How far is Green Bay, WI, from Helena, MT?
The distance between Helena (Helena Regional Airport) and Green Bay (Green Bay–Austin Straubel International Airport) is 1162 miles / 1870 kilometers / 1010 nautical miles.
The driving distance from Helena (HLN) to Green Bay (GRB) is 1337 miles / 2151 kilometers, and travel time by car is about 23 hours 59 minutes.
Helena Regional Airport – Green Bay–Austin Straubel International Airport
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Distance from Helena to Green Bay
There are several ways to calculate the distance from Helena to Green Bay. Here are two standard methods:
Vincenty's formula (applied above)- 1162.211 miles
- 1870.398 kilometers
- 1009.934 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- 1158.992 miles
- 1865.217 kilometers
- 1007.137 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 Green Bay?
The estimated flight time from Helena Regional Airport to Green Bay–Austin Straubel International Airport is 2 hours and 42 minutes.
What is the time difference between Helena and Green Bay?
The time difference between Helena and Green Bay is 1 hour. Green Bay is 1 hour ahead of Helena.
Flight carbon footprint between Helena Regional Airport (HLN) and Green Bay–Austin Straubel International Airport (GRB)
On average, flying from Helena to Green Bay generates about 160 kg of CO2 per passenger, and 160 kilograms equals 352 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 Green Bay
See the map of the shortest flight path between Helena Regional Airport (HLN) and Green Bay–Austin Straubel International Airport (GRB).
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 | Green Bay–Austin Straubel International Airport |
|---|---|
| City: | Green Bay, WI |
| Country: | United States |
| IATA Code: | GRB |
| ICAO Code: | KGRB |
| Coordinates: | 44°29′6″N, 88°7′46″W |