SF = Saver Fare = Basic Economy. Alaska Airlines joined that bandwagon.
Both United and Alaska Airlines have round trip airfares travelling to and from Nashville (BNA) and San Francisco (SFO) for $177, nonstop. These are Alaska Air's "Saver Fare" with restrictions on seating assignment and last group to board.
Departs BNA: Any Tue, Wed, Sat beginning Jan 8 thru Feb 27
Departs SFO: Any Tue, Wed, Sat beginning Jan 9 thru Feb 27
To book this, enter travel information on Skyscanner [skyscanner.com]
and then select your flights and favorite OTA to book with. For hotels, check out Hotwire's Hot Rates [hotwire.com] [hotwire.com]
hotels or look for latest promotions here [hotels.com]