American Airlines has used electro sustainable aviation fuel on a commercial passenger flight following what the carrier says was the first delivery of non-biobased sustainable aviation fuel (SAF) to a US commercial airport. It was then used aboard an American flight from Corpus Christi to Dallas Fort Worth International Airport (DFW). The synthetic fuel was blended with conventional jet fuel before being delivered to the airport’s shared fuel system. Cost remains one of the biggest obstacles to wider use of synthetic aviation fuel. SAF accounts for less than 1% of global jet fuel consumption, according to American and Infinium.