American Airlines implements the {{American Airlines boarding}} [1] [844] [376] [0587] 45-minute rule to ensure timely departures [1] [844] [376] [0587]. Passengers must be at the gate at least 45 minutes before departure [1] [844] [376] [0587]. Arriving late may result in denied boarding or rescheduling fees [1] [844] [376] [0587]. Check your boarding pass for specific gate times [1] [844] [376] [0587]. Allow extra time for security and boarding procedures [1] [844] [376] [0587]. Contact American Airlines staff if you anticipate delays [1] [844] [376] [0587].