Air Miles Calculator

Distance between Watertown, NY (ART) and Helena, MT (HLN)

Flight distance from Watertown to Helena (Watertown International Airport – Helena Regional Airport) is 1747 miles / 2811 kilometers / 1518 nautical miles. Estimated flight time is 3 hours 48 minutes.

Driving distance from Watertown (ART) to Helena (HLN) is 2097 miles / 3374 kilometers and travel time by car is about 37 hours 16 minutes.

Map of flight path and driving directions from Watertown to Helena.

Shortest flight path between Watertown International Airport (ART) and Helena Regional Airport (HLN).

How far is Helena from Watertown?

There are several ways to calculate distances between Watertown and Helena. Here are two common 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 earth.

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).

Airport information


A 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

B 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

Time difference and current local times

The time difference between Watertown and Helena is 2 hours. Helena is 2 hours behind Watertown.

Time Difference

Watertown, NY

 EDT

Helena, MT

 MDT

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 196 kg (432 pounds).

Frequent Flyer Miles Calculator

Watertown (ART) → Helena (HLN).

Distance:
1747
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
1747

Round trip?