STS (Santa Rosa) to SAN (San Diego) flights arrive on time 76% of the time. The most reliable airline on this route is Alaska Airlines at 90%. The average delay is 56 minutes. Delays on this route are most often caused by the incoming plane arriving late.
Source: Bureau of Transportation Statistics. Updated October 2026.STS → SAN
STS (Santa Rosa) to SAN (San Diego)
STS → SAN on-time performance by month
24
25
26
JanFebMarAprMayJunJulAugSepOctNovDec
Worse
Better
This route is on time most of the time. About 76% of flights arrive on schedule.
Delays on this route are most often caused by the incoming plane arriving late.
Accurate?
Alaska Airlines edges out SkyWest Airlines on this route — 90% vs 76% on time.
Airline Comparison
Alaska Airlines leads at 90% on time; SkyWest Airlines trails at 76%.
Accurate?
Good to know
Departing from STS
80% on timeExpect ~18 min sitting on the taxiway after your gate pushes back. STS has long runway queues.
TSA is currently ~13 min. Best time: 4 AM (about 5 min).
Arriving at SAN
78% on timeWhen flights into SAN are late, the average delay is 60 minutes. Build buffer if you have ground plans.
If connecting at SAN: TSA is ~24 min right now. Allow at least 60 minutes for a domestic connection.
Flight cancelled or delayed?
Check what Alaska Airlines owes you — refund rights, action plan, complaint email. Free.
Flying out of STS? We'll brief you.
Delays, TSA, weather, gates — we'll let you know if something matters.
Know someone flying soon?
Send them the link — delay data, TSA waits, weather, all free.
Data last updated October 2026. Source: Bureau of Transportation Statistics.