Air Miles Calculator

Distance between Casper, WY (CPR) and Watertown, SD (ATY)

Flight distance from Casper to Watertown (Casper–Natrona County International Airport – Watertown Regional Airport) is 485 miles / 780 kilometers / 421 nautical miles. Estimated flight time is 1 hour 25 minutes.

Driving distance from Casper (CPR) to Watertown (ATY) is 698 miles / 1123 kilometers and travel time by car is about 11 hours 10 minutes.

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

Shortest flight path between Casper–Natrona County International Airport (CPR) and Watertown Regional Airport (ATY).

How far is Watertown from Casper?

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

Vincenty's formula (applied above)
  • 484.527 miles
  • 779.771 kilometers
  • 421.043 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
  • 483.344 miles
  • 777.867 kilometers
  • 420.015 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 Casper–Natrona County International Airport
City: Casper, WY
Country: United States Flag of United States
IATA Code: CPR
ICAO Code: KCPR
Coordinates: 42°54′28″N, 106°27′50″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 Casper and Watertown is 1 hour. Watertown is 1 hour ahead of Casper.

Time Difference

Casper, WY

 MST

Watertown, SD

 CST

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 96 kg (212 pounds).

Frequent Flyer Miles Calculator

Casper (CPR) → Watertown (ATY).

Distance:
485
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
485

Round trip?