How far is Portland, ME, from Helena, MT?
The distance between Helena (Helena Regional Airport) and Portland (Portland International Jetport) is 2024 miles / 3257 kilometers / 1758 nautical miles.
The driving distance from Helena (HLN) to Portland (PWM) is 2454 miles / 3949 kilometers, and travel time by car is about 46 hours 8 minutes.
Helena Regional Airport – Portland International Jetport
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Distance from Helena to Portland
There are several ways to calculate the distance from Helena to Portland. Here are two standard methods:
Vincenty's formula (applied above)- 2023.584 miles
- 3256.642 kilometers
- 1758.446 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- 2017.994 miles
- 3247.647 kilometers
- 1753.589 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 Portland?
The estimated flight time from Helena Regional Airport to Portland International Jetport is 4 hours and 19 minutes.
What is the time difference between Helena and Portland?
The time difference between Helena and Portland is 2 hours. Portland is 2 hours ahead of Helena.
Flight carbon footprint between Helena Regional Airport (HLN) and Portland International Jetport (PWM)
On average, flying from Helena to Portland generates about 220 kg of CO2 per passenger, and 220 kilograms equals 486 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 Portland
See the map of the shortest flight path between Helena Regional Airport (HLN) and Portland International Jetport (PWM).
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 | Portland International Jetport |
|---|---|
| City: | Portland, ME |
| Country: | United States |
| IATA Code: | PWM |
| ICAO Code: | KPWM |
| Coordinates: | 43°38′46″N, 70°18′33″W |