Flight OddsDL1859 JFK → SJU
Delta Air Lines · New York, NY to San Juan, PR · 359 flights observed, 2025-07-01 to 2026-06-30 · 1,598 mi
On-time arrival
69%
Median delay
-1 min
90th percentile
+58 min
Cancellation rate
2%
How often is DL1859 on time?
Across 359 flights on JFK → SJU from 2025-07-01 to 2026-06-30, DL1859 arrived within 15 minutes of schedule 69% of the time. The median arrival delay was -1 min, and the worst 10% of flights arrived +58 min or later. 2% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 244 | 69% |
| 16-30 min | 39 | 11% |
| 31-60 min | 37 | 11% |
| 61-120 min | 22 | 6% |
| 2+ hrs | 10 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 31 | 65% | +24 min |
| 2025-08 | 29 | 79% | -4 min |
| 2025-09 | 30 | 60% | +16 min |
| 2025-10 | 31 | 61% | +24 min |
| 2025-11 | 30 | 70% | +7 min |
| 2025-12 | 30 | 63% | +20 min |
| 2026-01 | 27 | 59% | +24 min |
| 2026-02 | 22 | 64% | +12 min |
| 2026-03 | 31 | 84% | -3 min |
| 2026-04 | 30 | 87% | -12 min |
| 2026-05 | 31 | 71% | +2 min |
| 2026-06 | 30 | 67% | +9 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 50 | 68% |
| Tue | 50 | 76% |
| Wed | 49 | 73% |
| Thu | 52 | 54% |
| Fri | 51 | 80% |
| Sat | 50 | 72% |
| Sun | 50 | 62% |
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…