Home Airlines Green Tiers: Qantas expands use of 80% less emission sustainable aviation fuel Green Tiers: Qantas expands use of 80% less emission sustainable aviation fuel 15 Mar 2022 | AirlinesNewsSustainable Aviation Fuel Green Tiers: Qantas expands use of 80% less emission sustainable aviation fuel Qantas will expand its use of sustainable aviation fuel to help reduce carbon emissions on its flights from LA and SFO to Australia.