DL1780
Delta Air Lines flight 1780 — Boston (BOS) to San Juan (SJU)
On time
83%
Avg delay
~61 min
Cancelled
0.5%
DL1780 is a reliable flight. About 83% of departures arrive on time. When delays happen, the most common cause is airline operations.
Monthly breakdown
| Month | On time | Cancelled | Avg delay |
|---|---|---|---|
| 2026-07 | 81% | 0.0% | 42 min |
| 2026-07 | 87% | 0.0% | 39 min |
| 2026-06 | 83% | 0.0% | 51 min |
| 2026-06 | 83% | 0.0% | 59 min |
| 2026-05 | 87% | 0.0% | 37 min |
| 2026-05 | 84% | 0.0% | 32 min |
| 2026-04 | 77% | 0.0% | 34 min |
| 2026-04 | 73% | 0.0% | 26 min |
| 2026-03 | 77% | 0.0% | 30 min |
| 2026-03 | 74% | 0.0% | 56 min |
| 2026-02 | 67% | 3.6% | 86 min |
| 2026-02 | 74% | 3.6% | 97 min |
Top delay cause
airline operations
Based on 2,531 tracked departures
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Get a free briefingData last updated October 2026. Source: Bureau of Transportation Statistics.