How far is San Francisco, CA, from Helena, MT?
The distance between Helena (Helena Regional Airport) and San Francisco (San Francisco International Airport) is 817 miles / 1315 kilometers / 710 nautical miles.
The driving distance from Helena (HLN) to San Francisco (SFO) is 1112 miles / 1789 kilometers, and travel time by car is about 19 hours 17 minutes.
Helena Regional Airport – San Francisco International Airport
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Distance from Helena to San Francisco
There are several ways to calculate the distance from Helena to San Francisco. 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 Helena to San Francisco?
The estimated flight time from Helena Regional Airport to San Francisco International Airport is 2 hours and 2 minutes.
What is the time difference between Helena and San Francisco?
Flight carbon footprint between Helena Regional Airport (HLN) and San Francisco International Airport (SFO)
On average, flying from Helena to San Francisco 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 Helena to San Francisco
See the map of the shortest flight path between Helena Regional Airport (HLN) and San Francisco International Airport (SFO).
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 | 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 |