KFSI · Henry Post Army Air Field

FORT SILL, OKLAHOMA · MEDIUM AIRPORT

1,189

Elevation ft

Runway

5,002

Longest ft · 18/36

34.65N

98.40W

Henry Post Army Air Field serves Fort Sill, Oklahoma at 1,189 ft elevation with its longest runway, 18/36, at 5,002 by 150 ft. The figures below are computed from FAA NASR runway data (via OurAirports) and the same rules of thumb JetDesk uses on the airport page in the app; the POH and current NOTAMs are the authority.

Military airfield. This is a military airfield in the FAA file. It is listed here for reference and for emergency planning. Civil use needs prior permission, there is no FBO, and no Jet A you can buy. Do not plan it as a fuel stop or a routine alternate.

Open KFSI in JetDesk: live METAR, TAF, winds and runway verdict →

01Runways

Runway	Length × width	Surface	Lighting
18/36	5,002 × 150 ft	concrete	lit

02Density altitude and turboprop runway margins

Standard temperature at 1,189 ft is about 13°C. Every 1,000 ft of density altitude adds roughly 8 percent to a turboprop's takeoff distance and 5 percent to its landing distance. The table uses Piper Meridian book numbers (2,438 ft takeoff and 2,110 ft landing over a 50 ft obstacle at sea level, ISA, max weight) as a reference airplane; heavier turboprops and light jets scale the same way from their own POH figures.

Conditions	Density altitude	Takeoff est.	Landing est.	Landing × 1.5
Standard day (ISA, 13°C)	1,189 ft	2,670 ft	2,235 ft	3,353 ft
Warm day (ISA +10)	2,389 ft	2,904 ft	2,362 ft	3,543 ft
Hot day (ISA +20)	3,589 ft	3,138 ft	2,489 ft	3,733 ft
35°C afternoon	3,874 ft	3,194 ft	2,519 ft	3,778 ft

Planning aid only. Even on a 35°C afternoon the longest runway (18/36, 5,002 ft) covers a Meridian-class turboprop's landing distance with a 50 percent margin (3,778 ft needed). The percentages are a generic rule of thumb applied to one reference airplane, not certified performance data for any specific aircraft, and the runway size categories describe the runway, not your airplane's suitability. Verify with the approved flight manual before every flight.

03Nearby fields with 5,000 ft or more

Listed for reference only: KFSI is not a field to divert to or buy fuel at.

Airport	Distance	Longest runway
KLAW Lawton Fort Sill Regional Airport	5 nm S	8,599 ft
KDUC Halliburton Field	24 nm SE	6,650 ft
KCHK Chickasha Municipal Airport	34 nm NE	5,101 ft
KHBR Hobart Regional Airport	38 nm NW	5,507 ft

04Fuel and services at KFSI

There is no public FBO fuel to log at KFSI. JetDesk collects Jet A prices that pilots actually paid, at civil fields, and its route finder leaves military and private-use fields out of every ranking. Read what a fuel stop actually saves.

All Oklahoma airports · Airport directory · Open JetDesk