What are the size restrictions for checked baggage?

The size restrictions for checked baggage on American Airlines are as follows: for domestic and international flights, the maximum dimensions allowed are 62 linear inches (length + width + height) or 158 centimeters. Additionally, the maximum weight for checked bags varies depending on the class of service and destination. For most flights within the United States, the maximum weight allowance is 50 pounds or 23 kilograms for Economy and Basic Economy fares, while First and Business Class passengers can check bags weighing up to 70 pounds or 32 kilograms. However, different weight limits may apply to international travels, so it is advisable to consult the American Airlines website or contact their customer service for specific restrictions based on your route.