How often are SEA to JFK flights on time?

Flights from Seattle (SEA) to New York (JFK) arrive on time 87% of the time across 17,338 flights of official data.

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

Delta Air Lines has the best on-time record on this route at 90% across 7,774 flights.

Route reliability

Flights from Seattle to New York arrive on time 87% of the time across 17,338 flights. Here’s how each airline really performs.

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On-time rate

17,338 flights

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

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Nonstop vs. Connecting Flights: The Reliability Trade-off

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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–JFK flights on reliability, weather, and connection safety — not just price.