How far is Helena, MT, from Flagstaff, AZ?
The distance between Flagstaff (Flagstaff Pulliam Airport) and Helena (Helena Regional Airport) is 792 miles / 1274 kilometers / 688 nautical miles.
The driving distance from Flagstaff (FLG) to Helena (HLN) is 1006 miles / 1619 kilometers, and travel time by car is about 17 hours 39 minutes.
Flagstaff Pulliam Airport – Helena Regional Airport
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Distance from Flagstaff to Helena
There are several ways to calculate the distance from Flagstaff to Helena. Here are two standard methods:
Vincenty's formula (applied above)- 791.531 miles
- 1273.846 kilometers
- 687.822 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- 792.550 miles
- 1275.485 kilometers
- 688.707 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 Flagstaff to Helena?
The estimated flight time from Flagstaff Pulliam Airport to Helena Regional Airport is 1 hour and 59 minutes.
What is the time difference between Flagstaff and Helena?
The time difference between Flagstaff and Helena is 1 hour. Helena is 1 hour ahead of Flagstaff.
Flight carbon footprint between Flagstaff Pulliam Airport (FLG) and Helena Regional Airport (HLN)
On average, flying from Flagstaff to Helena generates about 134 kg of CO2 per passenger, and 134 kilograms equals 295 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path and driving directions from Flagstaff to Helena
See the map of the shortest flight path between Flagstaff Pulliam Airport (FLG) and Helena Regional Airport (HLN).
Airport information
| Origin | Flagstaff Pulliam Airport |
|---|---|
| City: | Flagstaff, AZ |
| Country: | United States  |
| IATA Code: | FLG |
| ICAO Code: | KFLG |
| Coordinates: | 35°8′18″N, 111°40′15″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 |