How often are JFK to SJU flights on time?

Flights from New York (JFK) to San Juan (SJU) arrive on time 80% of the time across 20,538 flights of official data.

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

Delta Air Lines has the best on-time record on this route at 89% across 6,479 flights.

Route reliability

Flights from New York to San Juan arrive on time 80% of the time across 20,538 flights. Here’s how each airline really performs.

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On-time rate

20,538 flights

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

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