Airlines should make heavier passengers pay more for their plane tickets and lighter ones less, it has been suggested.
The controversial pay-as-you-weigh pricing scheme has been mooted by a Norwegian professor who argues that weight and space should be taken into account by airlines pricing their tickets.
Writing in this month's
Journal of Revenue and Pricing Management, Dr Bharat P Bhatta has put forward three proposals.
The first would see fares directly linked to the weight of a person and their belongings, with a fixed rate for kilograms per passenger.
Under this method, a person weighing 60kg (132lb or 9st 6lb) would pay half the airfare of a 120kg (264lb or 18st 12lb) person.
Dr Bhatta's second proposal involves charging a fixed base rate, with an additional charge for heavier passengers to cover the extra costs.
Every passenger could have a different fare according to this option.
The professor's final suggestion is for passengers to have the same fare if they have an average weight, but this could be discounted for weights below a certain limit or added to for excess weight above it.
This option would result in three types of fares: high, average and low.