| Cheap Flights: Austin to/from Sint Maarten $283-$286 r/t [August-September] (Saturdays Only) â JetBlue JetBlue has round-trip flights from Austin (AUS) to Sint Maarten (SXM) for $283-$286 with a connection. Flights August to September. Departures on Saturday only. Origin/Destination reversible. 7-day minimum stay required. Click for more details and booking links Cheap Flights: Austin to/from Sint Maarten $283-$286 r/t [August-September] (Saturdays Only) â JetBlue . | 