United Airlines Checked Baggage When it comes to traveling with United Airlines, understanding the checked baggage policy is crucial to ensure a smooth and hassle-free journey. Here's a comprehensive guide to United Airlines' checked baggage rules: Maximum Size and Weight The maximum exterior dimension for standard checked baggage on United Airlines is 62 inches (158 cm). This measurement includes both handles and wheels. It's essential to note this limit to avoid any inconvenience during check-in. Moreover, the weight allowance for checked baggage varies based on the class of service and your MileagePlus Premier® status. Regardless of your status, the maximum weight for checked baggage is set at 70 lbs. Being aware of these size and weight limits helps you pack efficiently and prevents any additional fees or complications at the airport.