lose $9,333 per year if every flight contains 1 excess pound  If true, the number is massive. Average Americans are ~38.5 pounds overweight (BMI 22.5), so about 25 pounds over BMI 25. 747-400 has a rough passenger number of 550 people/crew (3 different styles ranging from 416 to 660). At let's say 33% normal weighted, 33% obese, 33% overweight, and 1% other. Each category contains 181.5 people.  The overweight people weigh 25 more pounds and the obese weigh 60 more pounds on average.  The overweight section would weigh 4,537.5 pounds extra,  The obese section would weigh 10,890 pounds extra.  Total pounds extra from overweight/obese: 15,427.5 pounds. IF EVERY flight was like this, and the number ($9,333) is accurate.  $143,984,857.5 is lost annually.  Edit: Shit fuck balls 191lbs is their average. Ummm. Shit.