For planes to take off daily we must assume there’s a lot of math that comes into play. Mainly, the weight of passengers is equally distributed on every flight. Along with the balance and fuel requirements as well.

The general numbers used by airlines are decided by the Federal Aviation Administration. The numbers vary between male and female passengers. They also vary depending on the seasons, summer versus winter. Now the weight of a passenger isn’t just the body weight but also the sum of the weight of their clothing and carry-on luggage as well.

As of this year, the FAA has increased the weight of passengers:

The summer weight for females increased from 145 pounds to 179 pounds
The average winter weight for females increased from 150 pounds to 184 pounds
The average summer weight for males increased from 185 pounds to 200 pounds
The average winter weight for males increased from 190 pounds to 205 pounds

According to the FAA’s reports passengers have increased by 15 – 34 pounds more in weight.