Are you flying with American Airlines? With American Airlines seat selection, you can sit on the desired seat. Passengers are required to pay for their preferred seats. You will have to pay for a seat if you want to cancel your seat. The fee is around USD 9 to USD 10. But the seat selection charges depend on the destination and travel class. You can book your seat online or call the airline’s customer service at 800‑433‑7300  for seat selection.