American Airlines has round-trip flights from Austin (AUS) to Curacao (CUR) for $346 with a connection. Flights in May, July, August, September, October, November, January, and February. No Thursday departures. Weekends available. Origin/Destination reversible. No Thanksgiving dates.
A Carry-on bag and also a personal item is allowed for free on American. You can avoid paying for seat selection by accepting the randomly assigned seat at the gate.