San Diego International Airport
San Diego, United StatesSAN / KSAN
Major airport · 90 direct destinations · 1 runway · longest runway 9,400 ft
91 °F · Partly cloudySource: METAR observation via the NOAA Aviation Weather Center
Route
San Diego → Santa Rosa
SAN
San DiegoSan Diego International Airport
San DiegoSan Diego International AirportSTSSanta RosaCharles M. Schulz Sonoma County Airport
Santa RosaCharles M. Schulz Sonoma County Airport- Distance
- 509 mi
- Estimated flight time
- ~1h 30m
Same local time in San Diego and Santa Rosa.
Observed nonstop
How often does this route fly?
Frequency
A couple of times a day
On average around 3 flights a day, observed from October 2025 to September 2026.
- 3
- flights per day
- 5
- busiest month · May
- 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
- 1Feb
- 2Mar
- 4Apr
- 5May
- 4Jun
- 4Jul
- 4Aug
- 4Sep
- 2Oct2025
- 2Nov
- 1Dec
Airlines
Who flies it
SkyWest Airlinesall year
Southwest Airlinessummer
Horizon Airsummer
Through the day
Departure times
Local time in San Diego. Most departures between 21:00 and 00:00.
- 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
- 3.3Mon
- 2.6Tue
- 2.5Wed
- 2.9Thu
- 3.6Fri
- 2.6Sat
- 3.4Sun
Fleet
Aircraft observed
- Embraer 175E75L71%
- Boeing 737-700B73724%
- Cessna Citation LatitudeC68A1%
- Cessna Citation ExcelC56X0%
- Bombardier Challenger 600CL600%
All the numbers in a table
| Month | Per day | Seen | Airlines |
|---|---|---|---|
| January 2026 | 1.5 | 32 |
|
| February 2026 | 1 | 36 |
|
| March 2026 | 2 | 59 |
|
| April 2026 | 4 | 109 |
|
| May 2026 | 5 | 130 |
|
| June 2026 | 4 | 127 |
|
| July 2026 | 4 | 136 |
|
| August 2026 | 4 | 124 |
|
| September 2026 | 4 | 128 |
|
| October 2025 | 2 | 81 |
|
| November 2025 | 2 | 71 |
|
| December 2025 | 1 | 35 |
|
Airlines observed on this route
From observed callsign routes on SAN-STS - not a booking guarantee.
About this route
- Domestic route: both airports are in the same country.
- The opposite direction has also been observed as a direct connection.
- Direct destinations observed from San Diego: 90.
- Direct destinations observed from Santa Rosa: 18.
The airports on this route
Charles M. Schulz Sonoma County Airport
Santa Rosa, United StatesSTS / KSTS
Regional airport · 18 direct destinations · 2 runways · longest runway 6,001 ft
90 °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.
SAN OAKOakland San Francisco Bay AirportOakland is about 63 mi from Santa Rosa.View route →SAN SFOSan Francisco International AirportSan Francisco is about 66 mi from Santa Rosa.View route →SAN SMFSacramento International AirportSacramento is about 67 mi from Santa Rosa.View route →SNA STSJohn Wayne Orange County International AirportSanta Ana is about 76 mi from San Diego.View route →
About the route from San Diego to Santa Rosa
The observed direct connection between San Diego International Airport (SAN) and Charles M. Schulz Sonoma County Airport (STS) covers approximately 509 mi. The estimated flight time is around 1h 30m. 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 San Diego from Santa Rosa by air?
- The great-circle distance between San Diego International Airport and Charles M. Schulz Sonoma County Airport is approximately 509 mi.
- How long is the flight from San Diego to Santa Rosa?
- 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 San Diego to Santa Rosa?
- Yes, a direct connection between SAN and STS has been observed in our route data.
- Which airlines have been observed on this route?
- In the available route data: Horizon Air, SkyWest Airlines and Southwest Airlines.
- How often is there a flight from San Diego to Santa Rosa?
- On average around 3 flights a day, measured over twelve months (October 2025 to September 2026) in the flight archive, with 1,068 observed flights. Mainly SkyWest Airlines, Southwest Airlines, Horizon Air. That is an observation, not a timetable.
- What is the current time difference between San Diego and Santa Rosa?
- Same local time in San Diego and Santa Rosa.
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.