Distance from Boston to San Francisco
Estimates: a direct flight at 820 km/h plus 45 min; car at 75 km/h over road distance, which is never a straight line.
Boston0 mBoston is the capital and most populous city of the U.S. state of Massachusetts. It serves as a cultural and financial center of New England, a region of the Northeastern United States. Boston has an area of 48.4 squa…
San Francisco0 mSan Francisco, officially the City and County of San Francisco, is the fourth-most populous city in California and the 17th-most populous in the United States, with a population of 826,079 in 2025. Among U.S. cities w…
Frequently asked questions
How many kilometres from Boston to San Francisco?
It is 4,334 km in a straight line from Boston to San Francisco. By road, where there is one, it is usually 20 to 30 % more.
How long is the flight from Boston to San Francisco?
A direct flight takes about 6 h 2 min, counting take-off and approach. Not every route has a direct flight.