Charles M. Schulz Sonoma County Airport
Santa Rosa, United StatesSTS / KSTS
Regional airport · 18 direct destinations · 2 runways · longest runway 6,001 ft
43 °F · ClearSource: METAR observation via the NOAA Aviation Weather Center
Route
Santa Rosa → San Diego
STS
Santa RosaCharles M. Schulz Sonoma County Airport
Santa RosaCharles M. Schulz Sonoma County AirportSANSan DiegoSan Diego International Airport
San DiegoSan Diego International Airport- Distance
- 509 mi
- Estimated flight time
- ~1h 30m
Same local time in Santa Rosa and San Diego.
Observed nonstop
How often does this route fly?
Frequency
A couple of times a day
On average around 3.5 flights a day, observed from October 2025 to September 2026.
- 3.5
- flights per day
- 5
- busiest month · Jun
- 1
- quietest month · Dec
- 1 hr 17 min
- measured flight time
- 12 / 12
- months seen
Through the year
Per day, month by month
- 1.5Jan2026
- 2Feb
- 2Mar
- 4Apr
- 4May
- 5Jun
- 4Jul
- 4Aug
- 4Sep
- 3Oct2025
- 3Nov
- 1Dec
In December 2025, January 2026 we saw less traffic at Santa Rosa in general than usual; compare that month with care.
Airlines
Who flies it
SkyWest Airlinesall year
Southwest Airlinessummer
Horizon Airsummer
Air Cargo Express Internationalnow and then
Through the day
Departure times
Local time in Santa Rosa. Most departures between 06:00 and 09:00.
- 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
- 3.6Mon
- 3.3Tue
- 2.7Wed
- 2.8Thu
- 3.5Fri
- 3.6Sat
- 2.8Sun
Fleet
Aircraft observed
- Embraer 175E75L72%
- Boeing 737-700B73723%
- Cessna Citation LatitudeC68A1%
- Embraer Phenom 300E55P1%
- Gulfstream IVGLF40%
All the numbers in a table
| Month | Per day | Seen | Airlines |
|---|---|---|---|
| January 2026 | 1.5 | 48 |
|
| February 2026 | 2 | 50 |
|
| March 2026 | 2 | 73 |
|
| April 2026 | 4 | 115 |
|
| May 2026 | 4 | 123 |
|
| June 2026 | 5 | 133 |
|
| July 2026 | 4 | 136 |
|
| August 2026 | 4 | 129 |
|
| September 2026 | 4 | 129 |
|
| October 2025 | 3 | 84 |
|
| November 2025 | 3 | 84 |
|
| December 2025 | 1 | 40 |
|
Airlines observed on this route
From observed callsign routes on STS-SAN - not a booking guarantee.
About this route
- Domestic route: both airports are in the same country.
- The 6th longest observed direct route from STS, out of 18.
- The opposite direction has also been observed as a direct connection.
- Direct destinations observed from Santa Rosa: 18.
- Direct destinations observed from San Diego: 90.
The airports on this route
San Diego International Airport
San Diego, United StatesSAN / KSAN
Major airport · 90 direct destinations · 1 runway · longest runway 9,400 ft
64 °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 SANOakland San Francisco Bay AirportOakland is about 63 mi from Santa Rosa.View route →SFO SANSan Francisco International AirportSan Francisco is about 66 mi from Santa Rosa.View route →SMF SANSacramento International AirportSacramento is about 67 mi from Santa Rosa.View route →STS SNAJohn Wayne Orange County International AirportSanta Ana is about 76 mi from San Diego.View route →
About the route from Santa Rosa to San Diego
The observed direct connection between Charles M. Schulz Sonoma County Airport (STS) and San Diego International Airport (SAN) covers approximately 509 mi. The estimated flight time is around 1h 30m. Air Cargo Express International, Horizon Air, SkyWest Airlines and Southwest Airlines have been observed on this connection in the available route data.
Frequently asked questions about this route
- How far is Santa Rosa from San Diego by air?
- The great-circle distance between Charles M. Schulz Sonoma County Airport and San Diego International Airport is approximately 509 mi.
- How long is the flight from Santa Rosa to San Diego?
- Based on the distance, the estimated flight time is about 1h 30m. This is an estimate, not a schedule.
- Is there a direct connection from Santa Rosa to San Diego?
- Yes, a direct connection between STS and SAN has been observed in our route data.
- Which airlines have been observed on this route?
- In the available route data: Air Cargo Express International, Horizon Air, SkyWest Airlines and Southwest Airlines.
- How often is there a flight from Santa Rosa to San Diego?
- On average around 3.5 flights a day, measured over twelve months (October 2025 to September 2026) in the flight archive, with 1,144 observed flights. Mainly SkyWest Airlines, Southwest Airlines, Horizon Air. That is an observation, not a timetable.
- What is the current time difference between Santa Rosa and San Diego?
- Same local time in Santa Rosa and San Diego.
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.