How far is Helena, MT, from Santa Ana, CA?
The distance between Santa Ana (Orange County John Wayne Airport) and Helena (Helena Regional Airport) is 944 miles / 1520 kilometers / 821 nautical miles.
The driving distance from Santa Ana (SNA) to Helena (HLN) is 1169 miles / 1882 kilometers, and travel time by car is about 19 hours 41 minutes.
Orange County John Wayne Airport – Helena Regional Airport
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Distance from Santa Ana to Helena
There are several ways to calculate the distance from Santa Ana to Helena. Here are two standard methods:
Vincenty's formula (applied above)- 944.343 miles
- 1519.772 kilometers
- 820.611 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- 945.281 miles
- 1521.282 kilometers
- 821.427 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 Santa Ana to Helena?
The estimated flight time from Orange County John Wayne Airport to Helena Regional Airport is 2 hours and 17 minutes.
What is the time difference between Santa Ana and Helena?
The time difference between Santa Ana and Helena is 1 hour. Helena is 1 hour ahead of Santa Ana.
Flight carbon footprint between Orange County John Wayne Airport (SNA) and Helena Regional Airport (HLN)
On average, flying from Santa Ana to Helena generates about 147 kg of CO2 per passenger, and 147 kilograms equals 324 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path and driving directions from Santa Ana to Helena
See the map of the shortest flight path between Orange County John Wayne Airport (SNA) and Helena Regional Airport (HLN).
Airport information
| Origin | Orange County John Wayne Airport |
|---|---|
| City: | Santa Ana, CA |
| Country: | United States  |
| IATA Code: | SNA |
| ICAO Code: | KSNA |
| Coordinates: | 33°40′32″N, 117°52′4″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 |