How far is Helena, MT, from Huron, SD?

The distance between Huron (Huron Regional Airport) and Helena (Helena Regional Airport) is 684 miles / 1102 kilometers / 595 nautical miles.

The driving distance from Huron (HON) to Helena (HLN) is 823 miles / 1324 kilometers, and travel time by car is about 15 hours 15 minutes.

Distance from Huron to Helena

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

Vincenty's formula (applied above)

• 684.463 miles
• 1101.537 kilometers
• 594.783 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

• 682.648 miles
• 1098.615 kilometers
• 593.204 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 Huron to Helena?

The estimated flight time from Huron Regional Airport to Helena Regional Airport is 1 hour and 47 minutes.

What is the time difference between Huron and Helena?

The time difference between Huron and Helena is 1 hour. Helena is 1 hour behind Huron.

Flight carbon footprint between Huron Regional Airport (HON) and Helena Regional Airport (HLN)

On average, flying from Huron to Helena generates about 123 kg of CO2 per passenger, and 123 kilograms equals 271 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path and driving directions from Huron to Helena

See the map of the shortest flight path between Huron Regional Airport (HON) and Helena Regional Airport (HLN).

Airport information

Origin	Huron Regional Airport
City:	Huron, SD
Country:	United States
IATA Code:	HON
ICAO Code:	KHON
Coordinates:	44°23′6″N, 98°13′42″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