How far is Helena, MT, from Washington D.C.?
The distance between Washington D.C. (Ronald Reagan Washington National Airport) and Helena (Helena Regional Airport) is 1840 miles / 2961 kilometers / 1599 nautical miles.
The driving distance from Washington D.C. (DCA) to Helena (HLN) is 2167 miles / 3487 kilometers, and travel time by car is about 39 hours 20 minutes.
Ronald Reagan Washington National Airport – Helena Regional Airport
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Distance from Washington D.C. to Helena
There are several ways to calculate the distance from Washington D.C. to Helena. Here are two standard methods:
Vincenty's formula (applied above)- 1840.105 miles
- 2961.363 kilometers
- 1599.008 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- 1835.788 miles
- 2954.414 kilometers
- 1595.256 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 Washington D.C. to Helena?
The estimated flight time from Ronald Reagan Washington National Airport to Helena Regional Airport is 3 hours and 59 minutes.
What is the time difference between Washington D.C. and Helena?
Flight carbon footprint between Ronald Reagan Washington National Airport (DCA) and Helena Regional Airport (HLN)
On average, flying from Washington D.C. to Helena generates about 203 kg of CO2 per passenger, and 203 kilograms equals 448 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path and driving directions from Washington D.C. to Helena
See the map of the shortest flight path between Ronald Reagan Washington National Airport (DCA) and Helena Regional Airport (HLN).
Airport information
| Origin | Ronald Reagan Washington National Airport |
|---|---|
| City: | Washington D.C. |
| Country: | United States  |
| IATA Code: | DCA |
| ICAO Code: | KDCA |
| Coordinates: | 38°51′7″N, 77°2′15″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 |