# 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
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
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.

PDT

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?