Alaska Airlines has round-trip flights from Dallas (DAL) to San Francisco (SFO) for $158, NONSTOP. Flights October to November. Departures on Tuesday, Wednesday, and Saturday. Very few extended weekends available. Origin/Destination reversible. No Thanksgiving dates.
A Carry-on bag and also a personal item is allowed for free on Alaska Airlines. You can avoid paying for seat selection by accepting the randomly assigned seat at the gate.