How often are LAS to SEA flights on time?

Flights from Las Vegas (LAS) to Seattle (SEA) arrive on time 87% of the time across 38,836 flights of official data.

Which airline is most reliable on the LAS to SEA route?

Delta Air Lines has the best on-time record on this route at 90% across 10,313 flights.

Route reliability

Flights from Las Vegas to Seattle arrive on time 87% of the time across 38,836 flights. Here’s how each airline really performs.

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On-time rate

38,836 flights

On-time = arrived within 15 minutes of schedule, per BTS TranStats. Compare the reverse leg SEA → LAS.

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Are Some Airlines Really More Reliable Than Others?

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Score real LAS–SEA flights on reliability, weather, and connection safety — not just price.