How often are JFK to SEA flights on time?

Flights from New York (JFK) to Seattle (SEA) arrive on time 88% of the time across 17,606 flights of official data.

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

Alaska Airlines has the best on-time record on this route at 90% across 7,589 flights.

Route reliability

Flights from New York to Seattle arrive on time 88% of the time across 17,606 flights. Here’s how each airline really performs.

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On-time rate

17,606 flights

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

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

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