How far is Helena, MT, from Pendleton, OR?
The distance between Pendleton (Eastern Oregon Regional Airport) and Helena (Helena Regional Airport) is 335 miles / 539 kilometers / 291 nautical miles.
The driving distance from Pendleton (PDT) to Helena (HLN) is 515 miles / 829 kilometers, and travel time by car is about 9 hours 21 minutes.
Eastern Oregon Regional Airport – Helena Regional Airport
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Distance from Pendleton to Helena
There are several ways to calculate the distance from Pendleton to Helena. Here are two standard methods:
Vincenty's formula (applied above)- 335.054 miles
- 539.217 kilometers
- 291.154 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- 334.135 miles
- 537.737 kilometers
- 290.355 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 Pendleton to Helena?
The estimated flight time from Eastern Oregon Regional Airport to Helena Regional Airport is 1 hour and 8 minutes.
What is the time difference between Pendleton and Helena?
The time difference between Pendleton and Helena is 1 hour. Helena is 1 hour ahead of Pendleton.
Flight carbon footprint between Eastern Oregon Regional Airport (PDT) and Helena Regional Airport (HLN)
On average, flying from Pendleton to Helena generates about 74 kg of CO2 per passenger, and 74 kilograms equals 164 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path and driving directions from Pendleton to Helena
See the map of the shortest flight path between Eastern Oregon Regional Airport (PDT) and Helena Regional Airport (HLN).
Airport information
| Origin | Eastern Oregon Regional Airport |
|---|---|
| City: | Pendleton, OR |
| Country: | United States  |
| IATA Code: | PDT |
| ICAO Code: | KPDT |
| Coordinates: | 45°41′42″N, 118°50′27″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 |