OAK (Oakland) to SEA (Seattle) flights arrive on time 79% of the time. The most reliable airline on this route is Alaska Airlines at 85%. The average delay is 50 minutes. Delays on this route are most often caused by the incoming plane arriving late.
Source: Bureau of Transportation Statistics. Updated March 2026.OAK → SEA
OAK (Oakland) to SEA (Seattle)
OAK → SEA on-time performance by month
24
25
JanFebMarAprMayJunJulAugSepOctNovDec
Worse
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This route is on time most of the time. About 79% 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 — 85% vs 75% on time.
Airline Comparison
Alaska Airlines leads at 85% on time; SkyWest Airlines trails at 75%.
Accurate?
Good to know
Departing from OAK
82% on timeTSA is currently ~5 min. Best time: 4 AM (about 5 min).
Arriving at SEA
82% on timeWhen flights into SEA are late, the average delay is 57 minutes. Build buffer if you have ground plans.
If connecting at SEA: 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.