How is the flight distance measured?

Flight distances are measured as the great-circle (straight-line) distance between airports. Actual flight paths may be slightly longer due to air traffic routing and weather avoidance.

How long does the flight from Boston to San Francisco take?

Flight time depends on the exact route and aircraft, but at roughly 4,334 km the typical non-stop flight takes 1–10 hours. Check the flight duration page for the exact average.

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Flight Distance: Boston to San Francisco

4,334

Kilometres (km)

2,693

Miles (mi)

2,340

Nautical miles

About this flight distance

The great circle distance from Boston to San Francisco is approximately 4,334 km. The typical flight time is 5h 50m.

This is the shortest possible distance between the two cities as the crow flies. Real flight paths are often slightly longer due to air traffic control routing, weather, and airspace restrictions.

Related route pages

→Direct flights Boston to San Francisco →Flight duration Boston to San Francisco →Cheapest day to fly Boston to San Francisco →Flights Boston to San Francisco

Nearby airports

Near Boston

Laurence G Hanscom Field (BED)26 km
Manchester Boston Regional Airport (MHT)72 km
Worcester Regional Airport (ORH)72 km

Near San Francisco

San Carlos Airport (SQL)16 km
Metropolitan Oakland International Airport (OAK)18 km
Norman Y. Mineta San Jose International Airport (SJC)49 km

Frequently Asked Questions

The great-circle distance from Boston to San Francisco is approximately 4,334 km (2,693 miles).