American Airlines has round-trip flights from Dallas (DFW) to San Francisco (SFO) for $135, NONSTOP. Flights January to February. Weekends available.
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.
Read More Nonstop Flights: Dallas to San Francisco $135 r/t [January-February] – American Airlines