San Carlos Airport
San Carlos, United StatesSQL / KSQL
Regional airport · 8 direct destinations · 1 runway · longest runway 2,621 ft
82 °F · ClearSource: METAR observation via the NOAA Aviation Weather Center
Route
San Carlos → San Francisco
SQL
San CarlosSan Carlos Airport
San CarlosSan Carlos AirportSFOSan FranciscoSan Francisco International Airport
San FranciscoSan Francisco International Airport- Distance
- 10 mi
- Estimated flight time
- ~30m
Same local time in San Carlos and San Francisco.
Observed nonstop
How often does this route fly?
Frequency
Daily at most
On average around 1 flights a day, observed from October 2025 to September 2026.
- 1
- flights per day
- 1.5
- busiest month · Apr
- 1
- quietest month · Oct
- 6 min
- measured flight time
- 11 / 12
- months seen
Through the year
Per day, month by month
- 1Jan2026
- 1Feb
- 1Mar
- 1.5Apr
- 1.5May
- –Jun
- 1Jul
- 1Aug
- 1Sep
- 1Oct2025
- 1Nov
- 1Dec
In December 2025 we saw less traffic at San Carlos in general than usual; compare that month with care.
Airlines
Who flies it
United Airlinesspring
SkyWest Airlinesspring
Delta Air Linesnow and then
Through the day
Departure times
Local time in San Carlos. Most departures between 09:00 and 12:00.
- 00:00
- 01:00
- 02:00
- 03:00
- 04:00
- 05:00
- 06:00
- 07:00
- 08:00
- 09:00
- 10:00
- 11:00
- 12:00
- 13:00
- 14:00
- 15:00
- 16:00
- 17:00
- 18:00
- 19:00
- 20:00
- 21:00
- 22:00
- 23:00
Through the week
By weekday
- 0.2Mon
- 0.2Tue
- 0.2Wed
- 0.3Thu
- 0.2Fri
- 0.3Sat
- 0.1Sun
Fleet
Aircraft observed
- AS6526%
- B0610%
- B40710%
- Cessna 172C1728%
- Boeing 777-200B7724%
All the numbers in a table
| Month | Per day | Seen | Airlines |
|---|---|---|---|
| January 2026 | 1 | 8 |
|
| February 2026 | 1 | 6 | – |
| March 2026 | 1 | 11 |
|
| April 2026 | 1.5 | 3 |
|
| May 2026 | 1.5 | 6 |
|
| June 2026 | Not seen in this month. | ||
| July 2026 | 1 | 7 |
|
| August 2026 | 1 | 8 |
|
| September 2026 | 1 | 6 | – |
| October 2025 | 1 | 6 |
|
| November 2025 | 1 | 4 |
|
| December 2025 | 1 | 7 |
|
Airlines observed on this route
From observed callsign routes on SQL-SFO - not a booking guarantee.
About this route
- Domestic route: both airports are in the same country.
- Direct destinations observed from San Carlos: 8.
- Direct destinations observed from San Francisco: 130.
The airports on this route
San Francisco International Airport
San Francisco, United StatesSFO / KSFO
International hub · 130 direct destinations · 4 runways · longest runway 11,870 ft
71 °F · ClearSource: METAR observation via the NOAA Aviation Weather Center
Alternative airports for this journey
Same journey, a different airport nearby - with an observed direct connection.
OAK SFOOakland San Francisco Bay AirportOakland is about 14 mi from San Carlos.View route →SJC SFOMineta San Jose International AirportSan Jose is about 21 mi from San Carlos.View route →SQL SJCMineta San Jose International AirportSan Jose is about 30 mi from San Francisco.View route →SQL STSCharles M. Schulz Sonoma County AirportSanta Rosa is about 66 mi from San Francisco.View route →
About the route from San Carlos to San Francisco
The observed direct connection between San Carlos Airport (SQL) and San Francisco International Airport (SFO) covers approximately 10 mi. The estimated flight time is around 30m. Delta Air Lines, SkyWest Airlines and United Airlines have been observed on this connection in the available route data.
Frequently asked questions about this route
- How far is San Carlos from San Francisco by air?
- The great-circle distance between San Carlos Airport and San Francisco International Airport is approximately 10 mi.
- How long is the flight from San Carlos to San Francisco?
- Based on the distance, the estimated flight time is about 30m. This is an estimate, not a schedule.
- Is there a direct connection from San Carlos to San Francisco?
- Yes, a direct connection between SQL and SFO has been observed in our route data.
- Which airlines have been observed on this route?
- In the available route data: Delta Air Lines, SkyWest Airlines and United Airlines.
- How often is there a flight from San Carlos to San Francisco?
- On average around 1 flights a day, measured over twelve months (October 2025 to September 2026) in the flight archive, with 72 observed flights. Mainly United Airlines, SkyWest Airlines, Delta Air Lines. That is an observation, not a timetable.
- What is the current time difference between San Carlos and San Francisco?
- Same local time in San Carlos and San Francisco.
Where this data comes from
The route data comes from the flight archive (ADS-B, adsb.lol): which connections actually flew over the last twelve full months and who flew them, combined with our own airport, runway, and airline datasets. It is reference data about observed routes - not a current timetable and no claim about bookability.
The frequency and aircraft on this page come from the flight archive (ADS-B, 12 months, October 2025 to September 2026), summarized per route per month. We do not see every flight, so it is a floor, not a count.
Route data updated on October 11, 2026.