# 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
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
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.

MST

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?