Nonstop flight route between Fort Sill, Oklahoma, United States and between Baltimore, Maryland and Washington, D.C., United States:
Departure Airport:

Arrival Airport:

Distance from FSI to BWI:
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- About this route
- FSI Airport Information
- BWI Airport Information
- Facts about FSI
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- Map of Furthest Airports from FSI
- List of Furthest Airports from FSI
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About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Baltimore/Washington International Thurgood Marshall Airport (BWI), between Baltimore, Maryland and Washington, D.C., United States would travel a Great Circle distance of 1,237 miles (or 1,991 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 Baltimore/Washington International Thurgood Marshall 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: | BWI / KBWI |
Airport Name: | Baltimore/Washington International Thurgood Marshall Airport |
Location: | between Baltimore, Maryland and Washington, D.C., United States |
GPS Coordinates: | 39°10'31"N by 76°40'5"W |
Area Served: | Baltimore–Washington Metropolitan Area |
Operator/Owner: | Maryland Aviation Administration |
Airport Type: | Public |
Elevation: | 146 feet (45 meters) |
# of Runways: | 4 |
View all routes: | Routes from BWI |
More Information: | BWI Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- After returning from combat duty in France, a cadre of the 135th Aero Squadron ) was assigned to Post Field as an observation squadron, supplying aircraft for the United States Army Field Artillery School at Fort Sill and supported Army units at Fort Leavenworth, Kansas.
- 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 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.
- Although the Signal corps had been supplying Observation aircraft for the United States Army Field Artillery School since 1915.
- The field was named in honor of pioneer aviator 2d Lieutenant Henry Post.
- 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.
Facts about Baltimore/Washington International Thurgood Marshall Airport (BWI):
- The closest airport to Baltimore/Washington International Thurgood Marshall Airport (BWI) is Tipton Airport (FME), which is located only 8 miles (13 kilometers) SW of BWI.
- Currently improvements are being made to widen concourse C.
- Baltimore/Washington International Thurgood Marshall Airport has five concourses, though Concourses A and B were essentially merged into a single concourse in the renovations completed in 2005.
- Baltimore/Washington International Thurgood Marshall Airport (BWI) has 4 runways.
- Because of Baltimore/Washington International Thurgood Marshall Airport's relatively low elevation of 146 feet, planes can take off or land at Baltimore/Washington International Thurgood Marshall 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 Baltimore/Washington International Thurgood Marshall Airport (BWI) is Margaret River Airport (MGV), which is located 11,691 miles (18,814 kilometers) away in Margaret River, Western Australia, Australia.
- Baltimore/Washington International Thurgood Marshall Airport handled 22,391,785 passengers last year.
- On July 12, 2013, BWI Airport and the Maryland Aviation Administration launched a 3-year $125 million construction project.
- The passenger terminal renovation program was complete in 1979, the most dramatic work of the airport's modernization, which was designed by DMJM along with Peterson & Brickbauer.
- BWI is a focus city for Southwest Airlines, and is the busiest airport in the Baltimore–Washington Metropolitan Area.