LAX (Los Angeles) to SEA (Seattle) flights arrive on time 86% of the time. The most reliable airline on this route is Delta Air Lines at 88%. The average delay is 61 minutes. Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Source: Bureau of Transportation Statistics. Updated October 2026.LAX → SEA
LAX (Los Angeles) to SEA (Seattle)
LAX → SEA on-time performance by month
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This route is usually on time. About 86% of flights arrive on schedule.
Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Accurate?
Delta Air Lines edges out JetBlue Airways on this route — 88% vs 80% on time.
Airline Comparison
Delta Air Lines leads at 88% on time; JetBlue Airways trails at 80%.
Accurate?
Good to know
Departing from LAX
81% on timeExpect ~18 min sitting on the taxiway after your gate pushes back. LAX has long runway queues.
TSA is currently ~22 min. Best time: 4 AM (about 5 min).
Arriving at SEA
81% on timeWhen flights into SEA are late, the average delay is 58 minutes. Build buffer if you have ground plans.
If connecting at SEA: TSA is ~13 min right now. Allow at least 60 minutes for a domestic connection.
Flight cancelled or delayed?
Check what Delta Air Lines owes you — refund rights, action plan, complaint email. Free.
Flying out of LAX? 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.