How far is Helena, MT, from Gillam?

The distance between Gillam (Gillam Airport) and Helena (Helena Regional Airport) is 1000 miles / 1609 kilometers / 869 nautical miles.

The driving distance from Gillam (YGX) to Helena (HLN) is 1379 miles / 2219 kilometers, and travel time by car is about 31 hours 33 minutes.

Distance from Gillam to Helena

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

Vincenty's formula (applied above)

• 999.985 miles
• 1609.320 kilometers
• 868.963 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

• 998.012 miles
• 1606.145 kilometers
• 867.249 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 Gillam to Helena?

The estimated flight time from Gillam Airport to Helena Regional Airport is 2 hours and 23 minutes.

What is the time difference between Gillam and Helena?

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

Flight carbon footprint between Gillam Airport (YGX) and Helena Regional Airport (HLN)

On average, flying from Gillam to Helena generates about 151 kg of CO2 per passenger, and 151 kilograms equals 332 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path and driving directions from Gillam to Helena

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

Airport information

Origin	Gillam Airport
City:	Gillam
Country:	Canada
IATA Code:	YGX
ICAO Code:	CYGX
Coordinates:	56°21′26″N, 94°42′38″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