Nonstop flight route between Union Island, Saint Vincent and the Grenadines and Sayaboury, Laos:
Departure Airport:
 
    Arrival Airport:
 
    Distance from UNI to ZBY:
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- About this route
- UNI Airport Information
- ZBY Airport Information
- Facts about UNI
- Facts about ZBY
- Map of Nearest Airports to UNI
- List of Nearest Airports to UNI
- Map of Furthest Airports from UNI
- List of Furthest Airports from UNI
- Map of Nearest Airports to ZBY
- List of Nearest Airports to ZBY
- Map of Furthest Airports from ZBY
- List of Furthest Airports from ZBY
About this route:
A direct, nonstop flight between Union Island Airport (UNI), Union Island, Saint Vincent and the Grenadines and Sayaboury Airport (ZBY), Sayaboury, Laos would travel a Great Circle distance of 9,956 miles (or 16,023 kilometers).
A Great Circle is the shortest distance between 2 points on a sphere. Because most world maps are flat (but the Earth is round), the route of the shortest distance between 2 points on the Earth will often appear curved when viewed on a flat map, especially for long distances. If you were to simply draw a straight line on a flat map and measure a very long distance, it would likely be much further than if you were to lay a string between those two points on a globe. Because of the large distance between Union Island Airport and Sayaboury Airport, the route shown on this map most likely appears curved because of this reason.
Try it at home! Get a globe and tightly lay a string between Union Island Airport and Sayaboury Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
| IATA / ICAO Codes: | UNI / TVSU | 
| Airport Name: | Union Island Airport | 
| Location: | Union Island, Saint Vincent and the Grenadines | 
| GPS Coordinates: | 12°35'54"N by 61°24'52"W | 
| Area Served: | Union Island | 
| Airport Type: | Public | 
| Elevation: | 14 feet (4 meters) | 
| # of Runways: | 1 | 
| View all routes: | Routes from UNI | 
| More Information: | UNI Maps & Info | 
Arrival Airport Information:
| IATA / ICAO Codes: | ZBY / VLSB | 
| Airport Name: | Sayaboury Airport | 
| Location: | Sayaboury, Laos | 
| GPS Coordinates: | 19°13'58"N by 101°43'58"E | 
| Elevation: | 0 feet (0 meters) | 
| View all routes: | Routes from ZBY | 
| More Information: | ZBY Maps & Info | 
Facts about Union Island Airport (UNI):
- The furthest airport from Union Island Airport (UNI) is Umbu Mehang Kunda Airport (WGP), which is nearly antipodal to Union Island Airport (meaning Union Island Airport is almost on the exact opposite side of the Earth from Umbu Mehang Kunda Airport), and is located 12,203 miles (19,639 kilometers) away in Waingapu, Sumba, East Nusa Tenggara, Indonesia.
- The closest airport to Union Island Airport (UNI) is Canouan Airport (CIW), which is located only 8 miles (14 kilometers) NE of UNI.
- Because of Union Island Airport's relatively low elevation of 14 feet, planes can take off or land at Union Island Airport at a lower air speed than at airports located at a higher elevation. This is because the air density is higher closer to sea level than it would otherwise be at higher elevations.
- Union Island Airport (UNI) currently has only 1 runway.
Facts about Sayaboury Airport (ZBY):
- The furthest airport from Sayaboury Airport (ZBY) is Maria Reiche Neuman Airport (NZC), which is nearly antipodal to Sayaboury Airport (meaning Sayaboury Airport is almost on the exact opposite side of the Earth from Maria Reiche Neuman Airport), and is located 12,064 miles (19,415 kilometers) away in Nazca, Ica Region, Peru.
- Because of Sayaboury Airport's relatively low elevation of 0 feet, planes can take off or land at Sayaboury Airport at a lower air speed than at airports located at a higher elevation. This is because the air density is higher closer to sea level than it would otherwise be at higher elevations.
- The closest airport to Sayaboury Airport (ZBY) is Luang Prabang International Airport (LPQ), which is located 54 miles (86 kilometers) NNE of ZBY.




