How far is Helena, MT, from Antananarivo?
The distance between Antananarivo (Ivato International Airport) and Helena (Helena Regional Airport) is 10189 miles / 16398 kilometers / 8854 nautical miles.
Ivato International Airport – Helena Regional Airport
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Distance from Antananarivo to Helena
There are several ways to calculate the distance from Antananarivo to Helena. Here are two standard methods:
Vincenty's formula (applied above)- 10189.371 miles
- 16398.203 kilometers
- 8854.321 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- 10189.593 miles
- 16398.560 kilometers
- 8854.514 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 Antananarivo to Helena?
The estimated flight time from Ivato International Airport to Helena Regional Airport is 19 hours and 47 minutes.
What is the time difference between Antananarivo and Helena?
Flight carbon footprint between Ivato International Airport (TNR) and Helena Regional Airport (HLN)
On average, flying from Antananarivo to Helena generates about 1 331 kg of CO2 per passenger, and 1 331 kilograms equals 2 935 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path from Antananarivo to Helena
See the map of the shortest flight path between Ivato International Airport (TNR) and Helena Regional Airport (HLN).
Airport information
| Origin | Ivato International Airport |
|---|---|
| City: | Antananarivo |
| Country: | Madagascar  |
| IATA Code: | TNR |
| ICAO Code: | FMMI |
| Coordinates: | 18°47′48″S, 47°28′43″E |
| 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 |