How far is Helena, MT, from Islip, NY?
The distance between Islip (Long Island MacArthur Airport) and Helena (Helena Regional Airport) is 1968 miles / 3166 kilometers / 1710 nautical miles.
The driving distance from Islip (ISP) to Helena (HLN) is 2315 miles / 3725 kilometers, and travel time by car is about 42 hours 0 minutes.
Long Island MacArthur Airport – Helena Regional Airport
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Distance from Islip to Helena
There are several ways to calculate the distance from Islip to Helena. Here are two standard methods:
Vincenty's formula (applied above)- 1967.506 miles
- 3166.395 kilometers
- 1709.716 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- 1962.459 miles
- 3158.272 kilometers
- 1705.331 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 Islip to Helena?
The estimated flight time from Long Island MacArthur Airport to Helena Regional Airport is 4 hours and 13 minutes.
What is the time difference between Islip and Helena?
The time difference between Islip and Helena is 2 hours. Helena is 2 hours behind Islip.
Flight carbon footprint between Long Island MacArthur Airport (ISP) and Helena Regional Airport (HLN)
On average, flying from Islip to Helena generates about 215 kg of CO2 per passenger, and 215 kilograms equals 473 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path and driving directions from Islip to Helena
See the map of the shortest flight path between Long Island MacArthur Airport (ISP) and Helena Regional Airport (HLN).
Airport information
| Origin | Long Island MacArthur Airport |
|---|---|
| City: | Islip, NY |
| Country: | United States  |
| IATA Code: | ISP |
| ICAO Code: | KISP |
| Coordinates: | 40°47′42″N, 73°6′0″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 |