Last year I flew to SXM through MIA, the AA ticket agent was not going to let me fly bc she thought my PP would expire in 5 months. Of course she didnt figure out that she read the date wrong and it didnt expire for a year and 5 months. I dont know if that was a SXM rule or just something being enforced by AA. Me, I wouldn't take a chance some over zealous ticket or gate agent decides you shouldnt fly that day.