How far is Helena, MT, from Yakima, WA?

The distance between Yakima (Yakima Air Terminal) and Helena (Helena Regional Airport) is 407 miles / 656 kilometers / 354 nautical miles.

The driving distance from Yakima (YKM) to Helena (HLN) is 518 miles / 833 kilometers, and travel time by car is about 9 hours 21 minutes.

Distance from Yakima to Helena

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

Vincenty's formula (applied above)

• 407.496 miles
• 655.801 kilometers
• 354.104 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

• 406.321 miles
• 653.910 kilometers
• 353.083 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 Yakima to Helena?

The estimated flight time from Yakima Air Terminal to Helena Regional Airport is 1 hour and 16 minutes.

What is the time difference between Yakima and Helena?

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

Flight carbon footprint between Yakima Air Terminal (YKM) and Helena Regional Airport (HLN)

On average, flying from Yakima to Helena generates about 85 kg of CO2 per passenger, and 85 kilograms equals 187 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path and driving directions from Yakima to Helena

See the map of the shortest flight path between Yakima Air Terminal (YKM) and Helena Regional Airport (HLN).

Airport information

Origin	Yakima Air Terminal
City:	Yakima, WA
Country:	United States
IATA Code:	YKM
ICAO Code:	KYKM
Coordinates:	46°34′5″N, 120°32′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