San Juan to Newark

What the Data Says About SJU to EWR

The San Juan to Newark corridor (SJU → EWR) covers roughly 1,608 miles and is served by 21 carriers, based on Bureau of Transportation Statistics reporting. Across 13,009 flights in the dataset, this route posts a 72.6% on-time rate with an average delay of 81.5 minutes when flights run late. Over the most recent 24 months of BTS data, 4,495 flights were recorded on this pairing — 81 cancelled (1.8%) and 25 diverted (0.6%). Those baseline metrics tell you what to expect before you book.

Having 21 carriers on the route matters: more carriers generally means more daily schedule options, competitive pricing, and redundancy when flights are cancelled. With 13,009 total flights analyzed, the 72.6% on-time figure is statistically meaningful rather than a small-sample fluke. The 81.5-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, Sep 2024 posted the best performance on this corridor at 83% on-time, while Jul 2025 came in at 64% on-time — a 19-point gap between best and worst recent month. For travelers evaluating the SJU to EWR route, the combination of a 72.6% on-time rate, 81.5-minute average delay, 1.8% recent cancellation rate, and 21 available carriers is the concrete summary of what BTS data shows about reliability on this pairing.