Delta has round-trip flights from Austin (AUS) to Grand Cayman (GCM) for $353-$368 with a connection. Flights in May, July, August, September, October, November, December, and January. Weekends available in August and September. Origin/Destination reversible.
Note: Carry-on bag is allowed for free on Delta. You can avoid paying for seat selection by accepting the randomly assigned seat at the gate.