How far is Helena, MT, from Belfast?

The distance between Belfast (Belfast International Airport) and Helena (Helena Regional Airport) is 4228 miles / 6804 kilometers / 3674 nautical miles.

Distance from Belfast to Helena

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

Vincenty's formula (applied above)

• 4227.789 miles
• 6803.967 kilometers
• 3673.848 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

• 4214.953 miles
• 6783.309 kilometers
• 3662.694 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 Belfast to Helena?

The estimated flight time from Belfast International Airport to Helena Regional Airport is 8 hours and 30 minutes.

What is the time difference between Belfast and Helena?

The time difference between Belfast and Helena is 7 hours. Helena is 7 hours behind Belfast.

Flight carbon footprint between Belfast International Airport (BFS) and Helena Regional Airport (HLN)

On average, flying from Belfast to Helena generates about 485 kg of CO2 per passenger, and 485 kilograms equals 1 069 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path from Belfast to Helena

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

Airport information

Origin	Belfast International Airport
City:	Belfast
Country:	United Kingdom
IATA Code:	BFS
ICAO Code:	EGAA
Coordinates:	54°39′27″N, 6°12′56″W

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