Cheap San Francisco Flights and Deals From Las Vegas (LAS) To San Francisco (SFO) Depart Dec 05 Return Dec 15$69.60Ref:L87Ep9pic0iHBNI5rrYs9g * All fares above were last found on: Oct 21, 2019 and 7:50:08 AM. Fares are round trip. Fares incl. all fuel surcharges, our service fees and taxes. Displayed fares are based on historical data, are subject to change and cannot be guaranteed at the time of booking. See all booking terms and conditions.