How far is San Jose, CA, from Helena, MT?
The distance between Helena (Helena Regional Airport) and San Jose (San Jose International Airport) is 817 miles / 1314 kilometers / 710 nautical miles.
The driving distance from Helena (HLN) to San Jose (SJC) is 1128 miles / 1816 kilometers, and travel time by car is about 19 hours 32 minutes.
Helena Regional Airport – San Jose International Airport
Search flights
Distance from Helena to San Jose
There are several ways to calculate the distance from Helena to San Jose. Here are two standard methods:
Vincenty's formula (applied above)- 816.768 miles
- 1314.461 kilometers
- 709.752 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- 816.485 miles
- 1314.006 kilometers
- 709.506 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 Jose?
The estimated flight time from Helena Regional Airport to San Jose International Airport is 2 hours and 2 minutes.
What is the time difference between Helena and San Jose?
The time difference between Helena and San Jose is 1 hour. San Jose is 1 hour behind Helena.
Flight carbon footprint between Helena Regional Airport (HLN) and San Jose International Airport (SJC)
On average, flying from Helena to San Jose 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 Jose
See the map of the shortest flight path between Helena Regional Airport (HLN) and San Jose International Airport (SJC).
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 Jose International Airport |
|---|---|
| City: | San Jose, CA |
| Country: | United States |
| IATA Code: | SJC |
| ICAO Code: | KSJC |
| Coordinates: | 37°21′45″N, 121°55′44″W |