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.
Carry-on Baggage. Allegiant passengers must ensure that their single piece of carry-on baggage meets the airline's size requirements. Each carry-on bag must measure no larger than 9 inches high by 14 inches wide and 22 inches tall. When measuring the bag, passengers must include the space taken up by the bag's wheels, handles and any exterior pockets or embellishments.