Map of flight path and driving directions from Seattle to Boston.
Shortest flight path between Seattle Boeing Field (BFI) and Logan International Airport (BOS).
How far is Boston from Seattle?
There are several ways to calculate distances between Seattle and Boston. 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).
Time difference and current local times
The time difference between Seattle and Boston is 3 hours. Boston is 3 hours ahead of Seattle.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 275 kg (605 pounds).
Frequent Flyer Miles Calculator
Seattle (BFI) → Boston (BOS).