Alaska Airlines has round-trip flights from Austin (AUS) to Seattle, San Francisco, or San Jose, California (SEA, SFO, SJC) for $138-$178, NONSTOP. Flights January to February. Departures on Tuesday, Wednesday, and Saturday. Extended weekends available. Origin/Destination reversible.
A Carry-on bag and also a personal item is allowed for free. You can avoid paying for seat selection by accepting the randomly assigned seat at the gate.