The best month to arrive at San Francisco is February and the most expensive month to fly is January. (Average prices, based on 290 datapoints.)
The best day to arrive at San Francisco is Tuesday and it would be best to avoid Friday, as prices are on average 69.31% higher than on Tuesday. (Average prices, based on 414 datapoints.)
At San Francisco the most flights depart around 17:00. (Hourly flights, based on 350 datapoints.)