How far is Helena, MT, from Napoli?

The distance between Napoli (Naples International Airport) and Helena (Helena Regional Airport) is 5563 miles / 8953 kilometers / 4834 nautical miles.

Distance from Napoli to Helena

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

Vincenty's formula (applied above)

• 5563.330 miles
• 8953.312 kilometers
• 4834.402 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

• 5548.771 miles
• 8929.881 kilometers
• 4821.750 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 Napoli to Helena?

The estimated flight time from Naples International Airport to Helena Regional Airport is 11 hours and 1 minutes.

What is the time difference between Napoli and Helena?

The time difference between Napoli and Helena is 8 hours. Helena is 8 hours behind Napoli.

Flight carbon footprint between Naples International Airport (NAP) and Helena Regional Airport (HLN)

On average, flying from Napoli to Helena generates about 658 kg of CO2 per passenger, and 658 kilograms equals 1 451 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path from Napoli to Helena

See the map of the shortest flight path between Naples International Airport (NAP) and Helena Regional Airport (HLN).

Airport information

Origin	Naples International Airport
City:	Napoli
Country:	Italy
IATA Code:	NAP
ICAO Code:	LIRN
Coordinates:	40°53′9″N, 14°17′26″E

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