Definition of abbreviation. 1 : a shortened form of a written word or phrase used in place of the whole word or phrase âAmtâ is an abbreviation for âamount.â âUSAâ is an abbreviation of âUnited States of America.â.
The limit at those airlines stands at 22 inches tall by 14 inches wide by 9 inches deep. Southwest allows carry-ons that are 24 by 16 by 10. But IATA's recommendation is just that. Though the trade group is an influential mouthpiece for the industry, airlines are not obligated to adopt the carry-on standards.
How Big Can My Carry-On Bag Be These Days? Though some airlines (JetBlue; Alaska) give you a few extra inches here and there, the major domestic carriers are all in agreement: the maximum allowable carry-on bag is 22 x 14 x 9. This standard has been in place for years, but in the past airlines were lenient about ensuring bags adhered to it.