San Juan to Fort Lauderdale

What the Data Says About SJU to FLL

The San Juan to Fort Lauderdale corridor (SJU → FLL) covers roughly 1,046 miles and is served by 14 carriers, based on Bureau of Transportation Statistics reporting. Across 14,615 flights in the dataset, this route posts a 77.9% on-time rate with an average delay of 78.9 minutes when flights run late. Over the most recent 24 months of BTS data, 4,743 flights were recorded on this pairing — 37 cancelled (0.8%) and 10 diverted (0.2%). Those baseline metrics tell you what to expect before you book.

Having 14 carriers on the route matters: more carriers generally means more daily schedule options, competitive pricing, and redundancy when flights are cancelled. With 14,615 total flights analyzed, the 77.9% on-time figure is statistically meaningful rather than a small-sample fluke. The 78.9-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, May 2025 posted the best performance on this corridor at 88% on-time, while Aug 2024 came in at 65% on-time — a 22-point gap between best and worst recent month. For travelers evaluating the SJU to FLL route, the combination of a 77.9% on-time rate, 78.9-minute average delay, 0.8% recent cancellation rate, and 14 available carriers is the concrete summary of what BTS data shows about reliability on this pairing.