SEA (Seattle) to STS (Santa Rosa) flights arrive on time 78% of the time. The most reliable airline on this route is Alaska Airlines at 80%. The average delay is 54 minutes. Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Source: Bureau of Transportation Statistics. Updated March 2026.SEA → STS
SEA (Seattle) to STS (Santa Rosa)
SEA → STS on-time performance by month
24
25
JanFebMarAprMayJunJulAugSepOctNovDec
Worse
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This route is on time most of the time. About 78% of flights arrive on schedule.
Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Accurate?
Alaska Airlines edges out SkyWest Airlines on this route — 80% vs 69% on time.
Airline Comparison
Alaska Airlines leads at 80% on time; SkyWest Airlines trails at 69%.
Accurate?
Good to know
Departing from SEA
82% on timeExpect ~19 min sitting on the taxiway after your gate pushes back. SEA has long runway queues.
TSA is currently ~10 min. Best time: 4 AM (about 5 min).
Arriving at STS
82% on timeWhen flights into STS are late, the average delay is 62 minutes. Build buffer if you have ground plans.
If connecting at STS: TSA is ~5 min right now. Allow at least 60 minutes for a domestic connection.
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Data last updated March 2026. Source: Bureau of Transportation Statistics.