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How far is Union Island from Santa Maria Island?

The distance between Santa Maria Island (Santa Maria Airport) and Union Island (Union Island Airport) is 2800 miles / 4506 kilometers / 2433 nautical miles.

Santa Maria Airport – Union Island Airport

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2800
Miles
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4506
Kilometers
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2433
Nautical miles

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Distance from Santa Maria Island to Union Island

There are several ways to calculate the distance from Santa Maria Island to Union Island. Here are two standard methods:

Vincenty's formula (applied above)
  • 2799.788 miles
  • 4505.823 kilometers
  • 2432.950 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
  • 2800.475 miles
  • 4506.928 kilometers
  • 2433.546 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 Santa Maria Island to Union Island?

The estimated flight time from Santa Maria Airport to Union Island Airport is 5 hours and 48 minutes.

Flight carbon footprint between Santa Maria Airport (SMA) and Union Island Airport (UNI)

On average, flying from Santa Maria Island to Union Island generates about 310 kg of CO2 per passenger, and 310 kilograms equals 684 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path from Santa Maria Island to Union Island

See the map of the shortest flight path between Santa Maria Airport (SMA) and Union Island Airport (UNI).

Airport information

Origin Santa Maria Airport
City: Santa Maria Island
Country: Portugal Flag of Portugal
IATA Code: SMA
ICAO Code: LPAZ
Coordinates: 36°58′17″N, 25°10′14″W
Destination Union Island Airport
City: Union Island
Country: Saint Vincent and the Grenadines Flag of Saint Vincent and the Grenadines
IATA Code: UNI
ICAO Code: TVSU
Coordinates: 12°36′0″N, 61°24′43″W