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 81%. The average delay is 49 minutes. Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Source: Bureau of Transportation Statistics. Updated August 2026.SEA → STS
SEA (Seattle) to STS (Santa Rosa)
SEA → STS on-time performance by month
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JanFebMarAprMayJunJulAugSepOctNovDec
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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 — 81% vs 67% on time.
Airline Comparison
Alaska Airlines leads at 81% on time; SkyWest Airlines trails at 67%.
Accurate?
Good to know
Departing from SEA
80% on timeExpect ~21 min sitting on the taxiway after your gate pushes back. SEA has long runway queues.
TSA is currently ~14 min. Best time: 4 AM (about 5 min).
Arriving at STS
79% on timeWhen flights into STS are late, the average delay is 63 minutes. Build buffer if you have ground plans.
If connecting at STS: TSA is ~13 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 SEA? 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 August 2026. Source: Bureau of Transportation Statistics.