How far is New Orleans, LA, from Helena, MT?
The distance between Helena (Helena Regional Airport) and New Orleans (Louis Armstrong New Orleans International Airport) is 1635 miles / 2631 kilometers / 1421 nautical miles.
The driving distance from Helena (HLN) to New Orleans (MSY) is 2078 miles / 3345 kilometers, and travel time by car is about 37 hours 6 minutes.
Helena Regional Airport – Louis Armstrong New Orleans International Airport
Search flights
Distance from Helena to New Orleans
There are several ways to calculate the distance from Helena to New Orleans. 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 Helena to New Orleans?
The estimated flight time from Helena Regional Airport to Louis Armstrong New Orleans International Airport is 3 hours and 35 minutes.
What is the time difference between Helena and New Orleans?
The time difference between Helena and New Orleans is 1 hour. New Orleans is 1 hour ahead of Helena.
Flight carbon footprint between Helena Regional Airport (HLN) and Louis Armstrong New Orleans International Airport (MSY)
On average, flying from Helena to New Orleans 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 Helena to New Orleans
See the map of the shortest flight path between Helena Regional Airport (HLN) and Louis Armstrong New Orleans International Airport (MSY).
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 | 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 |