Nonstop flight route between Fort Sill, Oklahoma, United States and Greater Sudbury, Ontario, Canada:
Departure Airport:

Arrival Airport:

Distance from FSI to YSB:
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- About this route
- FSI Airport Information
- YSB Airport Information
- Facts about FSI
- Facts about YSB
- 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 YSB
- List of Nearest Airports to YSB
- Map of Furthest Airports from YSB
- List of Furthest Airports from YSB
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Sudbury Airport (YSB), Greater Sudbury, Ontario, Canada would travel a Great Circle distance of 1,234 miles (or 1,987 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 Sudbury 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: | YSB / CYSB |
Airport Name: | Sudbury Airport |
Location: | Greater Sudbury, Ontario, Canada |
GPS Coordinates: | 46°37'32"N by 80°47'52"W |
Area Served: | Greater Sudbury, Ontario |
Airport Type: | Public |
Elevation: | 1143 feet (348 meters) |
# of Runways: | 2 |
View all routes: | Routes from YSB |
More Information: | YSB Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- 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.
- 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.
- 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.
- Henry Post AAF has one runway designated 17/35 with a concrete surface measuring 5,001 by 200 feet.
- 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.
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- Although the Signal corps had been supplying Observation aircraft for the United States Army Field Artillery School since 1915.
- 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.
Facts about Sudbury Airport (YSB):
- The furthest airport from Sudbury Airport (YSB) is Margaret River Airport (MGV), which is located 11,228 miles (18,070 kilometers) away in Margaret River, Western Australia, Australia.
- The airport is served primarily by regional carrier lines such as Air Canada Jazz, Bearskin Airlines and Porter Airlines.
- The closest airport to Sudbury Airport (YSB) is North Bay Airport (YYB), which is located 68 miles (109 kilometers) ESE of YSB.
- From 1972 to 2000, Sudbury Airport was owned by the Federal Government and operated by the transportation department of Sudbury.
- Sudbury Airport (YSB) has 2 runways.