How often are SEA to SAN flights on time?

Flights from Seattle (SEA) to San Diego (SAN) arrive on time 88% of the time across 27,836 flights of official data.

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

Delta Air Lines has the best on-time record on this route at 90% across 10,017 flights.

Route reliability

Flights from Seattle to San Diego arrive on time 88% of the time across 27,836 flights. Here’s how each airline really performs.

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On-time rate

27,836 flights

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

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Do Morning Flights Really Have Fewer Delays?

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Are Some Airlines Really More Reliable Than Others?

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

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