Nonstop flight route between Union Island, Saint Vincent and the Grenadines and Madison, South Dakota, United States:
Departure Airport:

Arrival Airport:

Distance from UNI to XMD:
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- About this route
- UNI Airport Information
- XMD Airport Information
- Facts about UNI
- Facts about XMD
- 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 XMD
- List of Nearest Airports to XMD
- Map of Furthest Airports from XMD
- List of Furthest Airports from XMD
About this route:
A direct, nonstop flight between Union Island Airport (UNI), Union Island, Saint Vincent and the Grenadines and Madison Municipal Airport (XMD), Madison, South Dakota, United States would travel a Great Circle distance of 3,027 miles (or 4,871 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 Madison Municipal 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 Madison Municipal 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: | XMD / KMDS |
Airport Names: |
|
Location: | Madison, South Dakota, United States |
GPS Coordinates: | 44°0'59"N by 97°5'8"W |
Area Served: | Madison, South Dakota |
Operator/Owner: | City of Madison |
Airport Type: | Public |
Elevation: | 1718 feet (524 meters) |
# of Runways: | 2 |
View all routes: | Routes from XMD |
More Information: | XMD 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.
- 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.
- The closest airport to Union Island Airport (UNI) is Canouan Airport (CIW), which is located only 8 miles (14 kilometers) NE of UNI.
Facts about Madison Municipal Airport (XMD):
- The closest airport to Madison Municipal Airport (XMD) is Brookings Regional Airport (BKX), which is located 24 miles (39 kilometers) NNE of XMD.
- Madison Municipal Airport is a city-owned public use airport located one nautical mile northeast of the central business district of Madison, a city in Lake County, South Dakota, United States.
- The furthest airport from Madison Municipal Airport (XMD) is Margaret River Airport (MGV), which is located 10,587 miles (17,039 kilometers) away in Margaret River, Western Australia, Australia.
- In addition to being known as "Madison Municipal Airport", another name for XMD is "MDS".
- Madison Municipal Airport (XMD) has 2 runways.