How far is Block Island, RI, from Helena, MT?
The distance between Helena (Helena Regional Airport) and Block Island (Block Island State Airport) is 2029 miles / 3266 kilometers / 1763 nautical miles.
The driving distance from Helena (HLN) to Block Island (BID) is 2429 miles / 3909 kilometers, and travel time by car is about 45 hours 7 minutes.
Helena Regional Airport – Block Island State Airport
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Distance from Helena to Block Island
There are several ways to calculate the distance from Helena to Block Island. Here are two standard methods:
Vincenty's formula (applied above)- 2029.111 miles
- 3265.537 kilometers
- 1763.249 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- 2023.829 miles
- 3257.037 kilometers
- 1758.659 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 Block Island?
The estimated flight time from Helena Regional Airport to Block Island State Airport is 4 hours and 20 minutes.
What is the time difference between Helena and Block Island?
Flight carbon footprint between Helena Regional Airport (HLN) and Block Island State Airport (BID)
On average, flying from Helena to Block Island generates about 221 kg of CO2 per passenger, and 221 kilograms equals 487 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 Block Island
See the map of the shortest flight path between Helena Regional Airport (HLN) and Block Island State Airport (BID).
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 | Block Island State Airport |
|---|---|
| City: | Block Island, RI |
| Country: | United States |
| IATA Code: | BID |
| ICAO Code: | KBID |
| Coordinates: | 41°10′5″N, 71°34′40″W |