How far is Santa Rosa, CA, from Helena, MT?
The distance between Helena (Helena Regional Airport) and Santa Rosa (Charles M. Schulz–Sonoma County Airport) is 785 miles / 1263 kilometers / 682 nautical miles.
The driving distance from Helena (HLN) to Santa Rosa (STS) is 1115 miles / 1795 kilometers, and travel time by car is about 19 hours 24 minutes.
Helena Regional Airport – Charles M. Schulz–Sonoma County Airport
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Distance from Helena to Santa Rosa
There are several ways to calculate the distance from Helena to Santa Rosa. 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 Helena to Santa Rosa?
The estimated flight time from Helena Regional Airport to Charles M. Schulz–Sonoma County Airport is 1 hour and 59 minutes.
What is the time difference between Helena and Santa Rosa?
The time difference between Helena and Santa Rosa is 1 hour. Santa Rosa is 1 hour behind Helena.
Flight carbon footprint between Helena Regional Airport (HLN) and Charles M. Schulz–Sonoma County Airport (STS)
On average, flying from Helena to Santa Rosa 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 Helena to Santa Rosa
See the map of the shortest flight path between Helena Regional Airport (HLN) and Charles M. Schulz–Sonoma County Airport (STS).
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 | 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 |