Southwest has round-trip flights from Austin or San Antonio (AUS/SAT) to Santa Ana (California) or Atlanta (SNA/ATL) for $168-$186. One-ways available for half that. Flights to Santa Ana are from January to early-March. Flights to Atlanta are from November to early-March. No Friday departures. No Sunday returns. Origin/Destination reversible.
Note: Atlanta flights are NONSTOP. Orange County/Santa Ana flights have a connection.
Note: You may find additional savings if you book your Flight+Hotel together as a package on Southwest Vacations.