How far is Williston, ND, from Decatur, IL?
The distance between Decatur (Decatur Airport) and Williston (Williston Basin International Airport) is 939 miles / 1512 kilometers / 816 nautical miles.
The driving distance from Decatur (DEC) to Williston (XWA) is 1173 miles / 1888 kilometers, and travel time by car is about 21 hours 28 minutes.
Decatur Airport – Williston Basin International Airport
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Distance from Decatur to Williston
There are several ways to calculate the distance from Decatur to Williston. Here are two standard methods:
Vincenty's formula (applied above)- 939.311 miles
- 1511.675 kilometers
- 816.239 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- 937.997 miles
- 1509.560 kilometers
- 815.097 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 Decatur to Williston?
The estimated flight time from Decatur Airport to Williston Basin International Airport is 2 hours and 16 minutes.
What is the time difference between Decatur and Williston?
The time difference between Decatur and Williston is 1 hour. Williston is 1 hour behind Decatur.
Flight carbon footprint between Decatur Airport (DEC) and Williston Basin International Airport (XWA)
On average, flying from Decatur to Williston generates about 147 kg of CO2 per passenger, and 147 kilograms equals 323 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path and driving directions from Decatur to Williston
See the map of the shortest flight path between Decatur Airport (DEC) and Williston Basin International Airport (XWA).
Airport information
| Origin | Decatur Airport |
|---|---|
| City: | Decatur, IL |
| Country: | United States  |
| IATA Code: | DEC |
| ICAO Code: | KDEC |
| Coordinates: | 39°50′4″N, 88°51′56″W |
| Destination | 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 |