How far is Great Falls, MT, from Porto?

The distance between Porto (Porto Airport) and Great Falls (Great Falls International Airport) is 4712 miles / 7583 kilometers / 4095 nautical miles.

Distance from Porto to Great Falls

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

Vincenty's formula (applied above)

• 4712.130 miles
• 7583.438 kilometers
• 4094.729 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

• 4699.478 miles
• 7563.077 kilometers
• 4083.735 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 Porto to Great Falls?

The estimated flight time from Porto Airport to Great Falls International Airport is 9 hours and 25 minutes.

What is the time difference between Porto and Great Falls?

The time difference between Porto and Great Falls is 6 hours. Great Falls is 6 hours behind Porto.

Flight carbon footprint between Porto Airport (OPO) and Great Falls International Airport (GTF)

On average, flying from Porto to Great Falls generates about 547 kg of CO2 per passenger, and 547 kilograms equals 1 205 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path from Porto to Great Falls

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

Airport information

Origin	Porto Airport
City:	Porto
Country:	Portugal
IATA Code:	OPO
ICAO Code:	LPPR
Coordinates:	41°14′53″N, 8°40′53″W

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