civil Aviation Organization (ICAO) carbon-reduction norms will qualify as SAF under South Korea’s new framework. Eligible energies must achieve at least a 10% reduction in lifecycle emissions compared to the ICAO birth and may include both bio-based and lower-carbon synthetic energies. The government aims to finalize quality norms for bio-aviation energies by mid-2026 and is anticipated to introduce fresh impulses for coming-generation synthetic SAFs made using renewable energy and captured carbon. After 2030, a weighting system could be introduced to award energies that demonstrate advanced carbon reduction rates, promoting invention in domestic refining and feedstock application.

Several South Korean airlines have formally begun experimenting with SAF. Korean Air, the public carrier, lately expanded its use of a 1 SAF mix made from used cooking oil on routes to Kobe and Osaka. The energy, supplied by HD Hyundai Oilbank and GS Caltex, was first tested on the Incheon–Haneda route in 2023. Presently, nine domestic airlines operate limited SAF-blended breakouts, signaling readiness for the broader rollout of the accreditation.

Vice Minister for Transport Kang Hee-up described the SAF accreditation as “Korea’s first step toward achieving carbon impartiality in transnational aeronautics,” emphasizing its part in situating the nation as a global leader in sustainable air transport.

Encyclopedically, South Korea’s move parallels analogous enterprises in Europe and the UK, where authorizations taking 2 SAF blending will take effect in 2025. According to the International Air Transport Association (IATA), global SAF production is projected to double in 2025 but will still account for less than 1% of total airline energy consumption, emphasizing the critical need for large-scale investment and policy alignment.

By embedding SAF conditions into public regulation, Seoul aims to give long-term request stability, attract investment into domestic refining and feedstock processing, and stimulate invention in synthetic energy technologies. However, South Korea’s SAF roadmap could become a model for other Asian husbandry—demonstrating how coordinated policy fabrics and assiduity hookups, if successfully executed, can work.