How far is Helena, MT, from San Francisco, CA?
The distance between San Francisco (San Francisco International Airport) and Helena (Helena Regional Airport) is 817 miles / 1315 kilometers / 710 nautical miles.
The driving distance from San Francisco (SFO) to Helena (HLN) is 1112 miles / 1789 kilometers, and travel time by car is about 19 hours 15 minutes.
San Francisco International Airport – Helena Regional Airport
Search flights
Distance from San Francisco to Helena
There are several ways to calculate the distance from San Francisco to Helena. Here are two standard methods:
Vincenty's formula (applied above)- 817.091 miles
- 1314.981 kilometers
- 710.033 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- 816.693 miles
- 1314.339 kilometers
- 709.687 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 San Francisco to Helena?
The estimated flight time from San Francisco International Airport to Helena Regional Airport is 2 hours and 2 minutes.
What is the time difference between San Francisco and Helena?
Flight carbon footprint between San Francisco International Airport (SFO) and Helena Regional Airport (HLN)
On average, flying from San Francisco to Helena generates about 136 kg of CO2 per passenger, and 136 kilograms equals 301 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path and driving directions from San Francisco to Helena
See the map of the shortest flight path between San Francisco International Airport (SFO) and Helena Regional Airport (HLN).
Airport information
| Origin | San Francisco International Airport |
|---|---|
| City: | San Francisco, CA |
| Country: | United States  |
| IATA Code: | SFO |
| ICAO Code: | KSFO |
| Coordinates: | 37°37′8″N, 122°22′30″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 |