Nonstop flight route between Fort Sill, Oklahoma, United States and Yap, Federated States of Micronesia:
Departure Airport:

Arrival Airport:

Distance from FSI to YAP:
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- About this route
- FSI Airport Information
- YAP Airport Information
- Facts about FSI
- Facts about YAP
- Map of Nearest Airports to FSI
- List of Nearest Airports to FSI
- Map of Furthest Airports from FSI
- List of Furthest Airports from FSI
- Map of Nearest Airports to YAP
- List of Nearest Airports to YAP
- Map of Furthest Airports from YAP
- List of Furthest Airports from YAP
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Yap International Airport (YAP), Yap, Federated States of Micronesia would travel a Great Circle distance of 7,652 miles (or 12,314 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 Henry Post Army Airfield and Yap International 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 Henry Post Army Airfield and Yap International Airport. You'll see that it will travel the same route of the red line on this map!
Departure 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 |
Arrival Airport Information:
IATA / ICAO Codes: | YAP / PTYA |
Airport Names: |
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Location: | Yap, Federated States of Micronesia |
GPS Coordinates: | 9°29'56"N by 138°4'57"E |
Operator/Owner: | Civil government |
Airport Type: | Public |
Elevation: | 91 feet (28 meters) |
# of Runways: | 1 |
View all routes: | Routes from YAP |
More Information: | YAP Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- The first Army aviation at Fort Sill began on 26 July 1915 when eight Curtiss JN-3 airplanes of the 1st Aero Squadron arrived from Rockwell Field, California.
- Henry Post Army Airfield is a military use airport located at Fort Sill in Comanche County, Oklahoma, United States.
- There are no air units currently stationed at the airfield, however air operations for transient units are provided by permanent party personnel.
- With the end of World War I, in October 1919 Post Field was deactivated as an active duty airfield in accordance with sharply reduced military budgets, and a small caretaker unit was assigned to the facility for administrative reasons to support the balloon school/company.
- 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.
- 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.
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- In 1940 the Artillery decided that the Air Corps had outgrown such mundane chores as artillery spotting, and it was decided that it would take care of itself with its own observation aircraft.
- As a result of the United State's entry into World War I, Fort Sill was selected for a primary pilot school.
Facts about Yap International Airport (YAP):
- In addition to being known as "Yap International Airport", another name for YAP is "T11".
- The closest airport to Yap International Airport (YAP) is Falalop Airfield (ULI), which is located 122 miles (196 kilometers) ENE of YAP.
- The furthest airport from Yap International Airport (YAP) is Petrolina–Senador Nilo Coelho Airport (PNZ), which is nearly antipodal to Yap International Airport (meaning Yap International Airport is almost on the exact opposite side of the Earth from Petrolina–Senador Nilo Coelho Airport), and is located 12,346 miles (19,869 kilometers) away in Petrolina, Pernambuco, Brazil.
- Because of Yap International Airport's relatively low elevation of 91 feet, planes can take off or land at Yap International 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.
- Yap International Airport (YAP) currently has only 1 runway.