Alaska Airlines and Virgin America want your carry-on bags to be 32% smaller

Starting June 4, the dimensions of carry-on bags on Alaska Airlines and Virgin America can be no bigger than 22 inches long, 14 inches high and 9 inches wide. Those are the same maximum dimensions for carry-on bags on Delta, United and American, which set an informal industry standard given their positions as top carriers. There are no federal regulations governing carry-on bags.