How far is Helena, MT, from Portland, ME?
The distance between Portland (Portland International Jetport) and Helena (Helena Regional Airport) is 2024 miles / 3257 kilometers / 1758 nautical miles.
The driving distance from Portland (PWM) to Helena (HLN) is 2451 miles / 3945 kilometers, and travel time by car is about 46 hours 6 minutes.
Portland International Jetport – Helena Regional Airport
Search flights
Distance from Portland to Helena
There are several ways to calculate the distance from Portland to Helena. 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 Portland to Helena?
The estimated flight time from Portland International Jetport to Helena Regional Airport is 4 hours and 19 minutes.
What is the time difference between Portland and Helena?
The time difference between Portland and Helena is 2 hours. Helena is 2 hours behind Portland.
Flight carbon footprint between Portland International Jetport (PWM) and Helena Regional Airport (HLN)
On average, flying from Portland to Helena 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 Portland to Helena
See the map of the shortest flight path between Portland International Jetport (PWM) and Helena Regional Airport (HLN).
Airport information
| Origin | Portland International Jetport |
|---|---|
| City: | Portland, ME |
| Country: | United States  |
| IATA Code: | PWM |
| ICAO Code: | KPWM |
| Coordinates: | 43°38′46″N, 70°18′33″W |
| 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 |