How far is Fort Smith from Helena, MT?

The distance between Helena (Helena Regional Airport) and Fort Smith (Fort Smith Airport) is 928 miles / 1493 kilometers / 806 nautical miles.

The driving distance from Helena (HLN) to Fort Smith (YSM) is 1092 miles / 1758 kilometers, and travel time by car is about 25 hours 42 minutes.

Distance from Helena to Fort Smith

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

Vincenty's formula (applied above)

• 927.582 miles
• 1492.799 kilometers
• 806.047 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

• 926.785 miles
• 1491.516 kilometers
• 805.354 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 Fort Smith?

The estimated flight time from Helena Regional Airport to Fort Smith Airport is 2 hours and 15 minutes.

What is the time difference between Helena and Fort Smith?

There is no time difference between Helena and Fort Smith.

Flight carbon footprint between Helena Regional Airport (HLN) and Fort Smith Airport (YSM)

On average, flying from Helena to Fort Smith generates about 146 kg of CO2 per passenger, and 146 kilograms equals 321 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 Fort Smith

See the map of the shortest flight path between Helena Regional Airport (HLN) and Fort Smith Airport (YSM).

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	Fort Smith Airport
City:	Fort Smith
Country:	Canada
IATA Code:	YSM
ICAO Code:	CYSM
Coordinates:	60°1′13″N, 111°57′43″W