FlyerTalk Forums - View Single Post - Anyone know the average cost per pound to fly 1,000 miles at $3/gallon fuel?
Old Jul 10, 2007, 11:39 am
  #6  
Bobster
 
Join Date: Sep 2004
Posts: 9,223
I may have the answer using this sample chart for a 777-200:
http://www.boeing.com/commercial/air...sec3charts.pdf

The last 20,000 pounds of payload requires an extra 5,000 pounds of fuel to maintain a constant range of 3,300 nautical miles. (In other words, starting from a 100,000 pound payload, we add 20,000 more pounds to get the marginal difference for the 120,000 pound maximum payload. The chart shows that the extra 20,000 pound payload adds 25,000 pounds to the gross weight, therefore an extra 5,000 pounds of fuel was required.)

So, if a passenger has a total weight of 200 pounds, including baggage, that would require 50 pounds of extra fuel. Roughly. Converting to cost will be left as an exercise for the reader.
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