How far is Helena, MT, from Sydney?
The distance between Sydney (Sydney/J.A. Douglas McCurdy Airport) and Helena (Helena Regional Airport) is 2437 miles / 3921 kilometers / 2117 nautical miles.
The driving distance from Sydney (YQY) to Helena (HLN) is 3072 miles / 4944 kilometers, and travel time by car is about 59 hours 32 minutes.
Sydney/J.A. Douglas McCurdy Airport – Helena Regional Airport
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Distance from Sydney to Helena
There are several ways to calculate the distance from Sydney to Helena. Here are two standard methods:
Vincenty's formula (applied above)- 2436.562 miles
- 3921.267 kilometers
- 2117.315 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- 2429.572 miles
- 3910.018 kilometers
- 2111.241 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 Sydney to Helena?
The estimated flight time from Sydney/J.A. Douglas McCurdy Airport to Helena Regional Airport is 5 hours and 6 minutes.
What is the time difference between Sydney and Helena?
The time difference between Sydney and Helena is 3 hours. Helena is 3 hours behind Sydney.
Flight carbon footprint between Sydney/J.A. Douglas McCurdy Airport (YQY) and Helena Regional Airport (HLN)
On average, flying from Sydney to Helena generates about 268 kg of CO2 per passenger, and 268 kilograms equals 590 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path and driving directions from Sydney to Helena
See the map of the shortest flight path between Sydney/J.A. Douglas McCurdy Airport (YQY) and Helena Regional Airport (HLN).
Airport information
| Origin | Sydney/J.A. Douglas McCurdy Airport |
|---|---|
| City: | Sydney |
| Country: | Canada  |
| IATA Code: | YQY |
| ICAO Code: | CYQY |
| Coordinates: | 46°9′41″N, 60°2′52″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 |