LAS (Las Vegas) to SEA (Seattle) flights arrive on time 80% of the time. The most reliable airline on this route is Delta Air Lines at 87%. The average delay is 60 minutes. Delays on this route are most often caused by the incoming plane arriving late.
Source: Bureau of Transportation Statistics. Updated April 2026.LAS → SEA
LAS (Las Vegas) to SEA (Seattle)
LAS → SEA 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 incoming plane arriving late.
Accurate?
Delta Air Lines is significantly more reliable on this route at 87% on time vs SkyWest Airlines at 71%.
Airline Comparison
Delta Air Lines leads at 87% on time; SkyWest Airlines trails at 71%.
Accurate?
Good to know
Departing from LAS
77% on timeExpect ~17 min sitting on the taxiway after your gate pushes back. LAS has long runway queues.
TSA is currently ~15 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 ~15 min right now. Allow at least 60 minutes for a domestic connection.
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Data last updated April 2026. Source: Bureau of Transportation Statistics.