St Louis Regional Airport
ALN · KALN · Alton/St Louis, IL · 544 ft elevation · var 1W · Towered
Airport information
- ICAO / IATA
- KALN / ALN
- Coordinates
- 38.8903, -90.0460
- Elevation
- 544 ft MSL
- Magnetic variation
- 1W
- Sectional chart
- ST LOUIS
- Airport use
- Public
- Control tower
- Yes
- ARTCC
- KANSAS CITY (ZKC)
- Flight service (FSS)
- SAINT LOUIS
- NOTAM facility
- ALN
- Attendance
- ALL 0700-2200
- Beacon
- white-green (SS-SR)
- Segmented circle
- No
- Wind indicator
- lighted
- Activated
- 1940/04
- Distance from city
- 4 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 | 05:03 AM | 10:03Z |
| Sunrise | 05:35 AM | 10:35Z |
| Sunset | 08:29 PM | 01:29Z |
| Evening civil twilight Loggable night begins | 09:01 PM | 02:01Z |
Plan a flight from KALN
Night operations
- Airport lighting
- SEE RMK
- Rotating beacon
- white-green · SS-SR
- Pilot-controlled lighting
- ACTVT MALSR RWY 29; REIL RWY 11 - CTAF. WHEN ATCT CLSD PAPI 11, 17, 35; HIRL RWY 11/29; MIRL RWY 17/35 PRESET ON LOW INTST, TO INCR INTST & ACTVT - CTAF. on 126.0 — Chart Supplement ↗
Runway lighting aids — 11: 4-light PAPI (right) · 29: MALSR · 17: 4-light PAPI (left) · 35: 4-light PAPI (left).
FAA night windows (civil twilight, loggable night §1.1, currency §61.57) are in the live weather panel above.
Traffic pattern
- Landing
- Rwy 11 · 114°
- Pattern
- left (turns left)
- TPA
- 1,500 ft MSL (≈1,000 AGL)
- CTAF
- 126.0
Enter the left downwind for Rwy 11 at 1,500 ft MSL (≈1,000 AGL) on a 45°. TPA estimated at 1,000 ft AGL (not charted for this field).
Runway 11/29
8,099 ft × 150 ft · Asphalt (Good)- Heading
- 114° mag · 113° true
- Markings
- precision
- VGSI
- 4-light PAPI (right) (3°)
- Traffic pattern
- Left
- Approach obstacle
- Tree, 35 ft, 1,275 ft from threshold, 475 ft R of centerline — 30:1 slope to clear
- Heading
- 294° mag · 293° true
- Markings
- precision
- Approach lights
- MALSR
- Instrument landing
- ILS/DME · CAT I · LOC 108.5 (ALN) · GS 3.00°
- Traffic pattern
- Left
Runway 17/35
6,500 ft × 100 ft · Asphalt (Good)- Heading
- 174° mag · 173° true
- Markings
- nonprecision
- VGSI
- 4-light PAPI (left) (3°)
- Traffic pattern
- Left
- Approach obstacle
- Tree, 18 ft, 896 ft from threshold, 139 ft L of centerline — 38:1 slope to clear
- Heading
- 354° mag · 353° true
- Markings
- nonprecision
- VGSI
- 4-light PAPI (left) (3°)
- Traffic pattern
- Left
- Approach obstacle
- Trees, 32 ft, 1,379 ft from threshold, 72 ft R of centerline — 36:1 slope to clear
| Runway | Length | Your margin |
|---|---|---|
| 11/29 | 8,099 ft | |
| 17/35 | 6,500 ft |
Communication frequencies
| Service | Frequency | Notes |
|---|---|---|
| A/D | 124.2 | APP/DEP |
| ATIS | 128 | |
| AWOS | 128 | AWOS 3 |
| CLD | 120.2 | CLNC DEL |
| CTAF | 126 | |
| GND | 120.2 | |
| RDO | 122.05 | |
| TWR | 126 | REGIONAL TWR |
| UNIC | 122.95 | UNICOM |
Nearby navigation aids
| NavAid | Type | Freq | Radial / Dist magnetic |
|---|---|---|---|
| TOY · Troy | VORTAC | 116.00 | r323° / 10.9 NM |
| CSX · Cardinal | VOR-DME | 116.45 | r061° / 16.9 NM |
| STL · St Louis | VORTAC | 117.40 | r084° / 20.5 NM |
| SKE · Scott | TACAN | 112.20 | r334° / 22.6 NM |
Airport diagram
Open PDF ↗Preview diagram
Procedures at a glance
⚠ Hot spots published at this airport — review the hot-spot chart before you taxi ↗Approaches6
Arrivals
Minimums & Hot Spots
Chart Supplement FAA A/FD
Open PDF ↗Preview Chart Supplement
VFR sectional
Services
- Fuel available
- 100LL, Jet A
- Bottled oxygen
- HIGH
- Bulk oxygen
- HIGH
- Airframe service
- MAJOR
- Powerplant service
- MAJOR
- Parking
- tiedowns, hangars
- Other services
- Charter, Instruction, Rental
Ownership & management
Remarks FAA
- RWY 11 & 17 APCH ENDS CLOSELY ALIGNED; VERIFY CORRECT COMPASS HDG PRIOR TO DEP.
- INDEX B FFR EQUIP AVBL WITH 30-MIN PPR.
- MIGRATORY BIRD ACTIVITY IN VICINITY OF ARPT SEPTEMBER THROUGH APRIL.
- WILDLIFE ON AND IN VICINITY OF AIRPORT
- ACTVT MALSR RWY 29; REIL RWY 11 - CTAF. WHEN ATCT CLSD PAPI 11, 17, 35; HIRL RWY 11/29; MIRL RWY 17/35 PRESET ON LOW INTST, TO INCR INTST & ACTVT - CTAF.
- ATTENDANT AFT HR - CALL 618-259-3230 OR 258-1005.
- PCR VALUE: 440/F/D/X/T
- PCR VALUE: 180/F/D/X/T
- RWY 11/29 NOT AVBL FOR PART 121/PART 380 OPS WITH SKED PAX CARRYING OPS MORE THAN 9 PAX SEATS AND NON-SKED PAX CARRYING OPS MORE THAN 30 PAX SEATS. 90 DAY PPR FOR UNSKED ACR OPS GTR THAN 30 PAX SEATS - CALL AMGR.
- RWY 17/35 NOT AVBL FOR PART 121/PART 380 OPS WITH SKED PAX CARRYING OPS MORE THAN 9 PAX SEATS AND NON-SKED PAX CARRYING OPS MORE THAN 30 PAX SEATS. 90 DAY PPR FOR UNSKED ACR OPS GTR THAN 30 PAX SEATS - CALL AMGR.
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 KALN 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 KALN
St Louis Regional Airport (ALN · KALN) is an airport in Alton/St Louis, IL, at 544 ft MSL. It has 2 runways, the longest 8,099 ft, with a control tower. This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for KALN, refreshed from the Aviation Weather Center and FAA NASR.
Does KALN have a control tower?
Yes. St Louis Regional Airport has an operating FAA control tower. Check the Comms & NavAids tab for tower and ground frequencies.
What is the longest runway at KALN?
St Louis Regional Airport has 2 runways; the longest is 8,099 ft. See the Runways tab for headings, surface, and lighting.
Where is KALN?
St Louis Regional Airport is in Alton/St Louis, IL, at an elevation of 544 ft MSL. Coordinates: 38.8903, -90.0460.
Fly out of KALN often?
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