How far is Helena, MT, from San Juan?

The distance between San Juan (Fernando Luis Ribas Dominicci Airport) and Helena (Helena Regional Airport) is 3240 miles / 5214 kilometers / 2815 nautical miles.

Distance from San Juan to Helena

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

Vincenty's formula (applied above)

• 3239.559 miles
• 5213.565 kilometers
• 2815.100 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

• 3238.299 miles
• 5211.537 kilometers
• 2814.005 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 San Juan to Helena?

The estimated flight time from Fernando Luis Ribas Dominicci Airport to Helena Regional Airport is 6 hours and 38 minutes.

What is the time difference between San Juan and Helena?

The time difference between San Juan and Helena is 3 hours. Helena is 3 hours behind San Juan.

Flight carbon footprint between Fernando Luis Ribas Dominicci Airport (SIG) and Helena Regional Airport (HLN)

On average, flying from San Juan to Helena generates about 363 kg of CO2 per passenger, and 363 kilograms equals 800 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path from San Juan to Helena

See the map of the shortest flight path between Fernando Luis Ribas Dominicci Airport (SIG) and Helena Regional Airport (HLN).

Airport information

Origin	Fernando Luis Ribas Dominicci Airport
City:	San Juan
Country:	Puerto Rico
IATA Code:	SIG
ICAO Code:	TJIG
Coordinates:	18°27′24″N, 66°5′53″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