DL866
Delta Air Lines flight 866 — Detroit (DTW) to Miami (MIA)
On time
75%
Avg delay
~69 min
Cancelled
1.3%
DL866 is fairly reliable, though delays happen. About 75% 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 | 70% | 3.2% | 87 min |
| 2026-07 | 63% | 3.2% | 152 min |
| 2026-06 | 80% | 0.0% | 88 min |
| 2026-06 | 67% | 0.0% | 129 min |
| 2026-05 | 77% | 0.0% | 42 min |
| 2026-05 | 65% | 0.0% | 44 min |
| 2026-04 | 80% | 0.0% | 47 min |
| 2026-04 | 77% | 0.0% | 76 min |
| 2026-03 | 70% | 3.2% | 39 min |
| 2026-03 | 52% | 4.2% | 61 min |
| 2026-02 | 96% | 0.0% | 102 min |
| 2026-01 | 53% | 3.2% | 53 min |
Top delay cause
airline operations
Based on 1,904 tracked departures
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Get a free briefingData last updated October 2026. Source: Bureau of Transportation Statistics.