American Airlines overweight baggage is considered any bag weighing more than 50lbs. The fees for checking overweight baggage are $100 for bags weighing 51-70lbs and $200 for bags weighing 71-100lbs. These fees are charged in addition to any standard, excess or oversized baggage fees.

If your checked luggage is overweight, the cost typically ranges from $100 to $200 per bag, per direction, depending on the airline and the severity of the excess weight. Most major U.S. carriers (like American, Delta, and United) have a standard weight limit of 50 pounds (23 kg) for economy passengers. If your bag weighs between 51 and 70 pounds, you will likely be charged an additional $100. If it exceeds 70 pounds but is under 100 pounds, the fee often jumps to $200. In 2026, budget airlines like Spirit or Frontier may charge even higher "at-the-counter" fees, sometimes exceeding $150 for just a few extra pounds. To avoid these steep penalties, it is always cheaper to pre-pay for an extra bag online if you know you will be over the limit, or to simply "split" your belongings into two smaller bags. Many travelers now carry a portable digital luggage scale to ensure they are under the 50-pound threshold before arriving at the airport check-in kiosk.