Originally Posted by fairviewroad

Charging passengers by their weight makes absolutely no sense, since airlines do not currently charge us based on the true cost of getting from Point A to Point B. If they did, airfare would be based almost solely on distance.

But we all know it isn't, since it's often cheaper to fly cross-country than between two adjacent states. Since that's the case, it doesn't logically follow that the weight of the passenger should have any correlation to the price.