Air Miles Calculator

Distance between Seattle, WA (BFI) and Watertown, SD (ATY)

Flight distance from Seattle to Watertown (Seattle Boeing Field – Watertown Regional Airport) is 1214 miles / 1953 kilometers / 1055 nautical miles. Estimated flight time is 2 hours 47 minutes.

Driving distance from Seattle (BFI) to Watertown (ATY) is 1570 miles / 2526 kilometers and travel time by car is about 25 hours 30 minutes.

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

Shortest flight path between Seattle Boeing Field (BFI) and Watertown Regional Airport (ATY).

How far is Watertown from Seattle?

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

Vincenty's formula (applied above)
  • 1213.569 miles
  • 1953.050 kilometers
  • 1054.563 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
  • 1210.183 miles
  • 1947.601 kilometers
  • 1051.620 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 Watertown Regional Airport
City: Watertown, SD
Country: United States Flag of United States
IATA Code: ATY
ICAO Code: KATY
Coordinates: 44°54′50″N, 97°9′16″W

Time difference and current local times

The time difference between Seattle and Watertown is 2 hours. Watertown is 2 hours ahead of Seattle.

Time Difference

Seattle, WA

 PDT

Watertown, SD

 CDT

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 162 kg (357 pounds).

Frequent Flyer Miles Calculator

Seattle (BFI) → Watertown (ATY).

Distance:
1214
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
1214

Round trip?