For American Airlines in 2026, the standard weight limit for a checked bag in Main Cabin (Economy) is 50 pounds (23 kg). If your bag weighs between 51 and 70 pounds, you will be charged an "overweight" fee, which typically ranges from $100 to $200 depending on the destination. However, if you are flying in Business Class, First Class, or hold top-tier AAdvantage status (like Executive Platinum), your weight allowance is usually increased to 70 pounds (32 kg) per bag for free. American Airlines generally will not accept any single bag that weighs more than 100 pounds (45 kg) due to health and safety regulations for baggage handlers. For domestic flights, if you are a "Basic Economy" passenger, you may also have to pay a separate fee just to check the bag in the first place, regardless of its weight. Always check your specific itinerary, as seasonal "baggage embargos" to certain regions in South America or the Caribbean may further restrict the number and weight of bags you can bring.