Alaska Airlines has round-trip flights from Dallas (DAL) to San Francisco (SFO) for $135, NONSTOP. Flights January to March. Extended weekends available. Origin/Destination reversible.
Use Code: ALOHA30, this coupon is for 30% off flights to Hawaii, or 10% flights to anywhere else Alaska Airlines flies.
Coupon code expires Today, Friday, 11/25 at midnight. More details are on their promo page (linked).