How far is Union Island from Houston, TX?
The distance between Houston (Houston George Bush Intercontinental Airport) and Union Island (Union Island Airport) is 2479 miles / 3989 kilometers / 2154 nautical miles.
Houston George Bush Intercontinental Airport – Union Island Airport
Search flights
Distance from Houston to Union Island
There are several ways to calculate the distance from Houston to Union Island. Here are two standard methods:
Vincenty's formula (applied above)- 2478.645 miles
- 3988.993 kilometers
- 2153.884 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- 2478.107 miles
- 3988.126 kilometers
- 2153.416 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 Houston to Union Island?
The estimated flight time from Houston George Bush Intercontinental Airport to Union Island Airport is 5 hours and 11 minutes.
What is the time difference between Houston and Union Island?
Flight carbon footprint between Houston George Bush Intercontinental Airport (IAH) and Union Island Airport (UNI)
On average, flying from Houston to Union Island generates about 273 kg of CO2 per passenger, and 273 kilograms equals 601 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path from Houston to Union Island
See the map of the shortest flight path between Houston George Bush Intercontinental Airport (IAH) and Union Island Airport (UNI).
Airport information
| Origin | Houston George Bush Intercontinental Airport |
|---|---|
| City: | Houston, TX |
| Country: | United States  |
| IATA Code: | IAH |
| ICAO Code: | KIAH |
| Coordinates: | 29°59′3″N, 95°20′29″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 |