San Carlos, California
KSQL San Carlos
San Carlos (KSQL) is a towered, public-use airport in San Carlos, California, at 5.5 ft MSL. Its runway is 12/30 (2,621 by 75 ft, asphalt). Right traffic for runway 30. Published pattern altitude 800 ft AGL (about 806 ft MSL). CTAF 119.0.
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 KSQL, FAA SQL
- Location
- San Carlos, California (San Mateo County). 2 NM NE of the city center
- Elevation
- 5.5 ft MSL
- Position
- 37.5119° N, 122.2495° W
- Pattern altitude
- 800 ft AGL
- Control tower
- Yes (ATCT)
- Sectional chart
- San Francisco
- Magnetic variation
- 15° E (2000)
- Fuel
- 100LL, Jet A, Jet A+, UL94
- Ownership
- Publicly owned, open to the public
- Attendance
- Daily 0800-1800
1 runway
Runways
| Runway | Length × width | Surface | Edge lights |
|---|---|---|---|
| 12/30 | 2,621 × 75 ft | Asphalt, fair condition | Medium intensity |
Runway ends and traffic pattern
| End | Pattern | Glide slope lights | Instrument | Displaced threshold | Landing distance |
|---|---|---|---|---|---|
| 12 | Left traffic | 2-box VASI, left | None listed | None listed | Not listed |
| 30 | Right traffic | 2-box VASI, left | None listed | None listed | Not listed |
VHF
Frequencies
- ATIS
- 125.9
- "San Carlos". Hours 0700-2100
- CTAF
- 119.0
- UNICOM
- 122.95
- Tower
- 119.0
- "San Carlos". Hours 0700-2100
- Ground
- 118.025
- "San Carlos". Hours 0700-2100
- Approach / departure
- 133.95
- "Norcal"
- Approach / departure
- 135.65
- "Norcal"
Weather station
- AWOS-3P SQL
- No frequency listed
Before you go
Brief KSQL in Ascent EFB.
Current weather, NOTAMs and the airport diagram for San Carlos, 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.