How far is Union Island from San Francisco, CA?
The distance between San Francisco (San Francisco International Airport) and Union Island (Union Island Airport) is 4110 miles / 6615 kilometers / 3572 nautical miles.
San Francisco International Airport – Union Island Airport
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Distance from San Francisco to Union Island
There are several ways to calculate the distance from San Francisco to Union Island. Here are two standard methods:
Vincenty's formula (applied above)- 4110.473 miles
- 6615.165 kilometers
- 3571.903 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- 4107.297 miles
- 6610.055 kilometers
- 3569.144 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 Francisco to Union Island?
The estimated flight time from San Francisco International Airport to Union Island Airport is 8 hours and 16 minutes.
What is the time difference between San Francisco and Union Island?
Flight carbon footprint between San Francisco International Airport (SFO) and Union Island Airport (UNI)
On average, flying from San Francisco to Union Island generates about 470 kg of CO2 per passenger, and 470 kilograms equals 1 037 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path from San Francisco to Union Island
See the map of the shortest flight path between San Francisco International Airport (SFO) and Union Island Airport (UNI).
Airport information
| Origin | San Francisco International Airport |
|---|---|
| City: | San Francisco, CA |
| Country: | United States  |
| IATA Code: | SFO |
| ICAO Code: | KSFO |
| Coordinates: | 37°37′8″N, 122°22′30″W |
| Destination | Union Island Airport |
|---|---|
| City: | Union Island |
| Country: | Saint Vincent and the Grenadines  |
| IATA Code: | UNI |
| ICAO Code: | TVSU |
| Coordinates: | 12°36′0″N, 61°24′43″W |