How far is Gillam from Helena, MT?

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

The driving distance from Helena (HLN) to Gillam (YGX) is 1379 miles / 2219 kilometers, and travel time by car is about 31 hours 38 minutes.

Distance from Helena to Gillam

There are several ways to calculate the distance from Helena to Gillam. 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 Helena to Gillam?

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

What is the time difference between Helena and Gillam?

The time difference between Helena and Gillam is 1 hour. Gillam is 1 hour ahead of Helena.

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

On average, flying from Helena to Gillam 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 Helena to Gillam

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

Airport information

Origin	Helena Regional Airport
City:	Helena, MT
Country:	United States
IATA Code:	HLN
ICAO Code:	KHLN
Coordinates:	46°36′24″N, 111°58′58″W

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