Carry-on bag limits are identical or nearly identical between airlines. American Airlines and United Airlines both allow carry-on bags with a maximum depth of 9 inches, width of 14 inches and height of 22 inches, inclusive of the bag's wheels and handles. Southwest Airlines allows bags that are up to 10 inches deep, 16 inches wide and 24 inches high.Continue Reading
American Airlines allows passengers one carry-on bag and one personal item. The personal item may be a purse, briefcase, laptop bag or tote. Carry-on bags must fit through the airline's bag sizer and be able to fit into the overhead bin. In addition, passengers may bring along a coat or wrap, newspaper or book, small bag of food, blanket or pillow, diaper bag if accompanying a child, and any assistive devices required, such as walkers or oxygen concentrators.
United Airlines also allows a personal item such as a bag or backpack with measurements no bigger than 9 inches deep, 10 inches wide and 17 inches tall. Southwest Airlines allows a person item, such as a purse, food container or briefcase. The item must be small enough to stow beneath the passenger's seat. For travelers carrying on a pet, the pet carrier counts as the personal item when boarding.Learn more about Accessories