Nonstop flight route between Fort Sill, Oklahoma, United States and Denver, Colorado, United States:
Departure Airport:

Arrival Airport:

Distance from FSI to DEN:
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- About this route
- FSI Airport Information
- DEN Airport Information
- Facts about FSI
- Facts about DEN
- 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 DEN
- List of Nearest Airports to DEN
- Map of Furthest Airports from DEN
- List of Furthest Airports from DEN
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Denver International Airport (DEN), Denver, Colorado, United States would travel a Great Circle distance of 498 miles (or 802 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 Denver International 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: | DEN / KDEN |
Airport Name: | Denver International Airport |
Location: | Denver, Colorado, United States |
GPS Coordinates: | 39°51'42"N by 104°40'23"W |
Area Served: | Denver, Front Range Megalopolis, Northern Colorado, Eastern Colorado |
Operator/Owner: | City & County of Denver Department of Aviation |
Airport Type: | Public |
Elevation: | 5431 feet (1,655 meters) |
# of Runways: | 6 |
View all routes: | Routes from DEN |
More Information: | DEN Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- 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.
- Air Service/Corps units assigned to Post Field between 1919 and 1941
- 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.
- Post Field served as a base for flight training for the Air Service.
- 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.
- 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.
Facts about Denver International Airport (DEN):
- After the airport's runways were completed but before it opened, the airport used the codes.
- Denver International Airport (DEN) has 6 runways.
- The airport's computerized baggage system, which was supposed to reduce delays, shorten waiting times at luggage carousels, and cut airline labor costs, was an unmitigated failure.
- The furthest airport from Denver International Airport (DEN) is Sir Gaëtan Duval Airport (RRG), which is located 10,877 miles (17,505 kilometers) away in Rodrigues Island, Mauritius.
- Denver International Airport is the main hub for low-cost carrier Frontier Airlines and commuter carrier Great Lakes Airlines.
- Denver International Airport handled 52,556,359 passengers last year.
- All international flights requiring customs and immigration services currently fly into Concourse A.
- The closest airport to Denver International Airport (DEN) is Centennial Airport (APA), which is located 22 miles (36 kilometers) SSW of DEN.
- From 1980 to 1983, the Denver Regional Council of Governments investigated six areas for a new metro area airport which were north and east of Denver.
- Because of Denver International Airport's high elevation of 5,431 feet, planes must typically fly at a faster airspeed in order to takeoff or land at DEN. Combined with a high temperature, this could make DEN a "Hot & High" airport, where the air density is lower than it would otherwise be at sea level.
- Both during construction and after its opening Denver International Airport has set aside a portion of its construction and operation budgets for art.