Air Miles Calculator

Distance between Seattle, WA (BFI) and Boston, MA (BOS)

Distance from Seattle to Boston (Seattle Boeing Field – Logan International Airport) is 2494 miles / 4014 kilometers / 2167 nautical miles.

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).

Flight duration

Estimated flight time from Seattle Boeing Field (BFI) 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.

Time Difference

Seattle
Boston

Seattle, WA

 PDT

Boston, MA

 EDT

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 279 kg (615 pounds).

Airport information


A Seattle Boeing Field
City: Seattle, WA
Country: United States Flag of United States
IATA Code: BFI
ICAO Code: KBFI
Coordinates: 47°31′47″N, 122°18′7″W

B Logan International Airport
City: Boston, MA
Country: United States Flag of United States
IATA Code: BOS
ICAO Code: KBOS
Coordinates: 42°21′51″N, 71°0′18″W

Seattle to Boston flight path

Shortest flight path between Seattle Boeing Field (BFI) and Logan International Airport (BOS).

Frequent Flyer Miles Calculator

Seattle (BFI) → Boston (BOS).

Elite level bonus (%):
Booking class bonus (%):
Air miles:
2494
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
2494

Round trip?