How far is Williston, ND, from Helena, MT?
The distance between Helena (Helena Regional Airport) and Williston (Williston Basin International Airport) is 402 miles / 647 kilometers / 350 nautical miles.
The driving distance from Helena (HLN) to Williston (XWA) is 516 miles / 831 kilometers, and travel time by car is about 10 hours 10 minutes.
Helena Regional Airport – Williston Basin International Airport
Search flights
Distance from Helena to Williston
There are several ways to calculate the distance from Helena to Williston. Here are two standard methods:
Vincenty's formula (applied above)- 402.267 miles
- 647.387 kilometers
- 349.561 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- 401.187 miles
- 645.648 kilometers
- 348.622 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 Helena to Williston?
The estimated flight time from Helena Regional Airport to Williston Basin International Airport is 1 hour and 15 minutes.
What is the time difference between Helena and Williston?
Flight carbon footprint between Helena Regional Airport (HLN) and Williston Basin International Airport (XWA)
On average, flying from Helena to Williston generates about 84 kg of CO2 per passenger, and 84 kilograms equals 186 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path and driving directions from Helena to Williston
See the map of the shortest flight path between Helena Regional Airport (HLN) and Williston Basin International Airport (XWA).
Airport information
| Origin | Helena Regional Airport |
|---|---|
| City: | Helena, MT |
| Country: | United States  |
| IATA Code: | HLN |
| ICAO Code: | KHLN |
| Coordinates: | 46°36′24″N, 111°58′58″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 |