How far is Helena, MT, from San Juan?

The distance between San Juan (San Juan Luis Muñoz Marín International Airport) and Helena (Helena Regional Airport) is 3245 miles / 5222 kilometers / 2820 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)

• 3244.722 miles
• 5221.874 kilometers
• 2819.586 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

• 3243.452 miles
• 5219.829 kilometers
• 2818.482 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 San Juan Luis Muñoz Marín International 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 San Juan Luis Muñoz Marín International Airport (SJU) and Helena Regional Airport (HLN)

On average, flying from San Juan to Helena generates about 364 kg of CO2 per passenger, and 364 kilograms equals 802 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 San Juan Luis Muñoz Marín International Airport (SJU) and Helena Regional Airport (HLN).

Airport information

Origin	San Juan Luis Muñoz Marín International Airport
City:	San Juan
Country:	Puerto Rico
IATA Code:	SJU
ICAO Code:	TJSJ
Coordinates:	18°26′21″N, 66°0′6″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