Siskiyou County Airport
SIY · KSIY · Montague, CA · 2,648 ft elevation · var 19E · Non-towered
Airport information
- ICAO / IATA
- KSIY / SIY
- Coordinates
- 41.7814, -122.4680
- Elevation
- 2,648 ft MSL
- Magnetic variation
- 19E
- Sectional chart
- KLAMATH FALLS
- Airport use
- Public
- Control tower
- No
- ARTCC
- SEATTLE (ZSE)
- Flight service (FSS)
- RANCHO MURIETA
- NOTAM facility
- SIY
- Attendance
- ALL 0800-1700
- Beacon
- white-green (SS-SR)
- Segmented circle
- Yes
- Wind indicator
- lighted
- Activated
- 1943/09
- Distance from city
- 3 NE
Weather
METAR observed
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TAF forecast
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Sun & FAA night 2026-06-21
| Event | Local (PDT) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 05:01 AM | 12:01Z |
| Sunrise | 05:35 AM | 12:35Z |
| Sunset | 08:48 PM | 03:48Z |
| Evening civil twilight Loggable night begins | 09:22 PM | 04:22Z |
Plan a flight from KSIY
Night operations
- Airport lighting
- SEE RMK
- Rotating beacon
- white-green · SS-SR
- Pilot-controlled lighting
- ACTVT MIRL RY 17/35, PAPI RYS 17 AND 35, REIL RYS 17 AND 35 - CTAF. on 123.0 — Chart Supplement ↗
Runway lighting aids — 17: 2-light PAPI (left) · 35: 2-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 17 · 172°
- Pattern
- left (turns left)
- TPA
- 3,600 ft MSL (≈1,000 AGL)
- CTAF
- 123.0
Enter the left downwind for Rwy 17 at 3,600 ft MSL (≈1,000 AGL) on a 45°. TPA estimated at 1,000 ft AGL (not charted for this field).
Runway 17/35
7,490 ft × 150 ft · Asphalt (Good)- Heading
- 172° mag · 191° true
- Markings
- nonprecision
- VGSI
- 2-light PAPI (left) (3°)
- Traffic pattern
- Left
- Approach obstacle
- Road, 15 ft, 850 ft from threshold, 0 ft B of centerline — 43:1 slope to clear
- Heading
- 352° mag · 11° true
- Markings
- nonprecision
- VGSI
- 2-light PAPI (left) (3°)
- Traffic pattern
- Right
| Runway | Length | Your margin |
|---|---|---|
| 17/35 | 7,490 ft |
Communication frequencies
| Service | Frequency | Notes |
|---|---|---|
| ASOS | 121.125 | |
| CNTR | 124.85 | SEATTLE CNTR |
| RDO | 122.4 | RANCHO RDO |
| UNIC | 123 | CTAF/UNICOM |
Nearby navigation aids
| NavAid | Type | Freq | Radial / Dist magnetic |
|---|---|---|---|
| FJS · Fort Jones | VOR-DME | 109.60 | r018° / 25 NM |
| LMT · Klamath Falls | VORTAC | 115.90 | r219° / 39.9 NM |
Procedures at a glance
Approaches1
Minimums & Hot Spots
Chart Supplement FAA A/FD
Open PDF ↗Preview Chart Supplement
VFR sectional
Services
- Fuel available
- Jet A
- Bottled oxygen
- NONE
- Bulk oxygen
- NONE
- Airframe service
- NONE
- Powerplant service
- NONE
- Parking
- tiedowns
- Other services
- Agricultural, Charter
Ownership & management
Remarks FAA
- MIGRATORY FLOCKS OF WATERFOWL IN THE VICINITY OF ARPT DURING SPRING & FALL.
- USFS FIRE OPS MAY-SEP.
- BE ALERT FOR GLIDER OPS MAY-SEP.
- SENSITIVE AG CROPS ADJACENT TO RWY/TWY. ROTOCRAFT SHOULD AVOID OPERATING IN THESE AREAS.
- WILDLIFE IN THE VICINITY OF ARPT.
- FARMING ACTIVITIES AND EQUIPMENT INVOF RWYS AND TWYS.
- FOR CD CTC SEATTLE ARTCC AT 253-351-3694.
- ACTVT MIRL RY 17/35, PAPI RYS 17 AND 35, REIL RYS 17 AND 35 - CTAF.
- EMAIL: AFILIPPONE@CO.SISKIYOU.CA.US
- COUNTY ARPT OFC - YREKA, 530-842-8297.
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 KSIY 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 KSIY
Siskiyou County Airport (SIY · KSIY) is an airport in Montague, CA, at 2,648 ft MSL. It has 1 runway, the longest 7,490 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for KSIY, refreshed from the Aviation Weather Center and FAA NASR.
Does KSIY have a control tower?
No. Siskiyou County Airport is a non-towered (pilot-controlled) airport; use the published CTAF/UNICOM on the Comms & NavAids tab.
What is the longest runway at KSIY?
Siskiyou County Airport has 1 runway; the longest is 7,490 ft. See the Runways tab for headings, surface, and lighting.
Where is KSIY?
Siskiyou County Airport is in Montague, CA, at an elevation of 2,648 ft MSL. Coordinates: 41.7814, -122.4680.
Fly out of KSIY often?
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