How far is Helena, MT, from Rome?

The distance between Rome (Leonardo da Vinci–Fiumicino Airport) and Helena (Helena Regional Airport) is 5451 miles / 8772 kilometers / 4737 nautical miles.

Distance from Rome to Helena

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

Vincenty's formula (applied above)

• 5450.757 miles
• 8772.144 kilometers
• 4736.579 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

• 5436.281 miles
• 8748.846 kilometers
• 4723.999 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 Rome to Helena?

The estimated flight time from Leonardo da Vinci–Fiumicino Airport to Helena Regional Airport is 10 hours and 49 minutes.

What is the time difference between Rome and Helena?

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

Flight carbon footprint between Leonardo da Vinci–Fiumicino Airport (FCO) and Helena Regional Airport (HLN)

On average, flying from Rome to Helena generates about 643 kg of CO2 per passenger, and 643 kilograms equals 1 418 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path from Rome to Helena

See the map of the shortest flight path between Leonardo da Vinci–Fiumicino Airport (FCO) and Helena Regional Airport (HLN).

Airport information

Origin	Leonardo da Vinci–Fiumicino Airport
City:	Rome
Country:	Italy
IATA Code:	FCO
ICAO Code:	LIRF
Coordinates:	41°48′16″N, 12°15′2″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