Flight OddsDL1171 DTW → BOS
Delta Air Lines · Detroit, MI to Boston, MA · 360 flights observed, 2025-07-01 to 2026-06-30 · 632 mi
On-time arrival
70%
Median delay
0 min
90th percentile
+70 min
Cancellation rate
1%
How often is DL1171 on time?
Across 360 flights on DTW → BOS from 2025-07-01 to 2026-06-30, DL1171 arrived within 15 minutes of schedule 70% of the time. The median arrival delay was 0 min, and the worst 10% of flights arrived +70 min or later. 1% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 251 | 70% |
| 16-30 min | 27 | 8% |
| 31-60 min | 34 | 10% |
| 61-120 min | 25 | 7% |
| 2+ hrs | 20 | 6% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 31 | 58% | +35 min |
| 2025-08 | 31 | 77% | +4 min |
| 2025-09 | 30 | 47% | +44 min |
| 2025-10 | 31 | 52% | +40 min |
| 2025-11 | 29 | 79% | +5 min |
| 2025-12 | 27 | 74% | +3 min |
| 2026-01 | 29 | 69% | +26 min |
| 2026-02 | 27 | 78% | +9 min |
| 2026-03 | 31 | 87% | +3 min |
| 2026-04 | 30 | 57% | +25 min |
| 2026-05 | 31 | 84% | +2 min |
| 2026-06 | 30 | 83% | +2 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 51 | 69% |
| Tue | 53 | 75% |
| Wed | 50 | 68% |
| Thu | 49 | 69% |
| Fri | 51 | 75% |
| Sat | 52 | 77% |
| Sun | 51 | 59% |
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…