How far is Helena, MT, from Stephenville?
The distance between Stephenville (Stephenville International Airport) and Helena (Helena Regional Airport) is 2450 miles / 3943 kilometers / 2129 nautical miles.
The driving distance from Stephenville (YJT) to Helena (HLN) is 3971 miles / 6391 kilometers, and travel time by car is about 85 hours 40 minutes.
Stephenville International Airport – Helena Regional Airport
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Distance from Stephenville to Helena
There are several ways to calculate the distance from Stephenville to Helena. Here are two standard methods:
Vincenty's formula (applied above)- 2450.050 miles
- 3942.973 kilometers
- 2129.035 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- 2442.873 miles
- 3931.423 kilometers
- 2122.799 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 Stephenville to Helena?
The estimated flight time from Stephenville International Airport to Helena Regional Airport is 5 hours and 8 minutes.
What is the time difference between Stephenville and Helena?
Flight carbon footprint between Stephenville International Airport (YJT) and Helena Regional Airport (HLN)
On average, flying from Stephenville to Helena generates about 269 kg of CO2 per passenger, and 269 kilograms equals 594 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path and driving directions from Stephenville to Helena
See the map of the shortest flight path between Stephenville International Airport (YJT) and Helena Regional Airport (HLN).
Airport information
| Origin | Stephenville International Airport |
|---|---|
| City: | Stephenville |
| Country: | Canada  |
| IATA Code: | YJT |
| ICAO Code: | CYJT |
| Coordinates: | 48°32′39″N, 58°32′59″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 |