November is a long way off, but as of right now the late night MIA-SXM flights start on November 5, (dep 5:35PM, are 9:34PM) and the early morning SXM-MIA flights also start on Monday, November 5 (dep 9:00AM arr 11:17AM). Dates when they operate the service are a bit screwy - sometimes it’s 5 days a week, others 6 or 7. But there are flights available. I only looked at 1-way fares, but I was seeing MIA-SXM at $176/$182 and SXM-MIA for $237/$243.