Nonstop flight route between Fort Sill, Oklahoma, United States and Eday, Scotland, United Kingdom:
Departure Airport:

Arrival Airport:

Distance from FSI to EOI:
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- About this route
- FSI Airport Information
- EOI Airport Information
- Facts about FSI
- Facts about EOI
- 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 EOI
- List of Nearest Airports to EOI
- Map of Furthest Airports from EOI
- List of Furthest Airports from EOI
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Eday Airport (EOI), Eday, Scotland, United Kingdom would travel a Great Circle distance of 4,384 miles (or 7,055 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 Eday 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 Eday 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: | EOI / EGED |
Airport Names: |
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Location: | Eday, Scotland, United Kingdom |
GPS Coordinates: | 59°11'26"N by 2°46'19"W |
Area Served: | Eday |
Operator/Owner: | Orkney Islands Council |
Airport Type: | Public |
Elevation: | 20 feet (6 meters) |
# of Runways: | 2 |
View all routes: | Routes from EOI |
More Information: | EOI Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- The field was named in honor of pioneer aviator 2d Lieutenant Henry Post.
- 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.
- Henry Post AAF has one runway designated 17/35 with a concrete surface measuring 5,001 by 200 feet.
- With the sudden end of World War I in November 1918, the future operational status of Post Field was unknown.
- After returning from combat duty in France, a cadre of the 135th Aero Squadron ) was assigned to Post Field as an observation squadron, supplying aircraft for the United States Army Field Artillery School at Fort Sill and supported Army units at Fort Leavenworth, Kansas.
- 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.
- There are no air units currently stationed at the airfield, however air operations for transient units are provided by permanent party personnel.
Facts about Eday Airport (EOI):
- The furthest airport from Eday Airport (EOI) is Ryan's Creek Aerodrome (SZS), which is located 11,509 miles (18,522 kilometers) away in Stewart Island, New Zealand.
- Because of Eday Airport's relatively low elevation of 20 feet, planes can take off or land at Eday 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.
- Eday Airport (EOI) has 2 runways.
- In addition to being known as "Eday Airport", another name for EOI is "London Airport".
- The closest airport to Eday Airport (EOI) is Stronsay Airport (SOY), which is located only 5 miles (8 kilometers) ESE of EOI.