The distance from Watertown to San Francisco is approximately 2,700 miles. Flying is the most practical mode of transport. Direct flights are available from Boston Logan International Airport (BOS) to San Francisco International Airport (SFO). The flight time is approximately 6 hours and 30 minutes. Driving across the country is a multi-day journey via I-80 West.
Total Distance: 4,900 km driving, 4,300 km air distance.
Use the BART train from SFO to reach downtown San Francisco.
September and October for the warmest weather.