On Tuesday, the International Air Transport Association (IATA) announced a new initiative "to optimize the accommodation of carry-on bags given differing carry-on bag sizes and airline policies."
IATA says it is solving the problem of carry-on bag sizes on behalf of passengers.
“The development of an agreed optimal cabin bag size will bring common sense and order to the problem of differing sizes for carry-on bags,” said Tom Windmuller, IATA’s Senior Vice President for Airport, Passenger, Cargo and Security. "We know the current situation can be frustrating for passengers. This work will help to iron out inconsistencies and lead to an improved passenger experience."
The new suggested carry-on size, at 21.5 x 13.5 x 7.5 inches, "means that theoretically everyone should have a chance to store their carry-on bags on board aircraft of 120 seats or larger," according to IATA.
Current carry-on baggage allowances average 22 x 14 x 9 inches