U.S. domestic airline fuel-efficiency ranking 2017-2018

This study assesses the fuel efficiency of U.S. airlines on domestic operations in 2017 and 2018. Revenue passenger miles (RPMs) increased 10% and departures increased by 4% from 2016 to 2018. Fuel efficiency in terms of RPMs per gallon of fuel consumed improved by 3%. The net result was a 7% increase in overall fuel burn and CO2 emissions from domestic passenger operations. Over the past five years, CO2 emissions from U.S. domestic operations have increased by 15%.