How far is Helena, MT, from San Jose, CA?
The distance between San Jose (San Jose International Airport) and Helena (Helena Regional Airport) is 817 miles / 1314 kilometers / 710 nautical miles.
The driving distance from San Jose (SJC) to Helena (HLN) is 1129 miles / 1817 kilometers, and travel time by car is about 19 hours 33 minutes.
San Jose International Airport – Helena Regional Airport
Search flights
Distance from San Jose to Helena
There are several ways to calculate the distance from San Jose to Helena. 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 San Jose to Helena?
The estimated flight time from San Jose International Airport to Helena Regional Airport is 2 hours and 2 minutes.
What is the time difference between San Jose and Helena?
The time difference between San Jose and Helena is 1 hour. Helena is 1 hour ahead of San Jose.
Flight carbon footprint between San Jose International Airport (SJC) and Helena Regional Airport (HLN)
On average, flying from San Jose 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 Jose to Helena
See the map of the shortest flight path between San Jose International Airport (SJC) and Helena Regional Airport (HLN).
Airport information
| Origin | 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 |
| 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 |