Airport information
- FAA LID
- IA21
- Coordinates
- 41.9567, -94.0869
- Elevation
- 989 ft MSL
- Sectional chart
- OMAHA
- Airport use
- Private
- Control tower
- No
- ARTCC
- MINNEAPOLIS (ZMP)
- Flight service (FSS)
- FORT DODGE
- Segmented circle
- No
- Activated
- 2019/11
- Distance from city
- 1 NE
Weather
METAR observed
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TAF forecast
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Sun & FAA night 2026-06-21
| Event | Local (CDT) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 05:06 AM | 10:06Z |
| Sunrise | 05:41 AM | 10:41Z |
| Sunset | 08:55 PM | 01:55Z |
| Evening civil twilight Loggable night begins | 09:30 PM | 02:30Z |
Plan a flight from IA21
Traffic pattern
- Landing
- Rwy 18
- Pattern
- right (turns right)
- TPA
- 2,000 ft MSL (≈1,000 AGL)
Enter the right downwind for Rwy 18 at 2,000 ft MSL (≈1,000 AGL) on a 45°. TPA estimated at 1,000 ft AGL (not charted for this field).
Runway 18/36
2,000 ft · Turf- Heading
- n/a
- Traffic pattern
- Right
- Heading
- n/a
- Traffic pattern
- Left
Headings shown are true (magnetic variation unavailable).
| Runway | Length | Your margin |
|---|---|---|
| 18/36 | 2,000 ft |
Nearby navigation aids
| NavAid | Type | Freq | Radial / Dist magnetic |
|---|---|---|---|
| DSM · Des Moines | VORTAC | 117.50 | r321° / 36.9 NM |
VFR sectional
No published instrument procedures or Chart Supplement for IA21. VFR sectional link above.
Ownership & management
Nearby airports
Weather is live from the Aviation Weather Center; airport facility data is from the FAA NASR (28-day cycle). For planning and education only; always verify against official sources. Open IA21 in a full tool: METAR/TAF decoder, crosswind calculator, sun & night times, or the density altitude calculator. Planning from here? Find the nearest airport with fuel or an approach, or check whether an IFR alternate is required.
About IA21
Knight Field (IA21) is an airport in Berkley, IA, at 989 ft MSL. It has 1 runway, the longest 2,000 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for IA21, refreshed from the Aviation Weather Center and FAA NASR.
Does IA21 have a control tower?
No. Knight Field is a non-towered (pilot-controlled) airport; use the published CTAF/UNICOM on the Comms & NavAids tab.
What is the longest runway at IA21?
Knight Field has 1 runway; the longest is 2,000 ft. See the Runways tab for headings, surface, and lighting.
Where is IA21?
Knight Field is in Berkley, IA, at an elevation of 989 ft MSL. Coordinates: 41.9567, -94.0869.
Fly out of IA21 often?
Save IA21 as your home base in the SkyReady app for a one-tap Go/No-Go readiness brief, weather alerts, and automatic FAA currency — free to log.