this deal from October is still live with updated dates.
American, United and Alaska Airlines have round trip airfares travelling to and from Raleigh NC (RDU) and San Francisco (SFO) for $197, nonstop! These are basic economy fares or on Alaska, they're called Saver Fares.
January 8 -February 27 2019, Tues, Wed or Sat
Enter travel information on Skyscanner [skyscanner.com]
and select the flight you want, then select your favorite OTA to book with.