How far is Helena, MT, from Pasco, WA?
The distance between Pasco (Tri-Cities Airport (Washington)) and Helena (Helena Regional Airport) is 341 miles / 550 kilometers / 297 nautical miles.
The driving distance from Pasco (PSC) to Helena (HLN) is 449 miles / 723 kilometers, and travel time by car is about 8 hours 3 minutes.
Tri-Cities Airport (Washington) – Helena Regional Airport
Search flights
Distance from Pasco to Helena
There are several ways to calculate the distance from Pasco to Helena. Here are two standard methods:
Vincenty's formula (applied above)- 341.475 miles
- 549.550 kilometers
- 296.733 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- 340.498 miles
- 547.979 kilometers
- 295.885 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 Pasco to Helena?
The estimated flight time from Tri-Cities Airport (Washington) to Helena Regional Airport is 1 hour and 8 minutes.
What is the time difference between Pasco and Helena?
The time difference between Pasco and Helena is 1 hour. Helena is 1 hour ahead of Pasco.
Flight carbon footprint between Tri-Cities Airport (Washington) (PSC) and Helena Regional Airport (HLN)
On average, flying from Pasco to Helena generates about 75 kg of CO2 per passenger, and 75 kilograms equals 166 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path and driving directions from Pasco to Helena
See the map of the shortest flight path between Tri-Cities Airport (Washington) (PSC) and Helena Regional Airport (HLN).
Airport information
| Origin | Tri-Cities Airport (Washington) |
|---|---|
| City: | Pasco, WA |
| Country: | United States  |
| IATA Code: | PSC |
| ICAO Code: | KPSC |
| Coordinates: | 46°15′52″N, 119°7′8″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 |