Which airline is most reliable for SEA (Seattle) to LAX (Los Angeles)?

The most reliable airline on the SEA to LAX route is United Airlines, with an on-time arrival rate of 91%.

How often are flights delayed from SEA to LAX?

About 17% of flights from SEA to LAX experience delays. 83% arrive on time.

What's the average delay on SEA to LAX flights?

When flights from SEA to LAX are delayed, the average delay is approximately 57 minutes.

Is a short connection safe after a SEA to LAX flight?

With 83% of SEA to LAX flights arriving on time and an average delay of 57 minutes when late, a connection under 60 minutes at LAX is risky. We recommend at least 75-90 minutes for domestic connections after this route.

SEA → LAX

SEA (Seattle) to LAX (Los Angeles)

SEA (Seattle) to LAX (Los Angeles) flights arrive on time 83% of the time. The most reliable airline on this route is United Airlines at 91%. The average delay is 57 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 → LAX on-time performance by month

JanFebMarAprMayJunJulAugSepOctNovDec

Worse

Better

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?

United Airlines is significantly more reliable on this route at 91% on time vs JetBlue Airways at 68%.

Airline Comparison

United Airlines leads at 91% on time; JetBlue Airways trails at 68%.

Accurate?

Good to know

Departing from SEA

81% on time

Expect ~20 min sitting on the taxiway after your gate pushes back. SEA has long runway queues.

TSA is currently ~22 min. Best time: 4 AM (about 5 min).

More about SEA →

Arriving at LAX

81% on time

When flights into LAX are late, the average delay is 70 minutes. Build buffer if you have ground plans.

If connecting at LAX: TSA is ~20 min right now. Allow at least 60 minutes for a domestic connection.

More about LAX →Connection times at LAX →

Flight cancelled or delayed?

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Flying out of SEA? We'll brief you.

Delays, TSA, weather, gates — we'll let you know if something matters.

SEA Airport LAX Airport

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Flying this route?

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Data last updated October 2026. Source: Bureau of Transportation Statistics.