How far is Helena, MT, from Williston, ND?
The distance between Williston (Williston Basin International Airport) and Helena (Helena Regional Airport) is 402 miles / 647 kilometers / 350 nautical miles.
The driving distance from Williston (XWA) to Helena (HLN) is 516 miles / 831 kilometers, and travel time by car is about 10 hours 14 minutes.
Williston Basin International Airport – Helena Regional Airport
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Distance from Williston to Helena
There are several ways to calculate the distance from Williston to Helena. 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 Williston to Helena?
The estimated flight time from Williston Basin International Airport to Helena Regional Airport is 1 hour and 15 minutes.
What is the time difference between Williston and Helena?
Flight carbon footprint between Williston Basin International Airport (XWA) and Helena Regional Airport (HLN)
On average, flying from Williston to Helena 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 Williston to Helena
See the map of the shortest flight path between Williston Basin International Airport (XWA) and Helena Regional Airport (HLN).
Airport information
| Origin | 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 |
| Destination | Helena Regional Airport |
|---|---|
| City: | Helena, MT |
| Country: | United States |
| IATA Code: | HLN |
| ICAO Code: | KHLN |
| Coordinates: | 46°36′24″N, 111°58′58″W |