In the United States, Northwest Airlines has excluded spoons from its cutlery pack if the in-flight meal does not require one.
It is not alone, according to Paul Steele, director of the environment at IATA.
Another carrier, JAL of Japan, took everything it loaded from a 747 and put it on the floor of a school gym to see what it really needed.
As a result it shaved a fraction of a centimetre off all its cutlery to cut weight.
“When you are talking about a jumbo jet with 400 people on board, being served two to three meals, this can save a few kilos,” he said.
“You work out how much fuel that consumes over a year, and you can be talking about a considerable amount of money”.
Other carriers have come up with all sorts of ingenious initiatives to shift the flab off their aircraft.
In-flight magazines are going and carriers are even putting their duty-free catalogues onto the seat-back televisions.
“Airlines are going through what they put on a plane. They are now saying that if we are only carrying 100 passengers, then only load what they need,” said Mr Steele.