Airport information
- FAA LID
- IS55
- Coordinates
- 40.5909, -90.9424
- Elevation
- 705 ft MSL
- Magnetic variation
- 2E
- Sectional chart
- CHICAGO
- Airport use
- Private
- Control tower
- No
- ARTCC
- CHICAGO (ZAU)
- Flight service (FSS)
- SAINT LOUIS
- Attendance
- UNATNDD
- Segmented circle
- No
- Wind indicator
- yes
- Activated
- 1980/10
- Distance from city
- 1 E
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 | 05:00 AM | 10:00Z |
| Sunrise | 05:33 AM | 10:33Z |
| Sunset | 08:38 PM | 01:38Z |
| Evening civil twilight Loggable night begins | 09:11 PM | 02:11Z |
Plan a flight from IS55
Traffic pattern
- Landing
- Rwy 18
- Pattern
- left (turns left)
- TPA
- 1,700 ft MSL (≈1,000 AGL)
Enter the left downwind for Rwy 18 at 1,700 ft MSL (≈1,000 AGL) on a 45°. TPA estimated at 1,000 ft AGL (not charted for this field).
Runway 18/36
2,525 ft × 100 ft · Turf- Heading
- n/a
- Traffic pattern
- Left
- Heading
- n/a
- Traffic pattern
- Left
- Approach obstacle
- Road, 75 ft from threshold
| Runway | Length | Your margin |
|---|---|---|
| 18/36 | 2,525 ft |
Nearby navigation aids
| NavAid | Type | Freq | Radial / Dist magnetic |
|---|---|---|---|
| BRL · Burlington | VORTAC | 111.40 | r180° / 8 NM |
| GBG · Galesburg | VOR-DME | 109.80 | r225° / 31.1 NM |
VFR sectional
No published instrument procedures or Chart Supplement for IS55. VFR sectional link above.
Ownership & management
Remarks FAA
- FOR CD CTC CHICAGO ARTCC AT 630-906-8921.
- 300 FT LIGHTED TOWER 1/2 MILE SW OF RWY.
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 IS55 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 IS55
Morton Airport (IS55) is an airport in La Harpe, IL, at 705 ft MSL. It has 1 runway, the longest 2,525 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for IS55, refreshed from the Aviation Weather Center and FAA NASR.
Does IS55 have a control tower?
No. Morton Airport is a non-towered (pilot-controlled) airport; use the published CTAF/UNICOM on the Comms & NavAids tab.
What is the longest runway at IS55?
Morton Airport has 1 runway; the longest is 2,525 ft. See the Runways tab for headings, surface, and lighting.
Where is IS55?
Morton Airport is in La Harpe, IL, at an elevation of 705 ft MSL. Coordinates: 40.5909, -90.9424.
Fly out of IS55 often?
Save IS55 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.