Flight OddsMIA → BOS Delta Air Lines
Delta Air Lines · Miami, FL to Boston, MA · 888 flights, 2025-07-01 to 2026-06-30 · aggregated across 16 flight numbers
On-time arrival
71%
Median delay
-3 min
90th percentile
+67 min
Cancellation rate
3%
How on-time is Delta Air Lines from MIA to BOS?
Across every Delta Air Lines flight number on MIA → BOS (888 flights, 2025-07-01 to 2026-06-30), 71% arrived within 15 minutes of schedule. Median arrival delay -3 min; the worst 10% ran +67 min or later. 3% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 614 | 71% |
| 16-30 min | 66 | 8% |
| 31-60 min | 79 | 9% |
| 61-120 min | 57 | 7% |
| 2+ hrs | 44 | 5% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 57 | 53% | +30 min |
| 2025-08 | 60 | 78% | +1 min |
| 2025-09 | 58 | 71% | +13 min |
| 2025-10 | 61 | 44% | +41 min |
| 2025-11 | 80 | 74% | +10 min |
| 2025-12 | 84 | 69% | +33 min |
| 2026-01 | 72 | 76% | +14 min |
| 2026-02 | 77 | 77% | +4 min |
| 2026-03 | 92 | 73% | +15 min |
| 2026-04 | 90 | 77% | +20 min |
| 2026-05 | 67 | 82% | +3 min |
| 2026-06 | 62 | 76% | +4 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 118 | 68% |
| Tue | 125 | 80% |
| Wed | 125 | 78% |
| Thu | 124 | 69% |
| Fri | 123 | 69% |
| Sat | 123 | 71% |
| Sun | 122 | 65% |
DL flight numbers on MIA → BOS
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…