How far is Great Falls, MT, from Perth?

The distance between Perth (Perth Airport) and Great Falls (Great Falls International Airport) is 9749 miles / 15689 kilometers / 8471 nautical miles.

Distance from Perth to Great Falls

There are several ways to calculate the distance from Perth to Great Falls. Here are two standard methods:

Vincenty's formula (applied above)

• 9748.760 miles
• 15689.109 kilometers
• 8471.441 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

• 9751.205 miles
• 15693.043 kilometers
• 8473.566 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 Perth to Great Falls?

The estimated flight time from Perth Airport to Great Falls International Airport is 18 hours and 57 minutes.

What is the time difference between Perth and Great Falls?

The time difference between Perth and Great Falls is 15 hours. Great Falls is 15 hours behind Perth.

Flight carbon footprint between Perth Airport (PER) and Great Falls International Airport (GTF)

On average, flying from Perth to Great Falls generates about 1 262 kg of CO2 per passenger, and 1 262 kilograms equals 2 783 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path from Perth to Great Falls

See the map of the shortest flight path between Perth Airport (PER) and Great Falls International Airport (GTF).

Airport information

Origin	Perth Airport
City:	Perth
Country:	Australia
IATA Code:	PER
ICAO Code:	YPPH
Coordinates:	31°56′25″S, 115°58′1″E

Destination	Great Falls International Airport
City:	Great Falls, MT
Country:	United States
IATA Code:	GTF
ICAO Code:	KGTF
Coordinates:	47°28′55″N, 111°22′15″W