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

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

The driving distance from Helena (HLN) to Yakima (YKM) is 519 miles / 836 kilometers, and travel time by car is about 9 hours 25 minutes.

Distance from Helena to Yakima

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

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

What is the time difference between Helena and Yakima?

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

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

On average, flying from Helena to Yakima 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 Helena to Yakima

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

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	Yakima Air Terminal
City:	Yakima, WA
Country:	United States
IATA Code:	YKM
ICAO Code:	KYKM
Coordinates:	46°34′5″N, 120°32′38″W