Nonstop flight route between Sault Ste. Marie, Michigan, United States and Charlotte Amalie, Saint Thomas, U.S. Virgin Islands:
Departure Airport:

Arrival Airport:

Distance from INR to SPB:
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- About this route
- INR Airport Information
- SPB Airport Information
- Facts about INR
- Facts about SPB
- Map of Nearest Airports to INR
- List of Nearest Airports to INR
- Map of Furthest Airports from INR
- List of Furthest Airports from INR
- Map of Nearest Airports to SPB
- List of Nearest Airports to SPB
- Map of Furthest Airports from SPB
- List of Furthest Airports from SPB
About this route:
A direct, nonstop flight between Kincheloe Air Force Base (INR), Sault Ste. Marie, Michigan, United States and Charlotte Amalie Harbor Seaplane Base (SPB), Charlotte Amalie, Saint Thomas, U.S. Virgin Islands would travel a Great Circle distance of 2,227 miles (or 3,584 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 relatively short distance between Kincheloe Air Force Base and Charlotte Amalie Harbor Seaplane Base, the route shown on this map most likely still appears to be a straight line.
Departure Airport Information:
IATA / ICAO Codes: | INR / |
Airport Name: | Kincheloe Air Force Base |
Location: | Sault Ste. Marie, Michigan, United States |
GPS Coordinates: | 46°15'2"N by 84°28'20"W |
View all routes: | Routes from INR |
More Information: | INR Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | SPB / |
Airport Names: |
|
Location: | Charlotte Amalie, Saint Thomas, U.S. Virgin Islands |
GPS Coordinates: | 18°20'18"N by 64°56'26"W |
Operator/Owner: | Virgin Islands Port Authority |
Airport Type: | Private |
Elevation: | 0 feet (0 meters) |
# of Runways: | 2 |
View all routes: | Routes from SPB |
More Information: | SPB Maps & Info |
Facts about Kincheloe Air Force Base (INR):
- On 2 February 1959, Strategic Air Command established the 4239th Strategic Wing at Kincheloe AFB, Michigan as part of SAC's plan to disburse its B-52 Stratofortress heavy bombers over a larger number of bases, thus making it more difficult for the Soviet Union to knock out the entire fleet with a surprise first strike.
- In November, 1961, following two years of construction, the 4239th Strategic Wing of the Strategic Air Command arrived with B-52 bombers.
- The closest airport to Kincheloe Air Force Base (INR) is Chippewa County International Airport (CIU), which is located only 0 mile (0 kilometer) N of INR.
- Kinross was considered a vital Air Defense Command base, an alert-status military base equipped with interceptors ready 24/7 to respond to unknown aircraft picked up by Ground Control Radar stations in the Great Lakes region.
- In 1962, in order to retain the lineage of its MAJCOM 4-digit combat units and to perpetuate the lineage of many currently inactive bombardment units with illustrious World War II records, Headquarters SAC received authority from Headquarters USAF to discontinue its MAJCOM strategic wings that were equipped with combat aircraft and to activate AFCON units, most of which were inactive at the time which could carry a lineage and history.
- The furthest airport from Kincheloe Air Force Base (INR) is Margaret River Airport (MGV), which is located 11,103 miles (17,869 kilometers) away in Margaret River, Western Australia, Australia.
- During World War II, the Soo Locks were considered vital to the war efforts.
- Next, Kincheloe AFB was assigned to the Sault Sainte Marie Air Defense Sector at K.
- On 16 February 1953, the first operational ADC unit, the 534th Air Defense Group was activated at Kinross AFB.
Facts about Charlotte Amalie Harbor Seaplane Base (SPB):
- Because of Charlotte Amalie Harbor Seaplane Base's relatively low elevation of 0 feet, planes can take off or land at Charlotte Amalie Harbor Seaplane Base 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.
- In addition to being known as "Charlotte Amalie Harbor Seaplane Base", other names for SPB include "St. Thomas Seaplane Base" and "VI22".
- Charlotte Amalie Harbor Seaplane Base (SPB) has 2 runways.
- The closest airport to Charlotte Amalie Harbor Seaplane Base (SPB) is Cyril E. King Airport (STT), which is located only 2 miles (3 kilometers) W of SPB.
- The furthest airport from Charlotte Amalie Harbor Seaplane Base (SPB) is Barrow Island Airport (BWB), which is nearly antipodal to Charlotte Amalie Harbor Seaplane Base (meaning Charlotte Amalie Harbor Seaplane Base is almost on the exact opposite side of the Earth from Barrow Island Airport), and is located 12,261 miles (19,732 kilometers) away in Barrow Island, Western Australia, Australia.