Flight International Airport departs from Los Angeles International Airport at 10:25 and arrives at San Francisco International Airport at 11:58.
The flighttime is about 1h 33m. The distance travelled ("as the bird flies"): 487 Km. So the average speed is roughly 314 Km.
The best day to arrive at Los Angeles is Tuesday and it would be best to avoid Sunday, as prices are on average 505.52% higher than on Tuesday. (Average prices, based on 124848 datapoints.)
We have a lot more statistics for flights UA 1791 and between Los Angeles and San Francisco.