Nonstop flight route between Kirkwall, Orkney Islands, United Kingdom and Rapid City, South Dakota, United States:
Departure Airport:

Arrival Airport:

Distance from KOI to RCA:
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- About this route
- KOI Airport Information
- RCA Airport Information
- Facts about KOI
- Facts about RCA
- Map of Nearest Airports to KOI
- List of Nearest Airports to KOI
- Map of Furthest Airports from KOI
- List of Furthest Airports from KOI
- Map of Nearest Airports to RCA
- List of Nearest Airports to RCA
- Map of Furthest Airports from RCA
- List of Furthest Airports from RCA
About this route:
A direct, nonstop flight between Kirkwall Airport (KOI), Kirkwall, Orkney Islands, United Kingdom and Ellsworth Air Force Base (RCA), Rapid City, South Dakota, United States would travel a Great Circle distance of 4,001 miles (or 6,438 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 Kirkwall Airport and Ellsworth Air Force Base, 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 Kirkwall Airport and Ellsworth Air Force Base. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
IATA / ICAO Codes: | KOI / EGPA |
Airport Name: | Kirkwall Airport |
Location: | Kirkwall, Orkney Islands, United Kingdom |
GPS Coordinates: | 58°57'29"N by 2°54'2"W |
Area Served: | Mainland, Orkney |
Operator/Owner: | Highlands and Islands Airports Limited |
Airport Type: | Public |
Elevation: | 58 feet (18 meters) |
# of Runways: | 2 |
View all routes: | Routes from KOI |
More Information: | KOI Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | RCA / KRCA |
Airport Names: |
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Location: | Rapid City, South Dakota, United States |
GPS Coordinates: | 44°8'47"N by 103°4'28"W |
View all routes: | Routes from RCA |
More Information: | RCA Maps & Info |
Facts about Kirkwall Airport (KOI):
- Kirkwall Airport handled 145,897 passengers last year.
- Kirkwall Airport (KOI) has 2 runways.
- Because of Kirkwall Airport's relatively low elevation of 58 feet, planes can take off or land at Kirkwall 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 Kirkwall Airport (KOI) is Stronsay Airport (SOY), which is located only 16 miles (26 kilometers) NE of KOI.
- The furthest airport from Kirkwall Airport (KOI) is Ryan's Creek Aerodrome (SZS), which is located 11,525 miles (18,548 kilometers) away in Stewart Island, New Zealand.
Facts about Ellsworth Air Force Base (RCA):
- The 740th AC&W Squadron began operations in 1955 with AN/MPS-7 search radar, and initially the station functioned as a Ground-Control Intercept and warning station.
- The furthest airport from Ellsworth Air Force Base (RCA) is Sir Gaëtan Duval Airport (RRG), which is located 10,579 miles (17,026 kilometers) away in Rodrigues Island, Mauritius.
- In addition to being known as "Ellsworth Air Force Base", another name for RCA is "Ellsworth AFB".
- The closest airport to Ellsworth Air Force Base (RCA) is Rapid City Regional Airport (RAP), which is located only 7 miles (11 kilometers) S of RCA.
- In March 1944, heavy bomber operational training ended and the 225th Army Air Force Base Unit began training of replacement personnel for deployed heavy bombardment units in the overseas combat theaters.
- To provide air defense of the base, the United States Army established the Ellsworth AFB Defense Area in 1957 and constructed Nike-Ajax Surface-to-air missile sites for air defense.
- An Army Air-Defense Command Post was established at Ellsworth in 1960 for Nike missile command-and-control functions.
- On 1 June 1971, SAC deactivated the 821st Strategic Aerospace Division and by October of that year, an upgraded LGM-30F Minuteman II also replaced the Minuteman I missiles.