Nonstop flight route between Canton Island, Kiribati and Fort Sill, Oklahoma, United States:
Departure Airport:

Arrival Airport:

Distance from CIS to FSI:
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- About this route
- CIS Airport Information
- FSI Airport Information
- Facts about CIS
- Facts about FSI
- Map of Nearest Airports to CIS
- List of Nearest Airports to CIS
- Map of Furthest Airports from CIS
- List of Furthest Airports from CIS
- Map of Nearest Airports to FSI
- List of Nearest Airports to FSI
- Map of Furthest Airports from FSI
- List of Furthest Airports from FSI
About this route:
A direct, nonstop flight between Canton Island Airport (CIS), Canton Island, Kiribati and Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States would travel a Great Circle distance of 5,386 miles (or 8,669 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 Canton Island Airport and Henry Post Army Airfield, 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 Canton Island Airport and Henry Post Army Airfield. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
IATA / ICAO Codes: | CIS / PCIS |
Airport Name: | Canton Island Airport |
Location: | Canton Island, Kiribati |
GPS Coordinates: | 2°46'9"S by 171°42'19"W |
Elevation: | 9 feet (3 meters) |
# of Runways: | 1 |
View all routes: | Routes from CIS |
More Information: | CIS Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | FSI / KFSI |
Airport Name: | Henry Post Army Airfield |
Location: | Fort Sill, Oklahoma, United States |
GPS Coordinates: | 34°38'58"N by 98°24'7"W |
Operator/Owner: | U.S. Army ATCA-ASO |
Airport Type: | Military |
Elevation: | 1189 feet (362 meters) |
# of Runways: | 1 |
View all routes: | Routes from FSI |
More Information: | FSI Maps & Info |
Facts about Canton Island Airport (CIS):
- During World War II, Kanton Island was considered part of the British-controlled Gilbert and Ellice Islands colony.
- The closest airport to Canton Island Airport (CIS) is Funafuti International Airport (FUN), which is located 741 miles (1,193 kilometers) WSW of CIS.
- Though Kanton Island was never physically invaded by Japanese forces, the airfield was bombarded on 1 November 1943 by the Japanese submarine I-36.
- The furthest airport from Canton Island Airport (CIS) is Malabo International Airport (SSG), which is nearly antipodal to Canton Island Airport (meaning Canton Island Airport is almost on the exact opposite side of the Earth from Malabo International Airport), and is located 12,363 miles (19,896 kilometers) away in Malabo, Equatorial Guinea.
- Canton Island Airport (CIS) currently has only 1 runway.
- Because of Canton Island Airport's relatively low elevation of 9 feet, planes can take off or land at Canton 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.
Facts about Henry Post Army Airfield (FSI):
- The Fort Sill Army Radar Approach Control is the Army's Second busiest Air Traffic Control Facility, providing Radar Approach Control service to Henry Post Army Air Field, Lawton/Fort Sill Regional Airport, Duncan/Haliburton Airport and many smaller airports in the area.
- The closest airport to Henry Post Army Airfield (FSI) is Lawton–Fort Sill Regional Airport (LAW), which is located only 6 miles (9 kilometers) S of FSI.
- By the late 1920s, the World War I tarpaper buildings were rotting and turning into fire hazards.
- Fort Sill has embarked on a new plan to support the museum in providing a more dynamic learning experience for the 200,000 military and civilian personnel who visit each year.
- The furthest airport from Henry Post Army Airfield (FSI) is Sir Gaëtan Duval Airport (RRG), which is located 10,920 miles (17,575 kilometers) away in Rodrigues Island, Mauritius.
- With the sudden end of World War I in November 1918, the future operational status of Post Field was unknown.
- The field was named in honor of pioneer aviator 2d Lieutenant Henry Post.
- Henry Post Army Airfield was the first home of all Army Aviation Training after World War II before moving to Fort Rucker, Alabama in 1954.
- Henry Post Army Airfield (FSI) currently has only 1 runway.