How far is Santa Ana, CA, from Helena, MT?
The distance between Helena (Helena Regional Airport) and Santa Ana (Orange County John Wayne Airport) is 944 miles / 1520 kilometers / 821 nautical miles.
The driving distance from Helena (HLN) to Santa Ana (SNA) is 1170 miles / 1883 kilometers, and travel time by car is about 19 hours 46 minutes.
Helena Regional Airport – Orange County John Wayne Airport
Search flights
Distance from Helena to Santa Ana
There are several ways to calculate the distance from Helena to Santa Ana. 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 Helena to Santa Ana?
The estimated flight time from Helena Regional Airport to Orange County John Wayne Airport is 2 hours and 17 minutes.
What is the time difference between Helena and Santa Ana?
The time difference between Helena and Santa Ana is 1 hour. Santa Ana is 1 hour behind Helena.
Flight carbon footprint between Helena Regional Airport (HLN) and Orange County John Wayne Airport (SNA)
On average, flying from Helena to Santa Ana 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 Helena to Santa Ana
See the map of the shortest flight path between Helena Regional Airport (HLN) and Orange County John Wayne Airport (SNA).
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 | 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 |