Nonstop flight route between Ruislip, England, United Kingdom and Union Island, Saint Vincent and the Grenadines:
Departure Airport:

Arrival Airport:

Distance from NHT to UNI:
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- About this route
- NHT Airport Information
- UNI Airport Information
- Facts about NHT
- Facts about UNI
- Map of Nearest Airports to NHT
- List of Nearest Airports to NHT
- Map of Furthest Airports from NHT
- List of Furthest Airports from NHT
- Map of Nearest Airports to UNI
- List of Nearest Airports to UNI
- Map of Furthest Airports from UNI
- List of Furthest Airports from UNI
About this route:
A direct, nonstop flight between RAF Northolt (NHT), Ruislip, England, United Kingdom and Union Island Airport (UNI), Union Island, Saint Vincent and the Grenadines would travel a Great Circle distance of 4,304 miles (or 6,926 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 RAF Northolt and Union Island 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 RAF Northolt and Union Island Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
IATA / ICAO Codes: | NHT / EGWU |
Airport Name: | RAF Northolt |
Location: | Ruislip, England, United Kingdom |
GPS Coordinates: | 51°33'11"N by 0°25'5"W |
Operator/Owner: | Ministry of Defence |
View all routes: | Routes from NHT |
More Information: | NHT Maps & Info |
Arrival 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 |
Facts about RAF Northolt (NHT):
- The closest airport to RAF Northolt (NHT) is London Heathrow Airport (LHR), which is located only 6 miles (9 kilometers) SSW of NHT.
- The remains of a Hawker Hurricane flown by Flying Officer Ludwik Witold Paszkiewicz, the first pilot in No. 303 Squadron to shoot down an enemy aircraft, were donated to the station in June 2008.
- During 1952 a total of 50,000 air movements were recorded per annum, making the airfield the busiest in Europe.
- Northolt became an active base during the Second World War for Royal Air Force and Polish Air Force squadrons in their defence of the United Kingdom.
- The furthest airport from RAF Northolt (NHT) is Chatham Islands (CHT), which is located 11,871 miles (19,105 kilometers) away in Waitangi, Chatham Islands, New Zealand.
Facts about Union Island Airport (UNI):
- 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.
- 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.