Virgin America offers select roundtrip fares starting at $117.60. (Click on "Virgin America" under "Details" to see this deal.) That's $60 under a similar sale in May and the lowest rate we could find for select routes by $51. This price is valid on flights from San Francisco, CA, (SFO) to Los Angeles, CA, (LAX) departing on September 5; prices vary depending on the travel cities and dates chosen. Sale ends September 3. Several exclusions and blackout dates apply, and fees may be additional.