| Cheap Flights: Austin to/from Aruba $291-$294 r/t [August-March] â American Airlines American Airlines has round-trip flights from Austin (AUS) to Aruba (AUA) for $291-$294 with a connection. Flights August to March. Departures on Monday, Tuesday, and Wednesday. Origin/Destination reversible. Click for more details and booking links Cheap Flights: Austin to/from Aruba $291-$294 r/t [August-March] â American Airlines . | 