. the following table shows annual aircraft fuel consumption and costs , including taxes , for american , it's third-party regional carriers and american eagle , for 2011 through 2013 . aag's consolidated fuel requirements in 2014 are expected to increase significantly to approximately 4.4 billion gallons as a result of a full year of us airways operations . gallons consumed ( in millions ) average cost per gallon total cost ( in millions ) percent of total operating expenses .