63% of STT → SJU flights arrived on time in June-August 2026 (128 flights). The most reliable was B6 435, on time 68% of the time on this route. STT (STT): no delay reported. SJU (SJU): no delay reported.
Best time of day to fly STT → SJU
| Afternoon (noon-5 PM) |
Flights STT → SJU, most reliable first
| Flight | Departs | On time on this route | Cancelled |
|---|---|---|---|
| B6 435 JetBlue | 3:45 PM | 0% | |
| B6 808 JetBlue | 2:00 PM | 5.6% |
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From BTS on-time data, June-August 2026; flights with 20+ trips on this route. On-time rates cover each flight number's whole day, which can include other legs. Departure times are local.