Nonstop flight route between Fort Sill, Oklahoma, United States and Helsinki / Malmi, Finland:
Departure Airport:

Arrival Airport:

Distance from FSI to HEM:
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- About this route
- FSI Airport Information
- HEM Airport Information
- Facts about FSI
- Facts about HEM
- 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 HEM
- List of Nearest Airports to HEM
- Map of Furthest Airports from HEM
- List of Furthest Airports from HEM
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Helsinki-Malmi Airport (HEM), Helsinki / Malmi, Finland would travel a Great Circle distance of 5,142 miles (or 8,274 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 Helsinki-Malmi 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 Helsinki-Malmi 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: | HEM / EFHF |
Airport Names: |
|
Location: | Helsinki / Malmi, Finland |
GPS Coordinates: | 60°15'14"N by 25°2'39"E |
Operator/Owner: | Finavia |
Airport Type: | Public |
Elevation: | 57 feet (17 meters) |
# of Runways: | 2 |
View all routes: | Routes from HEM |
More Information: | HEM Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- Air Service/Corps units assigned to Post Field between 1919 and 1941
- 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.
- 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.
- 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.
- 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.
- Although the Signal corps had been supplying Observation aircraft for the United States Army Field Artillery School since 1915.
- 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.
- As a result of the United State's entry into World War I, Fort Sill was selected for a primary pilot school.
Facts about Helsinki-Malmi Airport (HEM):
- Helsinki-Malmi Airport (HEM) has 2 runways.
- On 25 March 2014, the Finnish government made a framework decision in principle to close down Malmi Airport and hand it over to residential use by the early 2020s.
- Helsinki-Malmi Airport handled 50 passengers last year.
- The future of Malmi Airport is uncertain, as the City of Helsinki has plans for housing construction on the site.
- Because of Helsinki-Malmi Airport's relatively low elevation of 57 feet, planes can take off or land at Helsinki-Malmi 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.
- The furthest airport from Helsinki-Malmi Airport (HEM) is Chatham Islands (CHT), which is located 10,992 miles (17,691 kilometers) away in Waitangi, Chatham Islands, New Zealand.
- The Winter War interrupted civil aviation at Malmi, and the Airport was taken over by the Finnish Air Force.
- The closest airport to Helsinki-Malmi Airport (HEM) is Helsinki Airport (HEL), which is located only 5 miles (8 kilometers) NNW of HEM.
- In addition to being known as "Helsinki-Malmi Airport", another name for HEM is "Helsinki-Malmin lentoasemaHelsingfors-Malm flygplats".
- Helsinki-Malmi Airport was among the first in the world to be designed from the beginning as an international airport.