Calculations with different methods
- 2495.684 miles
- 4016.415 kilometers
- 2168.690 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
- 2488.911 miles
- 4005.514 kilometers
- 2162.805 nautical miles
The haversine formula calculates the distance between latitude/longitude points assuming a spherical earth (great-circle distance).
Estimated flight time from Seattle–Tacoma International Airport (SEA) to Logan International Airport (BOS) is 5 hours 13 minutes.
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 294 kg (648 pounds).
Seattle to Boston flight map.
Frequent Flyer Miles Calculator
Seattle (SEA) → Boston (BOS).