Nonstop flight route between Marco Island, Florida, United States and Fort Sill, Oklahoma, United States:
Departure Airport:

Arrival Airport:

Distance from MRK to FSI:
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- About this route
- MRK Airport Information
- FSI Airport Information
- Facts about MRK
- Facts about FSI
- Map of Nearest Airports to MRK
- List of Nearest Airports to MRK
- Map of Furthest Airports from MRK
- List of Furthest Airports from MRK
- 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 Marco Island Airport (MRK), Marco Island, Florida, United States and Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States would travel a Great Circle distance of 1,161 miles (or 1,868 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 Marco Island Airport and Henry Post Army Airfield, the route shown on this map most likely still appears to be a straight line.
Departure Airport Information:
IATA / ICAO Codes: | MRK / KMKY |
Airport Names: |
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Location: | Marco Island, Florida, United States |
GPS Coordinates: | 25°59'42"N by 81°40'20"W |
Area Served: | Marco Island, Florida |
Operator/Owner: | Collier County Arpt. Auth. |
Airport Type: | Public |
Elevation: | 5 feet (2 meters) |
# of Runways: | 1 |
View all routes: | Routes from MRK |
More Information: | MRK 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 Marco Island Airport (MRK):
- Marco Island Airport (MRK) currently has only 1 runway.
- The closest airport to Marco Island Airport (MRK) is Naples Municipal Airport (APF), which is located only 13 miles (20 kilometers) NNW of MRK.
- The furthest airport from Marco Island Airport (MRK) is Shark Bay Airport (MJK), which is located 11,490 miles (18,491 kilometers) away in Monkey Mia, Western Australia, Australia.
- In addition to being known as "Marco Island Airport", other names for MRK include "Marco Island Executive Airport" and "MKY".
- Because of Marco Island Airport's relatively low elevation of 5 feet, planes can take off or land at Marco 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 field was named in honor of pioneer aviator 2d Lieutenant Henry Post.
- 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.
- By the late 1920s, the World War I tarpaper buildings were rotting and turning into fire hazards.
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- 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.
- Post Field served as a base for flight training for the Air Service.