Question: what are the dimensions of a carry on for american airlines?
Answer: 1 personal item and 1 carry-on* Dimensions should not exceed 18 x 14 x 8 inches (45 x 35 x 20 cm). Diaper bags (1 per child), soft-sided cooler bags with breast milk, child safety seats, strollers and medical or mobility devices don't count as your personal item or carry-on.