Air Miles Calculator

Distance between St John's (ANU) and Union Island (UNI)

Flight distance from St John's to Union Island (V. C. Bird International Airport – Union Island Airport) is 313 miles / 504 kilometers / 272 nautical miles. Estimated flight time is 1 hour 5 minutes.

Map of flight path from St John's to Union Island.

Shortest flight path between V. C. Bird International Airport (ANU) and Union Island Airport (UNI).

How far is Union Island from St John's?

There are several ways to calculate distances between St John's and Union Island. Here are two common methods:

Vincenty's formula (applied above)
  • 312.941 miles
  • 503.630 kilometers
  • 271.939 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
  • 314.476 miles
  • 506.100 kilometers
  • 273.272 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).

Airport information


A V. C. Bird International Airport
City: St John's
Country: Antigua and Barbuda Flag of Antigua and Barbuda
IATA Code: ANU
ICAO Code: TAPA
Coordinates: 17°8′12″N, 61°47′33″W

B 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

Time difference and current local times

There is no time difference between St John's and Union Island.

Time Difference

St John's

 AST

Union Island

 AST

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 71 kg (157 pounds).

Frequent Flyer Miles Calculator

St John's (ANU) → Union Island (UNI).

Distance:
313
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
313

Round trip?