Samoa Air says a controversial new policy that calculates a passenger's fare based on their weight and the weight of their luggage is proving successful.

The airline introduced the policy in January, saying it would make flying safer.

Chief executive Chris Langton told Radio Australia that families are benefiting the most.

He said because they were charging by weight rather than by seat, some families were finding a family of two adults and several small children could travel considerably cheaper than previously.


Rates range from a dollar a kilo on the airline's shortest domestic route to about $4.16 per kilo to fly from Samoa to American Samoa.