Flight OddsSJU → BOS Delta Air Lines
Delta Air Lines · San Juan, PR to Boston, MA · 398 flights, 2025-07-01 to 2026-06-30 · aggregated across 6 flight numbers
On-time arrival
79%
Median delay
-9 min
90th percentile
+39 min
Cancellation rate
2%
How on-time is Delta Air Lines from SJU to BOS?
Across every Delta Air Lines flight number on SJU → BOS (398 flights, 2025-07-01 to 2026-06-30), 79% arrived within 15 minutes of schedule. Median arrival delay -9 min; the worst 10% ran +39 min or later. 2% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 309 | 79% |
| 16-30 min | 32 | 8% |
| 31-60 min | 26 | 7% |
| 61-120 min | 12 | 3% |
| 2+ hrs | 10 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 31 | 100% | -14 min |
| 2025-08 | 29 | 86% | -8 min |
| 2025-09 | 30 | 77% | +5 min |
| 2025-10 | 31 | 77% | +1 min |
| 2025-11 | 30 | 87% | -9 min |
| 2025-12 | 42 | 79% | -2 min |
| 2026-01 | 36 | 67% | +43 min |
| 2026-02 | 31 | 77% | +15 min |
| 2026-03 | 35 | 74% | +12 min |
| 2026-04 | 34 | 68% | +10 min |
| 2026-05 | 31 | 84% | -2 min |
| 2026-06 | 29 | 83% | +1 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 53 | 83% |
| Tue | 54 | 83% |
| Wed | 54 | 72% |
| Thu | 53 | 77% |
| Fri | 53 | 83% |
| Sat | 69 | 81% |
| Sun | 53 | 75% |
DL flight numbers on SJU → BOS
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…