FSI · KFSI · Henry Post Army Air Field

Henry Post Army Air Field (FSI)

Fort Sill, United States · medium airport · 34.650° -98.402° ·
Airport Information
IATA CodeFSI
ICAO CodeKFSI
Typemedium airport
NameHenry Post Army Air Field
MunicipalityFort Sill
CountryUnited States
ContinentNA
Latitude34.650° N
Longitude-98.402° W
Elevation1189 ft
Climate ZoneTemperate
Scheduled ServiceYes
Score250
Local TimeLoading...
Country & Timezone Info
CountryUnited States
ISO Code
RegionFort Sill
Continent CodeNA
IANA TimezoneAmerica/New_York
UTC Offset (Standard)UTC-5
DST OffsetUTC-4
Current Offset--

🌬 Best Time to Fly

Recommended: May – September
Pleasant temperatures across most regions
Loading season...
Spring: Mar–MaySummer: Jun–AugAutumn: Sep–NovWinter: Dec–Feb

✈ Airlines Serving FSI

AA — American AirlinesDL — Delta Air LinesUA — United AirlinesWN — Southwest AirlinesAS — Alaska AirlinesB6 — JetBlueAC — Air Canada

🌡 Climate — Temperate (34.6°N)

Jan
Feb
10°
Mar
13°
Apr
17°
May
21°
11°
Jun
26°
15°
Jul
28°
17°
Aug
27°
16°
Sep
23°
13°
Oct
18°
Nov
12°
Dec
* Approximate average temperatures by month based on temperate latitude zone

AI-Enhanced Insights

Henry Post Army Air Field is a military airfield located on Fort Sill, a major U.S. Army installation in southwestern Oklahoma. The field primarily serves military aviation operations in support of Fort Sill's role as a center for field artillery and air defense training. Named in honor of an Oklahoma-born aviation pioneer, the airfield operates alongside the installation's broader military mission rather than as a commercial passenger facility.

💡 Local Tip
If you are visiting Fort Sill for ceremonies or graduation events at the field, plan to arrive early and carry photo ID, as security screening at the installation gates can add time to your trip, especially on event days.
🚖 Getting There

Travelers visiting Fort Sill typically arrive via Will Rogers World Airport in Oklahoma City or Lawton-Fort Sill Regional Airport, which is just outside the post. A personal vehicle is the most practical option, as public transportation to the installation is limited. Arrangements for visitor passes should be made in advance through the Fort Sill visitor center to ensure smooth entry to the installation.

❓ Frequently Asked Questions
Q: Is Henry Post Army Air Field open to civilian travelers?
A: No, this is a military airfield operating on an active Army installation and does not offer scheduled commercial passenger service.

Q: What is Fort Sill known for?
A: Fort Sill is one of the oldest U.S. Army installations and serves as a primary training center for field artillery and air defense artillery, making it a key hub for Army readiness.

Q: Can family members visit the airfield area?
A: Access to the installation and its airfield requires valid military identification for DoD cardholders, or visitor passes arranged through Fort Sill's visitor control center for authorized guests.

Q: What is the size and classification of the runway?
A: The airfield is classified as a medium-sized facility, supporting military training and operational flights rather than large-scale commercial aviation.
AI-generated content · Generated Jun 26, 2026 · MiniMax-M3

🗺 Location Map

🌏 Nearby Airports (Top 5)

IATANameCity / CountryDistance (km)Distance (mi)Link
LAW Lawton Fort Sill Regional Airport Lawton, United States 9.2 km 5.7 mi View →
DUC Halliburton Field Duncan, United States 45.1 km 28.0 mi View →
FDR Frederick Regional Airport Frederick, United States 62.8 km 39.0 mi View →
CHK Chickasha Municipal Airport Chickasha, United States 63.6 km 39.5 mi View →
HBR Hobart Regional Airport Hobart, United States 70.4 km 43.7 mi View →

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