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How far is Watertown, NY, from Helena, MT?

The distance between Helena (Helena Regional Airport) and Watertown (Watertown International Airport) is 1747 miles / 2811 kilometers / 1518 nautical miles.

The driving distance from Helena (HLN) to Watertown (ART) is 2067 miles / 3326 kilometers, and travel time by car is about 39 hours 19 minutes.

Helena Regional Airport – Watertown International Airport

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1747
Miles
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2811
Kilometers
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1518
Nautical miles

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Distance from Helena to Watertown

There are several ways to calculate the distance from Helena to Watertown. Here are two standard methods:

Vincenty's formula (applied above)
  • 1746.613 miles
  • 2810.901 kilometers
  • 1517.765 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
  • 1741.772 miles
  • 2803.110 kilometers
  • 1513.559 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 Watertown?

The estimated flight time from Helena Regional Airport to Watertown International Airport is 3 hours and 48 minutes.

Flight carbon footprint between Helena Regional Airport (HLN) and Watertown International Airport (ART)

On average, flying from Helena to Watertown generates about 196 kg of CO2 per passenger, and 196 kilograms equals 432 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 Watertown

See the map of the shortest flight path between Helena Regional Airport (HLN) and Watertown International Airport (ART).

Airport information

Origin Helena Regional Airport
City: Helena, MT
Country: United States Flag of United States
IATA Code: HLN
ICAO Code: KHLN
Coordinates: 46°36′24″N, 111°58′58″W
Destination Watertown International Airport
City: Watertown, NY
Country: United States Flag of United States
IATA Code: ART
ICAO Code: KART
Coordinates: 43°59′30″N, 76°1′18″W