Air Miles Calculator

Distance between Seattle, WA (BFI) and Westerly, RI (WST)

Flight distance from Seattle to Westerly (Seattle Boeing Field – Westerly State Airport) is 2489 miles / 4006 kilometers / 2163 nautical miles. Estimated flight time is 5 hours 12 minutes.

Driving distance from Seattle (BFI) to Westerly (WST) is 3026 miles / 4870 kilometers and travel time by car is about 50 hours 34 minutes.

Map of flight path and driving directions from Seattle to Westerly.

Shortest flight path between Seattle Boeing Field (BFI) and Westerly State Airport (WST).

How far is Westerly from Seattle?

There are several ways to calculate distances between Seattle and Westerly. Here are two common methods:

Vincenty's formula (applied above)
  • 2489.116 miles
  • 4005.844 kilometers
  • 2162.983 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
  • 2482.516 miles
  • 3995.222 kilometers
  • 2157.247 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 Westerly State Airport
City: Westerly, RI
Country: United States Flag of United States
IATA Code: WST
ICAO Code: KWST
Coordinates: 41°20′58″N, 71°48′12″W

Time difference and current local times

The time difference between Seattle and Westerly is 3 hours. Westerly is 3 hours ahead of Seattle.

Time Difference

Seattle, WA

 PST

Westerly, RI

 EST

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 274 kg (604 pounds).

Frequent Flyer Miles Calculator

Seattle (BFI) → Westerly (WST).

Distance:
2489
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
2489

Round trip?