Hawaiian Airlines announced it will be incorporating sustainable aviation fuel (SAF) on flights between Osaka, Japan, and Honolulu under a sales agreement between parent company Alaska Air Group and Cosmo Oil Marketing Co., a subsidiary of Cosmo Energy Holdings Co. Fuel deliveries have begun at Kansai International Airport in Osaka, marking the first time Hawaiian Airlines has introduced SAF — which, according to the announcement, can lower life-cycle carbon emissions by up to 80% compared with traditional jet fuel.

Alanna James, sustainability innovation director at Hawaiian Airlines, said, “Japan is an important international market for Hawaiian Airlines, and we appreciate Cosmo’s investment in locally sourced SAF — the most effective technology to lower our carbon emissions — that we are now using on our flights between Osaka and Honolulu.”

The Cosmo Energy Group, according to the announcement, has worked to establish a supply chain to deliver Japan’s first locally made SAF, with the goal of achieving net zero carbon emissions by 2050. The group is also helping build social momentum through initiatives such as an ongoing pilot program to collect household used cooking oil at service stations for repurposing into SAF feedstock.