Carry On Luggage Size Requirements 2025 United Airlines. In 2015, the international air transport association. 22 × 14 × 9 inches (56 ×.

Your bag must fit in the overhead bin, so it must be 9 in x 14 in x 22 in (23 cm x 35 cm x 56 cm). 22 × 14 × 9 inches (56 ×.