United Airlines offers roundtrip domestic flights with prices starting at $134.20, as provided by ShermansTravel. (Click on "United.com" in the main paragraph to see this sale; all taxes are included.) That's tied with our mention from last week and the lowest current rate we could find for select routes by $5. This price is valid on flights departing from Los Angeles, CA, (LAX) to San Francisco, CA, (SFO) on January 12, 2015 with return on January 19, 2015; prices vary depending on the departure cities and dates chosen. Book this travel deal by November 26 for travel from January 2015 through February 2015. Click here to see more routes.