How far is Westerly, RI, from Helena, MT?
The distance between Helena (Helena Regional Airport) and Westerly (Westerly State Airport) is 2013 miles / 3240 kilometers / 1749 nautical miles.
The driving distance from Helena (HLN) to Westerly (WST) is 2389 miles / 3844 kilometers, and travel time by car is about 43 hours 39 minutes.
Helena Regional Airport – Westerly State Airport
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Distance from Helena to Westerly
There are several ways to calculate the distance from Helena to Westerly. Here are two standard methods:
Vincenty's formula (applied above)- 2013.252 miles
- 3240.015 kilometers
- 1749.468 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- 2007.988 miles
- 3231.543 kilometers
- 1744.894 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 Westerly?
The estimated flight time from Helena Regional Airport to Westerly State Airport is 4 hours and 18 minutes.
What is the time difference between Helena and Westerly?
The time difference between Helena and Westerly is 2 hours. Westerly is 2 hours ahead of Helena.
Flight carbon footprint between Helena Regional Airport (HLN) and Westerly State Airport (WST)
On average, flying from Helena to Westerly generates about 219 kg of CO2 per passenger, and 219 kilograms equals 483 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 Westerly
See the map of the shortest flight path between Helena Regional Airport (HLN) and Westerly State Airport (WST).
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 | Westerly State Airport |
|---|---|
| City: | Westerly, RI |
| Country: | United States |
| IATA Code: | WST |
| ICAO Code: | KWST |
| Coordinates: | 41°20′58″N, 71°48′12″W |