Airports / Oklahoma / FSI
Henry Post Army Air Field
KFSI / FSIFort Sill, OklahomaELEV 1,189 FT
Google rating
Google reviews
Field elevation
Nearest alternate
Field standing
5 nm
To the nearest alternate
Lawton Fort Sill Regional Airport (LAW) — 4 fields within 50 nm.
Overview
Henry Post Army Air Field, listed as KFSI / FSI, is a mid-sized airport in Fort Sill, Oklahoma. Field elevation is 1,189 feet above sea level. Free of scheduled airline operations, it serves business aviation, charter flights, and local general aviation.
While no charter operators list FSI as their home base, the field is reachable for repositioned charter aircraft from nearby bases. The closest alternate fields are Lawton Fort Sill Regional Airport (LAW, 5 nm), Hobart Regional Airport (HBR, 38 nm), and Wichita Falls Municipal Airport / Sheppard Air Force Base (SPS, 40 nm).
Trip costs from FSI are driven by the aircraft category flown and how far it must reposition. Browse operators flying from the area or estimate a trip cost from FSI to plan your flight.
Field capability
ICAO
KFSI
IATA
FSI
FAA / Local
FSI
Elevation
1,189 ft
Coordinates
34.6498° N · 98.4022° W
Airspace
G · GolfClass G — GolfUncontrolled field — no tower. Pilots self-announce and sequence themselves on the common traffic advisory frequency.Source: FAA NASR class airspace
Size
Medium
Scheduled svc
No
Elevation vs OK fields
state range 451–3,123 ft
At 1,189 ft, FSI sits higher than 61% of the 46 Oklahoma fields on the register.
Access & alternates
Closest alternate fields by great-circle distance — every listing links to its own field brief.
- 5nmLAWLawton Fort Sill Regional AirportLawton
- 38nmHBRHobart Regional AirportHobart
- 40nmSPSWichita Falls Municipal Airport / Sheppard Air Force BaseWichita Falls
- 43nmLTSAltus Air Force BaseAltus
- 60nmOKCOKC Will Rogers World AirportOklahoma City
- 68nmTIKTinker Air Force BaseOklahoma City
Location
Open the full mapKFSI · Henry Post Army Air Field · Fort Sill, OK
From the ramp
Google Places photography of Henry Post Army Air Field — tap any frame to view full-screen, then cycle with the arrows or your keyboard.