Henry Post Aaf (fort Sill) Airport (KFSI), Oklahoma
Landing essentials
Whether you can land, whether you can refuel, and how customs works here.
Overview
Henry Post Army Airfield (KFSI) serves Fort Sill in southwestern Oklahoma as a private-use military field controlled by the Fort Sill Airfield Radar Approach Control (ARAC), which operates around the clock. The airfield sits within restricted special use airspace R5601, and any access outside routine military operations runs through Fort Sill Approach. A single concrete runway, 18/36, handles field traffic, and airfield management staffs limited hours on weekdays, leaving broader field condition monitoring unattended outside those windows. The nearest customs point of entry is Will Rogers World Airport (KOKC), roughly 60 nautical miles away, reflecting the field's restricted, non-civilian character.
Runways
Henry Post Aaf (fort Sill) Airport has one paved runway, 18/36, 5,002 ft long and 150 ft wide, with a concrete surface.
Runway geometry from published threshold coordinates. Not for navigation.
Source: FAA Form 5010.
Fuel and airfield services
The airport has an operating control tower.
Source: FAA Form 5010 / NASR.
Customs
Henry Post Aaf (fort Sill) Airport does not clear customs. The nearest port of entry is Okc Will Rogers International (KOKC), 60 NM away.
Source: CBP list of ports of entry.
Business aviation traffic
Henry Post Aaf (fort Sill) Airport recorded 14 business aviation movements in 2025. Traffic peaks in June. Business aviation traffic at KFSI is concentrated in a handful of months, with June showing the highest volume and several months recording no activity at all.
Business jet movements, FAA TFMSC count. Peak month June, 4 movements in 2025.
Source: FAA TFMSC, business jet movements, 2025.
Climate
Henry Post Aaf (fort Sill) Airport averages 26.1 days above 90°F in July and 22.9 freeze days in January. July is the warmest month, with average highs of 95.9°F, and January the coldest, at 51.4°F.
Weather station is 3.6 NM from the field. Some values are estimated by the agency. 1991–2020 climate normals.
Source: NOAA NCEI.
Operating constraints
Henry Post Aaf (fort Sill) Airport has published operating constraints in four categories: access, runway notes, pavement strength and other notes.
PAPI for runway 18 is pilot-activated on 125.95 during approach. PAPI for runway 36 and runway lighting operate on request to approach.
A 24-hour prior permission request is required for all transient aircraft.
There is potential for bird activity near the pond northwest of the runway 18 approach end.
Henry Post Airfield is located within restricted special use airspace R5601. Contact Fort Sill Approach for access.
Runway 18-36 has nonstandard safety areas beyond each end due to terrain grade. There are no paved overruns.
Wind cones are located 353 feet from the runway edge. Runway edge lights are located 26 feet from the runway edge line.
Taxiway A and Taxiway C have a restricted gross weight pavement classification. Aircraft the size of a C-130 or larger must use Taxiway B for runway entry and exit.
Weather forecast service is available from 1200 to 0400Z, Monday through Friday, except holidays. Remote briefing service is available from the 26th Operational Weather Squadron at Barksdale Air Force Base.
No transient maintenance is available, and service is limited. Transient aircrew must remain with their aircraft to provide technical direction and assistance during servicing.
Airfield management operates from 1230 to 2100Z, Monday through Friday, except holidays. Other services are available as published or by NOTAM; contact Airfield Management or Weather for details.
Weather observation is automated 24/7. Weather observation is augmented as required during hours when weather forecast service is available. Weather observation visibility is limited to 0.25 statute miles north and northeast when the surface weather observation visibility sensor is augmented.
Airfield condition is unmonitored when airfield management is closed.
Airfield lighting is controlled by Fort Sill ARAC.
Tower operating hours are by NOTAM only.
Fort Sill ARAC operates 24 hours a day, seven days a week, year-round.
Source: FAA Chart Supplement.
Nearby airfields
Henry Post Aaf (fort Sill) Airport has five airfields within 39 NM. The closest is Lawton-Fort Sill Regional (KLAW), 4.98 NM south.
Source: Skystar calculation from official coordinates.
Skystar at KFSI
We arrange catering, fuel and trip support here. Supplier prices reach you unchanged; our coordination fee sits on its own line.
The same order, priced two ways.
$1,200.00 catering order at KFSI.
Unchanged.
What the kitchen invoices us is what your quote reads.
One line, fixed.
It does not move with the size of the order.
At cost.
Passed on at the exact amount the processor took.
Market practice figures are industry averages, not a specific competitor.
Frequently asked questions
Is KFSI open to civilian or transient traffic?
Henry Post AAF (KFSI) is a private-use military airfield at Fort Sill, Oklahoma, and it sits inside restricted special use airspace R5601. Access requires contact with Fort Sill Approach, and all transient aircraft need a 24-hour prior permission request. Aircrew of transient aircraft must remain with the aircraft to provide technical direction or assistance during servicing, since no transient maintenance is available. This is not a facility for unscheduled civilian arrivals.
What customs arrangement applies at KFSI?
Henry Post AAF (KFSI) has no onsite customs service, and no customs type is designated for the field. The nearest customs facility is Will Rogers World Airport (KOKC), located about 59.5 nautical miles away. Operators needing to clear customs should plan a stop at KOKC rather than expecting any processing at Fort Sill itself. This distance should be factored into routing for any international arrival.
What is the runway configuration at Henry Post AAF?
Henry Post AAF (KFSI) has a single paved runway, 18/36, measuring 5,002 feet long and 150 feet wide with a concrete surface. The airfield notes nonstandard safety areas beyond each runway end due to terrain grade, and there are no paved overruns. PAPI on runway 18 is pilot-activated on 125.95 during approach, while PAPI on runway 36 and runway lighting operate on request to approach. Taxiways A and C carry a restricted gross weight rating, so aircraft the size of a C-130 or larger must use Taxiway B for runway entry and exit.
When does business aviation traffic peak at KFSI?
Business aviation activity at Henry Post AAF (KFSI) is concentrated in a few months rather than spread evenly through the year, according to FAA TFMSC data for 2025. June recorded the highest count among the months tracked, with smaller volumes appearing in April, July, September, and November. Several months, including February, March, May, August, October, and December, showed no recorded business aviation operations. Total annual operations at the field reached 88, with 14 attributed to business aviation.