How far is Helena, MT, from Dryden?

The distance between Dryden (Dryden Regional Airport) and Helena (Helena Regional Airport) is 913 miles / 1469 kilometers / 793 nautical miles.

The driving distance from Dryden (YHD) to Helena (HLN) is 1213 miles / 1952 kilometers, and travel time by car is about 23 hours 0 minutes.

Distance from Dryden to Helena

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

Vincenty's formula (applied above)

• 913.033 miles
• 1469.385 kilometers
• 793.404 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

• 910.477 miles
• 1465.271 kilometers
• 791.183 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 Dryden to Helena?

The estimated flight time from Dryden Regional Airport to Helena Regional Airport is 2 hours and 13 minutes.

What is the time difference between Dryden and Helena?

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

Flight carbon footprint between Dryden Regional Airport (YHD) and Helena Regional Airport (HLN)

On average, flying from Dryden to Helena generates about 145 kg of CO2 per passenger, and 145 kilograms equals 319 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path and driving directions from Dryden to Helena

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

Airport information

Origin	Dryden Regional Airport
City:	Dryden
Country:	Canada
IATA Code:	YHD
ICAO Code:	CYHD
Coordinates:	49°49′54″N, 92°44′39″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