How far is Waterloo, IA, from Helena, MT?
The distance between Helena (Helena Regional Airport) and Waterloo (Waterloo Regional Airport) is 1003 miles / 1614 kilometers / 872 nautical miles.
The driving distance from Helena (HLN) to Waterloo (ALO) is 1194 miles / 1921 kilometers, and travel time by car is about 21 hours 23 minutes.
Helena Regional Airport – Waterloo Regional Airport
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Distance from Helena to Waterloo
There are several ways to calculate the distance from Helena to Waterloo. Here are two standard methods:
Vincenty's formula (applied above)- 1003.016 miles
- 1614.198 kilometers
- 871.597 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- 1000.509 miles
- 1610.163 kilometers
- 869.418 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 Waterloo?
The estimated flight time from Helena Regional Airport to Waterloo Regional Airport is 2 hours and 23 minutes.
What is the time difference between Helena and Waterloo?
The time difference between Helena and Waterloo is 1 hour. Waterloo is 1 hour ahead of Helena.
Flight carbon footprint between Helena Regional Airport (HLN) and Waterloo Regional Airport (ALO)
On average, flying from Helena to Waterloo generates about 151 kg of CO2 per passenger, and 151 kilograms equals 333 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 Waterloo
See the map of the shortest flight path between Helena Regional Airport (HLN) and Waterloo Regional Airport (ALO).
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 | Waterloo Regional Airport |
|---|---|
| City: | Waterloo, IA |
| Country: | United States |
| IATA Code: | ALO |
| ICAO Code: | KALO |
| Coordinates: | 42°33′25″N, 92°24′1″W |