How far is Helena, MT, from Santa Rosa, CA?
The distance between Santa Rosa (Charles M. Schulz–Sonoma County Airport) and Helena (Helena Regional Airport) is 785 miles / 1263 kilometers / 682 nautical miles.
The driving distance from Santa Rosa (STS) to Helena (HLN) is 1115 miles / 1795 kilometers, and travel time by car is about 19 hours 24 minutes.
Charles M. Schulz–Sonoma County Airport – Helena Regional Airport
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Distance from Santa Rosa to Helena
There are several ways to calculate the distance from Santa Rosa to Helena. Here are two standard methods:
Vincenty's formula (applied above)- 784.615 miles
- 1262.716 kilometers
- 681.812 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- 783.992 miles
- 1261.713 kilometers
- 681.271 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 Santa Rosa to Helena?
The estimated flight time from Charles M. Schulz–Sonoma County Airport to Helena Regional Airport is 1 hour and 59 minutes.
What is the time difference between Santa Rosa and Helena?
The time difference between Santa Rosa and Helena is 1 hour. Helena is 1 hour ahead of Santa Rosa.
Flight carbon footprint between Charles M. Schulz–Sonoma County Airport (STS) and Helena Regional Airport (HLN)
On average, flying from Santa Rosa to Helena generates about 133 kg of CO2 per passenger, and 133 kilograms equals 294 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path and driving directions from Santa Rosa to Helena
See the map of the shortest flight path between Charles M. Schulz–Sonoma County Airport (STS) and Helena Regional Airport (HLN).
Airport information
| Origin | Charles M. Schulz–Sonoma County Airport |
|---|---|
| City: | Santa Rosa, CA |
| Country: | United States  |
| IATA Code: | STS |
| ICAO Code: | KSTS |
| Coordinates: | 38°30′32″N, 122°48′46″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 |