How far is Seattle from Boston?
There are several ways to calculate distances between Boston and Seattle. Here are two common methods:Vincenty's formula (applied above)
- 2494.268 miles
- 4014.135 kilometers
- 2167.460 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
- 2487.498 miles
- 4003.240 kilometers
- 2161.577 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).
Estimated flight time from Logan International Airport (BOS) to Boeing Field (BFI) is 5 hours 13 minutes.
Time difference and current local times
The time difference between Boston and Seattle is 3 hours. Seattle is 3 hours behind Boston.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 294 kg (647 pounds).
Boston to Seattle flight map.
Frequent Flyer Miles Calculator
Boston (BOS) → Seattle (BFI).