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How far is St Louis, MO, from Watertown, SD?

The distance between Watertown (Watertown Regional Airport) and St Louis (St. Louis Lambert International Airport) is 551 miles / 886 kilometers / 479 nautical miles.

The driving distance from Watertown (ATY) to St Louis (STL) is 703 miles / 1131 kilometers, and travel time by car is about 12 hours 32 minutes.

Watertown Regional Airport – St. Louis Lambert International Airport

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551
Miles
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886
Kilometers
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479
Nautical miles

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Distance from Watertown to St Louis

There are several ways to calculate the distance from Watertown to St Louis. Here are two standard methods:

Vincenty's formula (applied above)
  • 550.662 miles
  • 886.205 kilometers
  • 478.512 nautical miles

Vincenty's formula calculates the distance between latitude/longitude points on the earth's surface using an ellipsoidal model of the planet.

Haversine formula
  • 550.455 miles
  • 885.872 kilometers
  • 478.332 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).

How long does it take to fly from Watertown to St Louis?

The estimated flight time from Watertown Regional Airport to St. Louis Lambert International Airport is 1 hour and 32 minutes.

What is the time difference between Watertown and St Louis?

There is no time difference between Watertown and St Louis.

Flight carbon footprint between Watertown Regional Airport (ATY) and St. Louis Lambert International Airport (STL)

On average, flying from Watertown to St Louis generates about 106 kg of CO2 per passenger, and 106 kilograms equals 234 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path and driving directions from Watertown to St Louis

See the map of the shortest flight path between Watertown Regional Airport (ATY) and St. Louis Lambert International Airport (STL).

Airport information

Origin 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
Destination St. Louis Lambert International Airport
City: St Louis, MO
Country: United States Flag of United States
IATA Code: STL
ICAO Code: KSTL
Coordinates: 38°44′55″N, 90°22′12″W