# Distance between Port of Spain (POS) and Union Island (UNI)

Flight distance from Port of Spain to Union Island (Piarco International Airport – Union Island Airport) is 138 miles / 222 kilometers / 120 nautical miles. Estimated flight time is 45 minutes.

138
Miles
222
Kilometers
120
Nautical miles

## How far is Union Island from Port of Spain?

There are several ways to calculate distances between Los Angeles and Chicago. Here are two common methods:

Vincenty's formula (applied above)
• 137.890 miles
• 221.912 kilometers
• 119.823 nautical miles

Vincenty's formula calculates the distance between latitude/longitude points on the earth’s surface, using an ellipsoidal model of the earth.

Haversine formula
• 138.606 miles
• 223.065 kilometers
• 120.446 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 Port of Spain to Union Island?

Estimated flight time from Piarco International Airport to Union Island Airport is 45 minutes.

## What is the time difference between Port of Spain and Union Island?

There is no time difference between Port of Spain and Union Island.

## Flight carbon footprint between Piarco International Airport (POS) and Union Island Airport (UNI)

On average flying from Port of Spain to Union Island generates about 45 kg of CO2 per passenger, 45 kilograms is equal to 100 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

## Map of flight path from Port of Spain to Union Island

Shortest flight path between Piarco International Airport (POS) and Union Island Airport (UNI).

## Airport information

Origin Piarco International Airport
City: Port of Spain