How far is Cape Girardeau, MO, from Helena, MT?
The distance between Helena (Helena Regional Airport) and Cape Girardeau (Cape Girardeau Regional Airport) is 1318 miles / 2121 kilometers / 1145 nautical miles.
The driving distance from Helena (HLN) to Cape Girardeau (CGI) is 1614 miles / 2597 kilometers, and travel time by car is about 28 hours 54 minutes.
Helena Regional Airport – Cape Girardeau Regional Airport
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Distance from Helena to Cape Girardeau
There are several ways to calculate the distance from Helena to Cape Girardeau. Here are two standard methods:
Vincenty's formula (applied above)- 1317.623 miles
- 2120.509 kilometers
- 1144.984 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- 1315.374 miles
- 2116.890 kilometers
- 1143.029 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 Cape Girardeau?
The estimated flight time from Helena Regional Airport to Cape Girardeau Regional Airport is 2 hours and 59 minutes.
What is the time difference between Helena and Cape Girardeau?
Flight carbon footprint between Helena Regional Airport (HLN) and Cape Girardeau Regional Airport (CGI)
On average, flying from Helena to Cape Girardeau generates about 168 kg of CO2 per passenger, and 168 kilograms equals 370 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 Cape Girardeau
See the map of the shortest flight path between Helena Regional Airport (HLN) and Cape Girardeau Regional Airport (CGI).
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 | Cape Girardeau Regional Airport |
|---|---|
| City: | Cape Girardeau, MO |
| Country: | United States |
| IATA Code: | CGI |
| ICAO Code: | KCGI |
| Coordinates: | 37°13′31″N, 89°34′14″W |