How far is Helena, MT, from Block Island, RI?
The distance between Block Island (Block Island State Airport) and Helena (Helena Regional Airport) is 2029 miles / 3266 kilometers / 1763 nautical miles.
The driving distance from Block Island (BID) to Helena (HLN) is 2436 miles / 3920 kilometers, and travel time by car is about 45 hours 18 minutes.
Block Island State Airport – Helena Regional Airport
Search flights
Distance from Block Island to Helena
There are several ways to calculate the distance from Block Island to Helena. 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 Block Island to Helena?
The estimated flight time from Block Island State Airport to Helena Regional Airport is 4 hours and 20 minutes.
What is the time difference between Block Island and Helena?
Flight carbon footprint between Block Island State Airport (BID) and Helena Regional Airport (HLN)
On average, flying from Block Island to Helena 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 Block Island to Helena
See the map of the shortest flight path between Block Island State Airport (BID) and Helena Regional Airport (HLN).
Airport information
| Origin | 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 |
| 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 |