How far is Helena, MT, from Perth?
The distance between Perth (Perth Airport) and Helena (Helena Regional Airport) is 9726 miles / 15652 kilometers / 8452 nautical miles.
Perth Airport – Helena Regional Airport
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Distance from Perth to Helena
There are several ways to calculate the distance from Perth to Helena. Here are two standard methods:
Vincenty's formula (applied above)- 9725.826 miles
- 15652.199 kilometers
- 8451.511 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- 9728.078 miles
- 15655.825 kilometers
- 8453.469 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 Perth to Helena?
The estimated flight time from Perth Airport to Helena Regional Airport is 18 hours and 54 minutes.
What is the time difference between Perth and Helena?
The time difference between Perth and Helena is 15 hours. Helena is 15 hours behind Perth.
Flight carbon footprint between Perth Airport (PER) and Helena Regional Airport (HLN)
On average, flying from Perth to Helena generates about 1 259 kg of CO2 per passenger, and 1 259 kilograms equals 2 775 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path from Perth to Helena
See the map of the shortest flight path between Perth Airport (PER) and Helena Regional Airport (HLN).
Airport information
| Origin | Perth Airport |
|---|---|
| City: | Perth |
| Country: | Australia  |
| IATA Code: | PER |
| ICAO Code: | YPPH |
| Coordinates: | 31°56′25″S, 115°58′1″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 |