San Juan to New York

What the Data Says About SJU to JFK

The San Juan to New York corridor (SJU → JFK) covers roughly 1,598 miles and is served by 6 carriers, based on Bureau of Transportation Statistics reporting. Across 19,165 flights in the dataset, this route posts a 77.9% on-time rate with an average delay of 87.7 minutes when flights run late. Over the most recent 24 months of BTS data, 7,718 flights were recorded on this pairing — 88 cancelled (1.1%) and 14 diverted (0.2%). Those baseline metrics tell you what to expect before you book.

Having 6 carriers on the route matters: more carriers generally means more daily schedule options, competitive pricing, and redundancy when flights are cancelled. With 19,165 total flights analyzed, the 77.9% on-time figure is statistically meaningful rather than a small-sample fluke. The 87.7-minute average delay applies only to flights that actually ran late, so it is not the average wait across all departures — the majority of flights on this route depart on time under the BTS definition of a delay (15+ minutes past schedule).

Looking at recent months, Oct 2024 posted the best performance on this corridor at 90% on-time, while Jul 2025 came in at 73% on-time — a 17-point gap between best and worst recent month. For travelers evaluating the SJU to JFK route, the combination of a 77.9% on-time rate, 87.7-minute average delay, 1.1% recent cancellation rate, and 6 available carriers is the concrete summary of what BTS data shows about reliability on this pairing.