Nonstop flight route between Fort Sill, Oklahoma, United States and Marshall, Minnesota, United States:
Departure Airport:

Arrival Airport:

Distance from FSI to MML:
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- About this route
- FSI Airport Information
- MML Airport Information
- Facts about FSI
- Facts about MML
- 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 MML
- List of Nearest Airports to MML
- Map of Furthest Airports from MML
- List of Furthest Airports from MML
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Southwest Minnesota Regional Airport (MML), Marshall, Minnesota, United States would travel a Great Circle distance of 691 miles (or 1,112 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 Henry Post Army Airfield and Southwest Minnesota Regional Airport, the route shown on this map most likely still appears to be a straight line.
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: | MML / KMML |
Airport Name: | Southwest Minnesota Regional Airport |
Location: | Marshall, Minnesota, United States |
GPS Coordinates: | 44°27'1"N by 95°49'18"W |
Operator/Owner: | City Of Marshall |
Airport Type: | Public |
Elevation: | 1180 feet (360 meters) |
# of Runways: | 2 |
View all routes: | Routes from MML |
More Information: | MML Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- 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 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.
- 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 field was named in honor of pioneer aviator 2d Lieutenant Henry Post.
- There are no air units currently stationed at the airfield, however air operations for transient units are provided by permanent party personnel.
- 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.
Facts about Southwest Minnesota Regional Airport (MML):
- The closest airport to Southwest Minnesota Regional Airport (MML) is Montevideo-Chippewa County Airport (MVE), which is located 36 miles (59 kilometers) N of MML.
- As of August 2010, there are 28 aircraft based on the field.
- Midwest Aviation provides fixed-based operations
- Southwest Minnesota Regional Airport (MML) has 2 runways.
- The furthest airport from Southwest Minnesota Regional Airport (MML) is Margaret River Airport (MGV), which is located 10,642 miles (17,127 kilometers) away in Margaret River, Western Australia, Australia.