Airport information
- FAA LID
- 9IL4
- Coordinates
- 41.8072, -89.0481
- Elevation
- 790 ft MSL
- Sectional chart
- CHICAGO
- Airport use
- Private
- Control tower
- No
- ARTCC
- CHICAGO (ZAU)
- Flight service (FSS)
- KANKAKEE
- Attendance
- UNATNDD
- Segmented circle
- No
- Wind indicator
- yes
- Activated
- 2004/09
- Distance from city
- 3 SW
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 | 04:47 AM | 09:47Z |
| Sunrise | 05:21 AM | 10:21Z |
| Sunset | 08:35 PM | 01:35Z |
| Evening civil twilight Loggable night begins | 09:09 PM | 02:09Z |
Plan a flight from 9IL4
Traffic pattern
- Landing
- Rwy 18
- Pattern
- right (turns right)
- TPA
- 1,800 ft MSL (≈1,000 AGL)
Enter the right downwind for Rwy 18 at 1,800 ft MSL (≈1,000 AGL) on a 45°. TPA estimated at 1,000 ft AGL (not charted for this field).
Runway 18/36
1,385 ft × 100 ft · Turf- Heading
- n/a
- Traffic pattern
- Right
- Heading
- n/a
- Traffic pattern
- Left
- Approach obstacle
- Road, 15 ft, 890 ft from threshold
Headings shown are true (magnetic variation unavailable).
| Runway | Length | Your margin |
|---|---|---|
| 18/36 | 1,385 ft |
Nearby navigation aids
| NavAid | Type | Freq | Radial / Dist magnetic |
|---|---|---|---|
| PLL · Polo | VOR-DME | 111.20 | r111° / 23.3 NM |
| RFD · Rockford | VOR-DME | 110.80 | r164° / 26 NM |
| DPA · Du Page | VOR-DME | 108.40 | r259° / 31.6 NM |
| JOT · Joliet | VORTAC | 112.30 | r294° / 36.3 NM |
VFR sectional
No published instrument procedures or Chart Supplement for 9IL4. VFR sectional link above.
Ownership & management
Remarks FAA
- PROVIDED CLEAR 20:1 APCHS, CLEAR OBSTACLE FREE ZONE, AND TRAFFIC PATTERNS ARE FLOWN TO THE WEST TO DECONFLICT WITH TPA 3IL7 ARPT.
- 100 FT POWERLINE 1940 FT S OF RY 36.
- FOR CD CTC CHICAGO ARTCC AT 630-906-8921.
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 9IL4 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 9IL4
Thompson Airport (9IL4) is an airport in Steward, IL, at 790 ft MSL. It has 1 runway, the longest 1,385 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for 9IL4, refreshed from the Aviation Weather Center and FAA NASR.
Does 9IL4 have a control tower?
No. Thompson Airport is a non-towered (pilot-controlled) airport; use the published CTAF/UNICOM on the Comms & NavAids tab.
What is the longest runway at 9IL4?
Thompson Airport has 1 runway; the longest is 1,385 ft. See the Runways tab for headings, surface, and lighting.
Where is 9IL4?
Thompson Airport is in Steward, IL, at an elevation of 790 ft MSL. Coordinates: 41.8072, -89.0481.
Fly out of 9IL4 often?
Save 9IL4 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.