The airline has taken delivery of its first batch of SAF produced by Phillips 66 Limited, with whom it has signed a multi-year deal for future supplies of the fuel.
IAG, BA’s parent company, has already committed to investing $400 million (£305 million) into the development of SAF over the next 20 years.
BA has existing partnerships with several companies to develop SAF plants and purchase the fuel.
The SAF bought by BA will be enough to reduce life-cycle carbon emissions by almost 100,000 tonnes, enough to power 700 net-zero carbon Dreamliner flights between London and New York.