Qantas will use a plant oil biofuel to help power its Los Angeles-based aircraft.
The airline will buy 30 million litres of renewable jet fuel each year from United States based bio-energy company SG Preston - and will start using the biofuel from 2020.
The fuel will be used by Qantas aircraft from Los Angeles to Australia and follows a
successful domestic biofuel trial flights in 2012.
The fuel consists of 50 per cent renewable jet fuel produced from non-food plant oils, blended with 50 per cent traditional jet fuel.
In 2012 Qantas and Jetstar operated Australia's first biofuel trial flight on domestic flights using biofuel derived from used cooking oil, split with conventional jet fuel.