San Juan to Atlanta

What the Data Says About SJU to ATL

The San Juan to Atlanta corridor (SJU → ATL) covers roughly 1,547 miles and is served by 9 carriers, based on Bureau of Transportation Statistics reporting. Across 9,651 flights in the dataset, this route posts a 84.3% on-time rate with an average delay of 83.7 minutes when flights run late. Over the most recent 24 months of BTS data, 4,249 flights were recorded on this pairing — 36 cancelled (0.8%) and 27 diverted (0.6%). Those baseline metrics tell you what to expect before you book.

Having 9 carriers on the route matters: more carriers generally means more daily schedule options, competitive pricing, and redundancy when flights are cancelled. With 9,651 total flights analyzed, the 84.3% on-time figure is statistically meaningful rather than a small-sample fluke. The 83.7-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 May 2024 came in at 66% on-time — a 24-point gap between best and worst recent month. For travelers evaluating the SJU to ATL route, the combination of a 84.3% on-time rate, 83.7-minute average delay, 0.8% recent cancellation rate, and 9 available carriers is the concrete summary of what BTS data shows about reliability on this pairing.