How far is Helena, MT, from Cape Girardeau, MO?
The distance between Cape Girardeau (Cape Girardeau Regional Airport) and Helena (Helena Regional Airport) is 1318 miles / 2121 kilometers / 1145 nautical miles.
The driving distance from Cape Girardeau (CGI) to Helena (HLN) is 1611 miles / 2592 kilometers, and travel time by car is about 28 hours 50 minutes.
Cape Girardeau Regional Airport – Helena Regional Airport
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Distance from Cape Girardeau to Helena
There are several ways to calculate the distance from Cape Girardeau to Helena. 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 Cape Girardeau to Helena?
The estimated flight time from Cape Girardeau Regional Airport to Helena Regional Airport is 2 hours and 59 minutes.
What is the time difference between Cape Girardeau and Helena?
Flight carbon footprint between Cape Girardeau Regional Airport (CGI) and Helena Regional Airport (HLN)
On average, flying from Cape Girardeau to Helena 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 Cape Girardeau to Helena
See the map of the shortest flight path between Cape Girardeau Regional Airport (CGI) and Helena Regional Airport (HLN).
Airport information
| Origin | 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 |
| 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 |