American Airlines provides the service of oversized or overweight bags; however, the extra charges are applicable. The frequent flyers and premium cabin passengers may get free checked baggage to make the overall travel experience much better. So, it is always recommended that travelers check the baggage policy of American Airlines before traveling to avoid any surprise at the airport from check-in to arrival. Read- AA Baggage policy -https://www.skyfarerules.com/blog/american-airlines-baggage-policy/