How far is Helena, MT, from Clyde River?

The distance between Clyde River (Clyde River Airport) and Helena (Helena Regional Airport) is 2191 miles / 3525 kilometers / 1904 nautical miles.

Distance from Clyde River to Helena

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

Vincenty's formula (applied above)

• 2190.617 miles
• 3525.456 kilometers
• 1903.594 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

• 2185.283 miles
• 3516.872 kilometers
• 1898.959 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 Clyde River to Helena?

The estimated flight time from Clyde River Airport to Helena Regional Airport is 4 hours and 38 minutes.

What is the time difference between Clyde River and Helena?

The time difference between Clyde River and Helena is 2 hours. Helena is 2 hours behind Clyde River.

Flight carbon footprint between Clyde River Airport (YCY) and Helena Regional Airport (HLN)

On average, flying from Clyde River to Helena generates about 239 kg of CO2 per passenger, and 239 kilograms equals 528 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path from Clyde River to Helena

See the map of the shortest flight path between Clyde River Airport (YCY) and Helena Regional Airport (HLN).

Airport information

Origin	Clyde River Airport
City:	Clyde River
Country:	Canada
IATA Code:	YCY
ICAO Code:	CYCY
Coordinates:	70°29′9″N, 68°31′0″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