Flight OddsDL1864 BOS → SJU
Delta Air Lines · Boston, MA to San Juan, PR · 14 flights observed, 2026-01-10 to 2026-04-11 · 1,674 mi
DL1864 covers more than one route in the data window — the stats below are for BOS → SJU, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
50%
Median delay
+15 min
90th percentile
+119 min
Cancellation rate
0%
How often is DL1864 on time?
Across 14 flights on BOS → SJU from 2026-01-10 to 2026-04-11, DL1864 arrived within 15 minutes of schedule 50% of the time. The median arrival delay was +15 min, and the worst 10% of flights arrived +119 min or later. 0% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 7 | 50% |
| 16-30 min | 3 | 21% |
| 31-60 min | 2 | 14% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 2 | 14% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-01 | 4 | 100% | -10 min |
| 2026-02 | 4 | 25% | +12 min |
| 2026-03 | 4 | 50% | +20 min |
| 2026-04 | 2 | 0% | +187 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | No data | — |
| Tue | No data | — |
| Wed | No data | — |
| Thu | No data | — |
| Fri | No data | — |
| Sat | 14 | 50% |
| Sun | No data | — |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…