How far is Petersburg, AK, from Helena, MT?
The distance between Helena (Helena Regional Airport) and Petersburg (Petersburg James A. Johnson Airport) is 1136 miles / 1828 kilometers / 987 nautical miles.
The driving distance from Helena (HLN) to Petersburg (PSG) is 1598 miles / 2571 kilometers, and travel time by car is about 42 hours 50 minutes.
Helena Regional Airport – Petersburg James A. Johnson Airport
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Distance from Helena to Petersburg
There are several ways to calculate the distance from Helena to Petersburg. Here are two standard methods:
Vincenty's formula (applied above)- 1135.568 miles
- 1827.520 kilometers
- 986.782 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- 1133.099 miles
- 1823.546 kilometers
- 984.636 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 Petersburg?
The estimated flight time from Helena Regional Airport to Petersburg James A. Johnson Airport is 2 hours and 39 minutes.
What is the time difference between Helena and Petersburg?
The time difference between Helena and Petersburg is 2 hours. Petersburg is 2 hours behind Helena.
Flight carbon footprint between Helena Regional Airport (HLN) and Petersburg James A. Johnson Airport (PSG)
On average, flying from Helena to Petersburg generates about 159 kg of CO2 per passenger, and 159 kilograms equals 350 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 Petersburg
See the map of the shortest flight path between Helena Regional Airport (HLN) and Petersburg James A. Johnson Airport (PSG).
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 | Petersburg James A. Johnson Airport |
|---|---|
| City: | Petersburg, AK |
| Country: | United States |
| IATA Code: | PSG |
| ICAO Code: | PAPG |
| Coordinates: | 56°48′6″N, 132°56′42″W |