United Airlines vs American Airlines — carry-on baggage compared | CabinPax

Carry-on rules side by side: maximum dimensions, weight allowance, personal item. Data updated April 2026.

• United Airlines: 23x35x56 cm · Non disponible
• American Airlines: 56x36x23 cm · Non disponible

Same family, same broad approach. The contrast between United Airlines and American Airlines plays out on points of detail, where every centimetre tips the balance for one passenger or another.