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How far is Cat Lake from Helena, MT?

The distance between Helena (Helena Regional Airport) and Cat Lake (Cat Lake Airport) is 976 miles / 1570 kilometers / 848 nautical miles.

The driving distance from Helena (HLN) to Cat Lake (YAC) is 1300 miles / 2092 kilometers, and travel time by car is about 30 hours 26 minutes.

Helena Regional Airport – Cat Lake Airport

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976
Miles
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1570
Kilometers
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848
Nautical miles

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Distance from Helena to Cat Lake

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

Vincenty's formula (applied above)
  • 975.664 miles
  • 1570.180 kilometers
  • 847.829 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
  • 973.077 miles
  • 1566.015 kilometers
  • 845.580 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 Cat Lake?

The estimated flight time from Helena Regional Airport to Cat Lake Airport is 2 hours and 20 minutes.

Flight carbon footprint between Helena Regional Airport (HLN) and Cat Lake Airport (YAC)

On average, flying from Helena to Cat Lake generates about 149 kg of CO2 per passenger, and 149 kilograms equals 329 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 Cat Lake

See the map of the shortest flight path between Helena Regional Airport (HLN) and Cat Lake Airport (YAC).

Airport information

Origin Helena Regional Airport
City: Helena, MT
Country: United States Flag of United States
IATA Code: HLN
ICAO Code: KHLN
Coordinates: 46°36′24″N, 111°58′58″W
Destination Cat Lake Airport
City: Cat Lake
Country: Canada Flag of Canada
IATA Code: YAC
ICAO Code: CYAC
Coordinates: 51°43′37″N, 91°49′27″W