How far is Helena, MT, from New Orleans, LA?
The distance between New Orleans (Louis Armstrong New Orleans International Airport) and Helena (Helena Regional Airport) is 1635 miles / 2631 kilometers / 1421 nautical miles.
The driving distance from New Orleans (MSY) to Helena (HLN) is 2077 miles / 3343 kilometers, and travel time by car is about 36 hours 58 minutes.
Louis Armstrong New Orleans International Airport – Helena Regional Airport
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Distance from New Orleans to Helena
There are several ways to calculate the distance from New Orleans to Helena. Here are two standard methods:
Vincenty's formula (applied above)- 1634.853 miles
- 2631.041 kilometers
- 1420.648 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- 1634.251 miles
- 2630.072 kilometers
- 1420.125 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 New Orleans to Helena?
The estimated flight time from Louis Armstrong New Orleans International Airport to Helena Regional Airport is 3 hours and 35 minutes.
What is the time difference between New Orleans and Helena?
The time difference between New Orleans and Helena is 1 hour. Helena is 1 hour behind New Orleans.
Flight carbon footprint between Louis Armstrong New Orleans International Airport (MSY) and Helena Regional Airport (HLN)
On average, flying from New Orleans to Helena generates about 188 kg of CO2 per passenger, and 188 kilograms equals 415 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path and driving directions from New Orleans to Helena
See the map of the shortest flight path between Louis Armstrong New Orleans International Airport (MSY) and Helena Regional Airport (HLN).
Airport information
| Origin | Louis Armstrong New Orleans International Airport |
|---|---|
| City: | New Orleans, LA |
| Country: | United States  |
| IATA Code: | MSY |
| ICAO Code: | KMSY |
| Coordinates: | 29°59′36″N, 90°15′28″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 |