Montague, California
KSIY Siskiyou County
Siskiyou County (KSIY) is a non-towered, public-use airport in Montague, California, at 2,651.1 ft MSL. Its runway is 17/35 (7,490 by 150 ft, asphalt). Right traffic for runway 35. CTAF 123.0.
FAA NASR data effective Oct 29, 2026. Not for navigation; verify with current FAA charts and the Chart Supplement.
Airport
At a glance
- Identifiers
- ICAO KSIY, FAA SIY
- Location
- Montague, California (Siskiyou County). 3 NM NE of the city center
- Elevation
- 2,651.1 ft MSL
- Position
- 41.7814° N, 122.4681° W
- Control tower
- No, non-towered
- Sectional chart
- Klamath Falls
- Magnetic variation
- 19° E (1975)
- Fuel
- Jet A
- Ownership
- Publicly owned, open to the public
- Attendance
- Daily 0800-1700
1 runway
Runways
| Runway | Length × width | Surface | Edge lights |
|---|---|---|---|
| 17/35 | 7,490 × 150 ft | Asphalt, good condition | Medium intensity |
Runway ends and traffic pattern
| End | Pattern | Glide slope lights | Instrument | Displaced threshold | Landing distance |
|---|---|---|---|---|---|
| 17 | Left traffic | 2-light PAPI, left | None listed | None listed | Not listed |
| 35 | Right traffic | 2-light PAPI, left | None listed | None listed | Not listed |
VHF
Frequencies
- CTAF
- 123.0
- Actvt Mirl Ry 17/35, Papi Rys 17 and 35, Reil Rys 17 and 35 - Ctaf.
- UNICOM
- 123.0
Weather station
- ASOS SIY
- 121.125
Before you go
Brief KSIY in Ascent EFB.
Current weather, NOTAMs and the airport diagram for Siskiyou County, in the app on iPhone and iPad.
Not for navigation. Verify with current FAA charts and the Chart Supplement before flight.
Source: FAA NASR 28-day subscription, cycle effective Oct 29, 2026. Airport data changes every 28 days and NOTAMs can override it at any time.