Delta Air Lines · Saginaw/Bay City/Midland, MI to Detroit, MI · 190 flights observed, 2025-07-01 to 2026-06-30 · 98 mi
DL3964 covers more than one route in the data window — the stats below are for MBS → DTW, the one it has flown most recently. The others are linked under “Other routes”.
How often is DL3964 on time?
Across 190 flights on MBS → DTW from 2025-07-01 to 2026-06-30, DL3964 arrived within 15 minutes of schedule 72% of the time. The median arrival delay was -4 min, and the worst 10% of flights arrived +98 min or later. 2% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 134 | 72% |
| 16-30 min | 14 | 7% |
| 31-60 min | 14 | 7% |
| 61-120 min | 9 | 5% |
| 2+ hrs | 16 | 9% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 30 | 73% | +16 min |
| 2025-08 | 31 | 68% | +18 min |
| 2025-09 | 30 | 87% | +2 min |
| 2025-10 | 27 | 70% | +24 min |
| 2025-11 | 23 | 57% | +57 min |
| 2025-12 | 1 | 0% | +25 min |
| 2026-02 | 16 | 75% | +20 min |
| 2026-03 | 7 | 71% | +15 min |
| 2026-06 | 22 | 73% | +7 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 28 | 68% |
| Tue | 28 | 57% |
| Wed | 28 | 75% |
| Thu | 28 | 68% |
| Fri | 26 | 88% |
| Sat | 20 | 75% |
| Sun | 29 | 72% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…