Distance between Casper, WY (CPR) and Williston, ND (XWA)
Flight distance from Casper to Williston (Casper–Natrona County International Airport – Williston Basin International Airport) is 392 miles / 631 kilometers / 341 nautical miles. Estimated flight time is 1 hour 14 minutes.
Driving distance from Casper (CPR) to Williston (XWA) is 526 miles / 846 kilometers and travel time by car is about 9 hours 46 minutes.
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Casper - Williston
Map of flight path and driving directions from Casper to Williston.
Shortest flight path between Casper–Natrona County International Airport (CPR) and Williston Basin International Airport (XWA).
How far is Williston from Casper?
There are several ways to calculate distances between Casper and Williston. Here are two common methods:
Vincenty's formula (applied above)- 392.194 miles
- 631.175 kilometers
- 340.807 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- 392.233 miles
- 631.237 kilometers
- 340.841 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 | Williston Basin International Airport |
|---|---|
| City: | Williston, ND |
| Country: | United States |
| IATA Code: | XWA |
| ICAO Code: | KXWA |
| Coordinates: | 48°15′30″N, 103°44′55″W |
Time difference and current local times
There is no time difference between Casper and Williston.
Time Difference
Casper, WY
Williston, ND
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 83 kg (182 pounds).
Frequent Flyer Miles Calculator
Casper (CPR) → Williston (XWA).
In total
Round trip?