How far is Pendleton, OR, from Helena, MT?
The distance between Helena (Helena Regional Airport) and Pendleton (Eastern Oregon Regional Airport) is 335 miles / 539 kilometers / 291 nautical miles.
The driving distance from Helena (HLN) to Pendleton (PDT) is 511 miles / 822 kilometers, and travel time by car is about 9 hours 25 minutes.
Helena Regional Airport – Eastern Oregon Regional Airport
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Distance from Helena to Pendleton
There are several ways to calculate the distance from Helena to Pendleton. 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 Helena to Pendleton?
The estimated flight time from Helena Regional Airport to Eastern Oregon Regional Airport is 1 hour and 8 minutes.
What is the time difference between Helena and Pendleton?
The time difference between Helena and Pendleton is 1 hour. Pendleton is 1 hour behind Helena.
Flight carbon footprint between Helena Regional Airport (HLN) and Eastern Oregon Regional Airport (PDT)
On average, flying from Helena to Pendleton 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 Helena to Pendleton
See the map of the shortest flight path between Helena Regional Airport (HLN) and Eastern Oregon Regional Airport (PDT).
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 | 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 |