SMF (Sacramento) to SEA (Seattle) flights arrive on time 83% of the time. The most reliable airline on this route is SkyWest Airlines at 88%. The average delay is 51 minutes. Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Source: Bureau of Transportation Statistics. Updated August 2026.SMF → SEA
SMF (Sacramento) to SEA (Seattle)
SMF → SEA on-time performance by month
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This route is on time most of the time. About 83% of flights arrive on schedule.
Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Accurate?
SkyWest Airlines edges out Southwest Airlines on this route — 88% vs 79% on time.
Airline Comparison
SkyWest Airlines leads at 88% on time; Southwest Airlines trails at 79%.
Accurate?
Good to know
Departing from SMF
83% on timeTSA is currently ~5 min. Best time: 4 AM (about 5 min).
Arriving at SEA
80% 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.
Flight cancelled or delayed?
Check what SkyWest Airlines owes you — refund rights, action plan, complaint email. Free.
Flying out of SMF? 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.