Map of flight path and driving directions from Seattle to San Francisco.
Shortest flight path between Seattle Boeing Field (BFI) and San Francisco International Airport (SFO).
How far is San Francisco from Seattle?
There are several ways to calculate distances between Seattle and San Francisco. Here are two common methods:Vincenty's formula (applied above)
- 684.115 miles
- 1100.977 kilometers
- 594.480 nautical miles
Vincenty's formula calculates the distance between latitude/longitude points on the earth’s surface, using an ellipsoidal model of the earth.Haversine formula
- 684.795 miles
- 1102.070 kilometers
- 595.070 nautical miles
The haversine formula calculates the distance between latitude/longitude points assuming a spherical earth (great-circle distance – the shortest distance between two points).
Time difference and current local times
There is no time difference between Seattle and San Francisco.
San Francisco, CA
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 123 kg (271 pounds).
Frequent Flyer Miles Calculator
Seattle (BFI) → San Francisco (SFO).