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AIRPORT

Henry Post Army Air FieldKFSI / FSI

Henry Post Army Air Field serves Fort Sill, Oklahoma, United States. Its ICAO code is KFSI and its IATA code FSI. The longest of its one runway is 18/36, at 5,002 ft (1,525 m). The field is 1,189 ft (362 m) above sea level. Local time is America/Chicago, UTC-6, or UTC-5 with daylight saving.

Published by Overfly · Airport data: OurAirports, · Last updated

ICAO
KFSI
IATA
FSI
LONGEST RUNWAY
5,002 ft
1,525 m · 18/36
ELEVATION
1,189 ft
362 m
TIME ZONE
UTC-6
America/Chicago
POSITION
34.650°N
98.402°W

Runways

18/365,002 ft · 1,525 mCON

Nearest airports

Questions people ask about Henry Post Army Air Field

How long is the runway at Henry Post Army Air Field?

The longest runway, 18/36, is 5,002 ft (1,525 m), surface CON.

What is the elevation of Henry Post Army Air Field?

1,189 ft (362 m) above mean sea level.

What time zone is Henry Post Army Air Field in?

America/Chicago: UTC-6, or UTC-5 with daylight saving.

What are the codes for Henry Post Army Air Field?

ICAO KFSI, IATA FSI. It serves Fort Sill, United States.

How far can you fly from Fort Sill?
Open the mapper with a 7,300 nm range ring around KFSI, then pick your own aircraft, add a route and check every leg.
Open KFSI in the mapper

For reference and planning interest. Not for operational flight planning. Runway and elevation data from OurAirports; check current charts and NOTAMs before any flight. © 2026 Overfly.Flights