Air Miles Calculator

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

Flight distance from Seattle to Boston (Seattle Boeing Field – Logan International Airport) is 2494 miles / 4014 kilometers / 2167 nautical miles. Estimated flight time is 5 hours 13 minutes.

Driving distance from Seattle (BFI) to Boston (BOS) is 2995 miles / 4820 kilometers and travel time by car is about 51 hours 20 minutes.

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).

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

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, WA

 PST

Boston, MA

 EST

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 275 kg (605 pounds).

Frequent Flyer Miles Calculator

Seattle (BFI) → Boston (BOS).

Distance:
2494
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
2494

Round trip?