SEA (Seattle) to STS (Santa Rosa) flights arrive on time 80% of the time. The most reliable airline on this route is Alaska Airlines at 82%. The average delay is 46 minutes. Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Source: Bureau of Transportation Statistics. Updated October 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 80% 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 — 82% vs 73% on time.
Airline Comparison
Alaska Airlines leads at 82% on time; SkyWest Airlines trails at 73%.
Accurate?
Good to know
Departing from SEA
81% on timeExpect ~20 min sitting on the taxiway after your gate pushes back. SEA has long runway queues.
TSA is currently ~27 min. Best time: 4 AM (about 5 min).
Arriving at STS
80% on timeWhen flights into STS are late, the average delay is 61 minutes. Build buffer if you have ground plans.
If connecting at STS: TSA is ~17 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 October 2026. Source: Bureau of Transportation Statistics.